diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index ef8b72e..a7fdec2 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -58,4 +58,6 @@ Report security vulnerabilities privately to the maintainers rather than in a pu
 
 ## License
 
-By contributing you agree that your contributions are licensed under the [PolyForm Noncommercial License 1.0.0](LICENSE).
+By contributing you agree that your contributions are licensed under the [PolyForm Noncommercial License 1.0.0](LICENSE),
+and that Metacog Labs may also license them to others under its commercial license terms. New source files start
+with the same two SPDX lines as the existing ones.
diff --git a/Dockerfile b/Dockerfile
index 67942de..8cf48ef 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,6 @@
 # syntax=docker/dockerfile:1.7
+# SPDX-FileCopyrightText: Metacog Labs
+# SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
 
 FROM ghcr.io/graalvm/native-image-community:25 AS build
 WORKDIR /src
@@ -16,6 +18,10 @@ RUN --mount=type=cache,target=/root/.m2 \
  && cp server/target/hstore /hstore
 
 FROM debian:bookworm-slim
+LABEL org.opencontainers.image.title="HStore" \
+      org.opencontainers.image.vendor="Metacog Labs" \
+      org.opencontainers.image.licenses="PolyForm-Noncommercial-1.0.0" \
+      org.opencontainers.image.source="https://github.com/metacoglabs/hypergraph"
 ARG UID=999
 ARG GID=999
 RUN groupadd --system --gid ${GID} hstore \
diff --git a/README.md b/README.md
index 649ef14..8bd6168 100644
--- a/README.md
+++ b/README.md
@@ -182,5 +182,9 @@ See [CONTRIBUTING.md](CONTRIBUTING.md).
 ## License
 
 HStore is source-available under the [PolyForm Noncommercial License 1.0.0](LICENSE)
-(SPDX: `PolyForm-Noncommercial-1.0.0`). You may use, modify and share it for any noncommercial purpose.
-Commercial use is not covered by this license; contact the maintainers if you need it.
+(SPDX: `PolyForm-Noncommercial-1.0.0`). You may use, modify and share it for any noncommercial purpose as that
+license defines it.
+
+**Commercial use needs a separate commercial license from Metacog Labs.** Anything the noncommercial license
+doesn't cover can be licensed commercially: write to krish@getmetacognition.com. The server prints this notice at
+startup and in `hstore version`.
diff --git a/benchmarks/install-hypergraphdb.sh b/benchmarks/install-hypergraphdb.sh
index facfe10..59d093b 100755
--- a/benchmarks/install-hypergraphdb.sh
+++ b/benchmarks/install-hypergraphdb.sh
@@ -1,4 +1,6 @@
 #!/usr/bin/env bash
+# SPDX-FileCopyrightText: Metacog Labs
+# SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
 set -Eeuo pipefail
 
 commit=99485a1fa52e532351e8418b4f8153d97c72c959
diff --git a/benchmarks/run.sh b/benchmarks/run.sh
index b5e0a39..9ea009f 100755
--- a/benchmarks/run.sh
+++ b/benchmarks/run.sh
@@ -1,4 +1,6 @@
 #!/usr/bin/env bash
+# SPDX-FileCopyrightText: Metacog Labs
+# SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
 set -Eeuo pipefail
 
 cd "$(dirname "$0")"
diff --git a/benchmarks/src/main/java/io/hstore/bench/Comparison.java b/benchmarks/src/main/java/io/hstore/bench/Comparison.java
index 07593ad..df6ee2c 100644
--- a/benchmarks/src/main/java/io/hstore/bench/Comparison.java
+++ b/benchmarks/src/main/java/io/hstore/bench/Comparison.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.bench;
 
 import io.hstore.db.value.Json;
diff --git a/benchmarks/src/main/java/io/hstore/bench/Dataset.java b/benchmarks/src/main/java/io/hstore/bench/Dataset.java
index 41b632a..ad157f0 100644
--- a/benchmarks/src/main/java/io/hstore/bench/Dataset.java
+++ b/benchmarks/src/main/java/io/hstore/bench/Dataset.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.bench;
 
 import java.util.Arrays;
diff --git a/benchmarks/src/main/java/io/hstore/bench/HStoreStore.java b/benchmarks/src/main/java/io/hstore/bench/HStoreStore.java
index 66c70f5..d45dd25 100644
--- a/benchmarks/src/main/java/io/hstore/bench/HStoreStore.java
+++ b/benchmarks/src/main/java/io/hstore/bench/HStoreStore.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.bench;
 
 import io.hstore.db.DatabaseOptions;
diff --git a/benchmarks/src/main/java/io/hstore/bench/HyperGraphDbStore.java b/benchmarks/src/main/java/io/hstore/bench/HyperGraphDbStore.java
index 5d48958..8e019f8 100644
--- a/benchmarks/src/main/java/io/hstore/bench/HyperGraphDbStore.java
+++ b/benchmarks/src/main/java/io/hstore/bench/HyperGraphDbStore.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.bench;
 
 import com.sleepycat.je.Durability;
diff --git a/benchmarks/src/main/java/io/hstore/bench/JvmUsage.java b/benchmarks/src/main/java/io/hstore/bench/JvmUsage.java
index 14f1897..3a64faf 100644
--- a/benchmarks/src/main/java/io/hstore/bench/JvmUsage.java
+++ b/benchmarks/src/main/java/io/hstore/bench/JvmUsage.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.bench;
 
 import java.lang.management.GarbageCollectorMXBean;
diff --git a/benchmarks/src/main/java/io/hstore/bench/Latency.java b/benchmarks/src/main/java/io/hstore/bench/Latency.java
index e4ee7ff..3f95d44 100644
--- a/benchmarks/src/main/java/io/hstore/bench/Latency.java
+++ b/benchmarks/src/main/java/io/hstore/bench/Latency.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.bench;
 
 import io.hstore.db.value.Json;
diff --git a/benchmarks/src/main/java/io/hstore/bench/Report.java b/benchmarks/src/main/java/io/hstore/bench/Report.java
index a81eaab..8300d25 100644
--- a/benchmarks/src/main/java/io/hstore/bench/Report.java
+++ b/benchmarks/src/main/java/io/hstore/bench/Report.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.bench;
 
 import io.hstore.db.value.Json;
diff --git a/benchmarks/src/main/java/io/hstore/bench/Reservoir.java b/benchmarks/src/main/java/io/hstore/bench/Reservoir.java
index 1566071..97b37b5 100644
--- a/benchmarks/src/main/java/io/hstore/bench/Reservoir.java
+++ b/benchmarks/src/main/java/io/hstore/bench/Reservoir.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.bench;
 
 import java.util.Arrays;
diff --git a/benchmarks/src/main/java/io/hstore/bench/Store.java b/benchmarks/src/main/java/io/hstore/bench/Store.java
index 8287e8d..89347b5 100644
--- a/benchmarks/src/main/java/io/hstore/bench/Store.java
+++ b/benchmarks/src/main/java/io/hstore/bench/Store.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.bench;
 
 import java.io.IOException;
diff --git a/database/src/main/java/io/hstore/db/Atom.java b/database/src/main/java/io/hstore/db/Atom.java
index 364d38e..107fa9a 100644
--- a/database/src/main/java/io/hstore/db/Atom.java
+++ b/database/src/main/java/io/hstore/db/Atom.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db;
 
 import io.hstore.db.schema.TypeDef;
diff --git a/database/src/main/java/io/hstore/db/DatabaseOptions.java b/database/src/main/java/io/hstore/db/DatabaseOptions.java
index 8c8546c..8ae539f 100644
--- a/database/src/main/java/io/hstore/db/DatabaseOptions.java
+++ b/database/src/main/java/io/hstore/db/DatabaseOptions.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db;
 
 import io.hstore.db.semantic.Encoder;
diff --git a/database/src/main/java/io/hstore/db/HypergraphDatabase.java b/database/src/main/java/io/hstore/db/HypergraphDatabase.java
index a652da1..51898cb 100644
--- a/database/src/main/java/io/hstore/db/HypergraphDatabase.java
+++ b/database/src/main/java/io/hstore/db/HypergraphDatabase.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db;
 
 import io.hstore.db.evidence.Provenance;
diff --git a/database/src/main/java/io/hstore/db/Incident.java b/database/src/main/java/io/hstore/db/Incident.java
index 1968ffa..4a4f1e6 100644
--- a/database/src/main/java/io/hstore/db/Incident.java
+++ b/database/src/main/java/io/hstore/db/Incident.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db;
 
 import java.util.List;
diff --git a/database/src/main/java/io/hstore/db/Member.java b/database/src/main/java/io/hstore/db/Member.java
index 16e1e2a..9678419 100644
--- a/database/src/main/java/io/hstore/db/Member.java
+++ b/database/src/main/java/io/hstore/db/Member.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db;
 
 import io.hstore.engine.topology.Validity;
diff --git a/database/src/main/java/io/hstore/db/MemberSpec.java b/database/src/main/java/io/hstore/db/MemberSpec.java
index 1deca9b..860ada1 100644
--- a/database/src/main/java/io/hstore/db/MemberSpec.java
+++ b/database/src/main/java/io/hstore/db/MemberSpec.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db;
 
 import io.hstore.engine.topology.Validity;
diff --git a/database/src/main/java/io/hstore/db/Reader.java b/database/src/main/java/io/hstore/db/Reader.java
index e63c63a..caaa43b 100644
--- a/database/src/main/java/io/hstore/db/Reader.java
+++ b/database/src/main/java/io/hstore/db/Reader.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db;
 
 import io.hstore.db.property.PropertyBag.Property;
diff --git a/database/src/main/java/io/hstore/db/Writer.java b/database/src/main/java/io/hstore/db/Writer.java
index d8b078b..f6325a3 100644
--- a/database/src/main/java/io/hstore/db/Writer.java
+++ b/database/src/main/java/io/hstore/db/Writer.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db;
 
 import io.hstore.db.property.PropertyBag.Property;
diff --git a/database/src/main/java/io/hstore/db/evidence/AssertionType.java b/database/src/main/java/io/hstore/db/evidence/AssertionType.java
index a6133f5..c9db8d2 100644
--- a/database/src/main/java/io/hstore/db/evidence/AssertionType.java
+++ b/database/src/main/java/io/hstore/db/evidence/AssertionType.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.evidence;
 
 public enum AssertionType {
diff --git a/database/src/main/java/io/hstore/db/evidence/Evidence.java b/database/src/main/java/io/hstore/db/evidence/Evidence.java
index 909bae7..130e79b 100644
--- a/database/src/main/java/io/hstore/db/evidence/Evidence.java
+++ b/database/src/main/java/io/hstore/db/evidence/Evidence.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.evidence;
 
 import io.hstore.engine.page.ByteCursor;
diff --git a/database/src/main/java/io/hstore/db/evidence/EvidencePolicy.java b/database/src/main/java/io/hstore/db/evidence/EvidencePolicy.java
index f4aa778..a79116d 100644
--- a/database/src/main/java/io/hstore/db/evidence/EvidencePolicy.java
+++ b/database/src/main/java/io/hstore/db/evidence/EvidencePolicy.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.evidence;
 
 import java.util.EnumSet;
diff --git a/database/src/main/java/io/hstore/db/evidence/Provenance.java b/database/src/main/java/io/hstore/db/evidence/Provenance.java
index 624bcc3..2d6d3bd 100644
--- a/database/src/main/java/io/hstore/db/evidence/Provenance.java
+++ b/database/src/main/java/io/hstore/db/evidence/Provenance.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.evidence;
 
 import io.hstore.db.Member;
diff --git a/database/src/main/java/io/hstore/db/evidence/Qualifier.java b/database/src/main/java/io/hstore/db/evidence/Qualifier.java
index c57108b..12300d7 100644
--- a/database/src/main/java/io/hstore/db/evidence/Qualifier.java
+++ b/database/src/main/java/io/hstore/db/evidence/Qualifier.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.evidence;
 
 import io.hstore.engine.page.ByteCursor;
diff --git a/database/src/main/java/io/hstore/db/hora/Budget.java b/database/src/main/java/io/hstore/db/hora/Budget.java
index 965b3c2..2295378 100644
--- a/database/src/main/java/io/hstore/db/hora/Budget.java
+++ b/database/src/main/java/io/hstore/db/hora/Budget.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.hora;
 
 import io.hstore.engine.HStoreException;
diff --git a/database/src/main/java/io/hstore/db/hora/Field.java b/database/src/main/java/io/hstore/db/hora/Field.java
index 8fdf2cd..f8199b9 100644
--- a/database/src/main/java/io/hstore/db/hora/Field.java
+++ b/database/src/main/java/io/hstore/db/hora/Field.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.hora;
 
 public sealed interface Field {
diff --git a/database/src/main/java/io/hstore/db/hora/Gathered.java b/database/src/main/java/io/hstore/db/hora/Gathered.java
index f08d7d4..e8094de 100644
--- a/database/src/main/java/io/hstore/db/hora/Gathered.java
+++ b/database/src/main/java/io/hstore/db/hora/Gathered.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.hora;
 
 import io.hstore.db.value.Value;
diff --git a/database/src/main/java/io/hstore/db/hora/GroupKernel.java b/database/src/main/java/io/hstore/db/hora/GroupKernel.java
index 3ba8adf..7cff81f 100644
--- a/database/src/main/java/io/hstore/db/hora/GroupKernel.java
+++ b/database/src/main/java/io/hstore/db/hora/GroupKernel.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.hora;
 
 import java.util.List;
diff --git a/database/src/main/java/io/hstore/db/hora/Hora.java b/database/src/main/java/io/hstore/db/hora/Hora.java
index 71ca247..a410902 100644
--- a/database/src/main/java/io/hstore/db/hora/Hora.java
+++ b/database/src/main/java/io/hstore/db/hora/Hora.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.hora;
 
 import io.hstore.db.Member;
diff --git a/database/src/main/java/io/hstore/db/hora/Pattern.java b/database/src/main/java/io/hstore/db/hora/Pattern.java
index 7ac7d1c..ab0c385 100644
--- a/database/src/main/java/io/hstore/db/hora/Pattern.java
+++ b/database/src/main/java/io/hstore/db/hora/Pattern.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.hora;
 
 import java.util.List;
diff --git a/database/src/main/java/io/hstore/db/hora/PatternMatcher.java b/database/src/main/java/io/hstore/db/hora/PatternMatcher.java
index a6d312a..ec98642 100644
--- a/database/src/main/java/io/hstore/db/hora/PatternMatcher.java
+++ b/database/src/main/java/io/hstore/db/hora/PatternMatcher.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.hora;
 
 import io.hstore.db.Atom;
diff --git a/database/src/main/java/io/hstore/db/hora/Reducer.java b/database/src/main/java/io/hstore/db/hora/Reducer.java
index d2fa3a2..eb8dd68 100644
--- a/database/src/main/java/io/hstore/db/hora/Reducer.java
+++ b/database/src/main/java/io/hstore/db/hora/Reducer.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.hora;
 
 import java.util.OptionalDouble;
diff --git a/database/src/main/java/io/hstore/db/hora/SwapSampler.java b/database/src/main/java/io/hstore/db/hora/SwapSampler.java
index fff78f3..15cd8b3 100644
--- a/database/src/main/java/io/hstore/db/hora/SwapSampler.java
+++ b/database/src/main/java/io/hstore/db/hora/SwapSampler.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.hora;
 
 import io.hstore.db.HypergraphDatabase;
diff --git a/database/src/main/java/io/hstore/db/payload/PayloadStore.java b/database/src/main/java/io/hstore/db/payload/PayloadStore.java
index 3677956..8f7e3f0 100644
--- a/database/src/main/java/io/hstore/db/payload/PayloadStore.java
+++ b/database/src/main/java/io/hstore/db/payload/PayloadStore.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.payload;
 
 import io.hstore.engine.HStoreException;
diff --git a/database/src/main/java/io/hstore/db/property/PropertyBag.java b/database/src/main/java/io/hstore/db/property/PropertyBag.java
index 7fa3f3d..a967147 100644
--- a/database/src/main/java/io/hstore/db/property/PropertyBag.java
+++ b/database/src/main/java/io/hstore/db/property/PropertyBag.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.property;
 
 import io.hstore.db.value.Value;
diff --git a/database/src/main/java/io/hstore/db/property/PropertyIndex.java b/database/src/main/java/io/hstore/db/property/PropertyIndex.java
index acce75a..3197123 100644
--- a/database/src/main/java/io/hstore/db/property/PropertyIndex.java
+++ b/database/src/main/java/io/hstore/db/property/PropertyIndex.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.property;
 
 import io.hstore.db.property.PropertySlots.IndexRoot;
diff --git a/database/src/main/java/io/hstore/db/property/PropertyIndexing.java b/database/src/main/java/io/hstore/db/property/PropertyIndexing.java
index b67ee2d..1c8d4d7 100644
--- a/database/src/main/java/io/hstore/db/property/PropertyIndexing.java
+++ b/database/src/main/java/io/hstore/db/property/PropertyIndexing.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.property;
 
 import io.hstore.db.payload.PayloadStore;
diff --git a/database/src/main/java/io/hstore/db/property/PropertySlots.java b/database/src/main/java/io/hstore/db/property/PropertySlots.java
index 8759a31..2dfaf35 100644
--- a/database/src/main/java/io/hstore/db/property/PropertySlots.java
+++ b/database/src/main/java/io/hstore/db/property/PropertySlots.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.property;
 
 import io.hstore.db.value.TypeTag;
diff --git a/database/src/main/java/io/hstore/db/query/AccessPath.java b/database/src/main/java/io/hstore/db/query/AccessPath.java
index bea1ef2..c664c35 100644
--- a/database/src/main/java/io/hstore/db/query/AccessPath.java
+++ b/database/src/main/java/io/hstore/db/query/AccessPath.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.query;
 
 import io.hstore.db.Atom;
diff --git a/database/src/main/java/io/hstore/db/query/Ast.java b/database/src/main/java/io/hstore/db/query/Ast.java
index 01ed1c3..4324c51 100644
--- a/database/src/main/java/io/hstore/db/query/Ast.java
+++ b/database/src/main/java/io/hstore/db/query/Ast.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.query;
 
 import io.hstore.db.evidence.AssertionType;
diff --git a/database/src/main/java/io/hstore/db/query/Evaluator.java b/database/src/main/java/io/hstore/db/query/Evaluator.java
index 4962c36..9770352 100644
--- a/database/src/main/java/io/hstore/db/query/Evaluator.java
+++ b/database/src/main/java/io/hstore/db/query/Evaluator.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.query;
 
 import io.hstore.db.Atom;
diff --git a/database/src/main/java/io/hstore/db/query/Executor.java b/database/src/main/java/io/hstore/db/query/Executor.java
index f98ae89..a5837f5 100644
--- a/database/src/main/java/io/hstore/db/query/Executor.java
+++ b/database/src/main/java/io/hstore/db/query/Executor.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.query;
 
 import io.hstore.db.Atom;
diff --git a/database/src/main/java/io/hstore/db/query/Lexer.java b/database/src/main/java/io/hstore/db/query/Lexer.java
index 3ff0ca0..04166e3 100644
--- a/database/src/main/java/io/hstore/db/query/Lexer.java
+++ b/database/src/main/java/io/hstore/db/query/Lexer.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.query;
 
 import io.hstore.engine.HStoreException;
diff --git a/database/src/main/java/io/hstore/db/query/Parser.java b/database/src/main/java/io/hstore/db/query/Parser.java
index 0530cdb..f0abef3 100644
--- a/database/src/main/java/io/hstore/db/query/Parser.java
+++ b/database/src/main/java/io/hstore/db/query/Parser.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.query;
 
 import io.hstore.db.evidence.AssertionType;
diff --git a/database/src/main/java/io/hstore/db/query/Planner.java b/database/src/main/java/io/hstore/db/query/Planner.java
index 8c256e3..9e5c37f 100644
--- a/database/src/main/java/io/hstore/db/query/Planner.java
+++ b/database/src/main/java/io/hstore/db/query/Planner.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.query;
 
 import io.hstore.db.Reader;
diff --git a/database/src/main/java/io/hstore/db/query/QueryResult.java b/database/src/main/java/io/hstore/db/query/QueryResult.java
index 0492f2c..0b94765 100644
--- a/database/src/main/java/io/hstore/db/query/QueryResult.java
+++ b/database/src/main/java/io/hstore/db/query/QueryResult.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.query;
 
 import io.hstore.db.value.Json;
diff --git a/database/src/main/java/io/hstore/db/query/Session.java b/database/src/main/java/io/hstore/db/query/Session.java
index d61a040..44213e8 100644
--- a/database/src/main/java/io/hstore/db/query/Session.java
+++ b/database/src/main/java/io/hstore/db/query/Session.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.query;
 
 import io.hstore.db.HypergraphDatabase;
diff --git a/database/src/main/java/io/hstore/db/query/Token.java b/database/src/main/java/io/hstore/db/query/Token.java
index 9c0a769..2a12ede 100644
--- a/database/src/main/java/io/hstore/db/query/Token.java
+++ b/database/src/main/java/io/hstore/db/query/Token.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.query;
 
 public record Token(Kind kind, String text, int position) {
diff --git a/database/src/main/java/io/hstore/db/schema/AtomKind.java b/database/src/main/java/io/hstore/db/schema/AtomKind.java
index 3010338..f38070d 100644
--- a/database/src/main/java/io/hstore/db/schema/AtomKind.java
+++ b/database/src/main/java/io/hstore/db/schema/AtomKind.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.schema;
 
 import io.hstore.engine.topology.EdgeKind;
diff --git a/database/src/main/java/io/hstore/db/schema/Schema.java b/database/src/main/java/io/hstore/db/schema/Schema.java
index 9cce5c9..e4a5dcd 100644
--- a/database/src/main/java/io/hstore/db/schema/Schema.java
+++ b/database/src/main/java/io/hstore/db/schema/Schema.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.schema;
 
 import io.hstore.db.schema.SchemaSlots.TypeName;
diff --git a/database/src/main/java/io/hstore/db/schema/SchemaSlots.java b/database/src/main/java/io/hstore/db/schema/SchemaSlots.java
index f0a26d7..953e46f 100644
--- a/database/src/main/java/io/hstore/db/schema/SchemaSlots.java
+++ b/database/src/main/java/io/hstore/db/schema/SchemaSlots.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.schema;
 
 import io.hstore.engine.catalog.Slot;
diff --git a/database/src/main/java/io/hstore/db/schema/TypeDef.java b/database/src/main/java/io/hstore/db/schema/TypeDef.java
index fca1042..cdbac9f 100644
--- a/database/src/main/java/io/hstore/db/schema/TypeDef.java
+++ b/database/src/main/java/io/hstore/db/schema/TypeDef.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.schema;
 
 import io.hstore.db.value.TypeTag;
diff --git a/database/src/main/java/io/hstore/db/security/Principal.java b/database/src/main/java/io/hstore/db/security/Principal.java
index c929a23..631b2ac 100644
--- a/database/src/main/java/io/hstore/db/security/Principal.java
+++ b/database/src/main/java/io/hstore/db/security/Principal.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.security;
 
 import io.hstore.engine.HStoreException;
diff --git a/database/src/main/java/io/hstore/db/security/Quota.java b/database/src/main/java/io/hstore/db/security/Quota.java
index 5cc512f..c357cd1 100644
--- a/database/src/main/java/io/hstore/db/security/Quota.java
+++ b/database/src/main/java/io/hstore/db/security/Quota.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.security;
 
 import io.hstore.engine.HStoreException;
diff --git a/database/src/main/java/io/hstore/db/security/Role.java b/database/src/main/java/io/hstore/db/security/Role.java
index 9da7b71..18f9f64 100644
--- a/database/src/main/java/io/hstore/db/security/Role.java
+++ b/database/src/main/java/io/hstore/db/security/Role.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.security;
 
 public enum Role {
diff --git a/database/src/main/java/io/hstore/db/security/Security.java b/database/src/main/java/io/hstore/db/security/Security.java
index 7e4ab65..ce3d016 100644
--- a/database/src/main/java/io/hstore/db/security/Security.java
+++ b/database/src/main/java/io/hstore/db/security/Security.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.security;
 
 import io.hstore.db.security.Quota.Usage;
diff --git a/database/src/main/java/io/hstore/db/semantic/Embedding.java b/database/src/main/java/io/hstore/db/semantic/Embedding.java
index 5c61746..95a6562 100644
--- a/database/src/main/java/io/hstore/db/semantic/Embedding.java
+++ b/database/src/main/java/io/hstore/db/semantic/Embedding.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.semantic;
 
 import io.hstore.engine.catalog.Slot;
diff --git a/database/src/main/java/io/hstore/db/semantic/Encoder.java b/database/src/main/java/io/hstore/db/semantic/Encoder.java
index 0cb8870..76d9219 100644
--- a/database/src/main/java/io/hstore/db/semantic/Encoder.java
+++ b/database/src/main/java/io/hstore/db/semantic/Encoder.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.semantic;
 
 import io.hstore.engine.tree.Hashing;
diff --git a/database/src/main/java/io/hstore/db/semantic/HnswIndex.java b/database/src/main/java/io/hstore/db/semantic/HnswIndex.java
index 7adb3d2..c23ae15 100644
--- a/database/src/main/java/io/hstore/db/semantic/HnswIndex.java
+++ b/database/src/main/java/io/hstore/db/semantic/HnswIndex.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.semantic;
 
 import java.io.DataInputStream;
diff --git a/database/src/main/java/io/hstore/db/semantic/HttpEncoder.java b/database/src/main/java/io/hstore/db/semantic/HttpEncoder.java
index 6a8f920..4dffa44 100644
--- a/database/src/main/java/io/hstore/db/semantic/HttpEncoder.java
+++ b/database/src/main/java/io/hstore/db/semantic/HttpEncoder.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.semantic;
 
 import io.hstore.db.value.Json;
diff --git a/database/src/main/java/io/hstore/db/semantic/SemanticPlane.java b/database/src/main/java/io/hstore/db/semantic/SemanticPlane.java
index 797efd5..ceb9967 100644
--- a/database/src/main/java/io/hstore/db/semantic/SemanticPlane.java
+++ b/database/src/main/java/io/hstore/db/semantic/SemanticPlane.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.semantic;
 
 import io.hstore.db.payload.PayloadStore;
diff --git a/database/src/main/java/io/hstore/db/signal/Signals.java b/database/src/main/java/io/hstore/db/signal/Signals.java
index 22e6f15..d42509e 100644
--- a/database/src/main/java/io/hstore/db/signal/Signals.java
+++ b/database/src/main/java/io/hstore/db/signal/Signals.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.signal;
 
 import io.hstore.db.Reader;
diff --git a/database/src/main/java/io/hstore/db/stats/Histogram.java b/database/src/main/java/io/hstore/db/stats/Histogram.java
index 7636d0c..3d77243 100644
--- a/database/src/main/java/io/hstore/db/stats/Histogram.java
+++ b/database/src/main/java/io/hstore/db/stats/Histogram.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.stats;
 
 import java.util.Arrays;
diff --git a/database/src/main/java/io/hstore/db/stats/Statistics.java b/database/src/main/java/io/hstore/db/stats/Statistics.java
index 1687883..c650447 100644
--- a/database/src/main/java/io/hstore/db/stats/Statistics.java
+++ b/database/src/main/java/io/hstore/db/stats/Statistics.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.stats;
 
 import io.hstore.engine.StorageEngine;
diff --git a/database/src/main/java/io/hstore/db/temporal/BranchMerge.java b/database/src/main/java/io/hstore/db/temporal/BranchMerge.java
index 874f0a3..2fcd4d6 100644
--- a/database/src/main/java/io/hstore/db/temporal/BranchMerge.java
+++ b/database/src/main/java/io/hstore/db/temporal/BranchMerge.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.temporal;
 
 import io.hstore.db.HypergraphDatabase;
diff --git a/database/src/main/java/io/hstore/db/temporal/StateBindings.java b/database/src/main/java/io/hstore/db/temporal/StateBindings.java
index 578848c..17f23cd 100644
--- a/database/src/main/java/io/hstore/db/temporal/StateBindings.java
+++ b/database/src/main/java/io/hstore/db/temporal/StateBindings.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.temporal;
 
 import io.hstore.db.Reader;
diff --git a/database/src/main/java/io/hstore/db/temporal/Temporal.java b/database/src/main/java/io/hstore/db/temporal/Temporal.java
index 300ea19..9d4141c 100644
--- a/database/src/main/java/io/hstore/db/temporal/Temporal.java
+++ b/database/src/main/java/io/hstore/db/temporal/Temporal.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.temporal;
 
 import io.hstore.db.HypergraphDatabase;
diff --git a/database/src/main/java/io/hstore/db/value/Json.java b/database/src/main/java/io/hstore/db/value/Json.java
index a9f7f0b..665f6f8 100644
--- a/database/src/main/java/io/hstore/db/value/Json.java
+++ b/database/src/main/java/io/hstore/db/value/Json.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.value;
 
 import io.hstore.engine.HStoreException;
diff --git a/database/src/main/java/io/hstore/db/value/TypeTag.java b/database/src/main/java/io/hstore/db/value/TypeTag.java
index 7d7fb17..d742ced 100644
--- a/database/src/main/java/io/hstore/db/value/TypeTag.java
+++ b/database/src/main/java/io/hstore/db/value/TypeTag.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.value;
 
 public enum TypeTag {
diff --git a/database/src/main/java/io/hstore/db/value/Value.java b/database/src/main/java/io/hstore/db/value/Value.java
index bc6e067..29aa9bb 100644
--- a/database/src/main/java/io/hstore/db/value/Value.java
+++ b/database/src/main/java/io/hstore/db/value/Value.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.value;
 
 import java.math.BigDecimal;
diff --git a/database/src/main/java/io/hstore/db/value/Values.java b/database/src/main/java/io/hstore/db/value/Values.java
index 40cf4e8..7d3d358 100644
--- a/database/src/main/java/io/hstore/db/value/Values.java
+++ b/database/src/main/java/io/hstore/db/value/Values.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.value;
 
 import io.hstore.engine.HStoreException;
diff --git a/database/src/main/java/io/hstore/db/view/MaterializedViews.java b/database/src/main/java/io/hstore/db/view/MaterializedViews.java
index b31769d..abd3300 100644
--- a/database/src/main/java/io/hstore/db/view/MaterializedViews.java
+++ b/database/src/main/java/io/hstore/db/view/MaterializedViews.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.view;
 
 import io.hstore.db.HypergraphDatabase;
diff --git a/database/src/main/java/io/hstore/db/view/ViewCell.java b/database/src/main/java/io/hstore/db/view/ViewCell.java
index cc7c1db..7361cab 100644
--- a/database/src/main/java/io/hstore/db/view/ViewCell.java
+++ b/database/src/main/java/io/hstore/db/view/ViewCell.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.view;
 
 import io.hstore.engine.page.ByteCursor;
diff --git a/database/src/main/java/module-info.java b/database/src/main/java/module-info.java
index a6f7bd0..fb0a98d 100644
--- a/database/src/main/java/module-info.java
+++ b/database/src/main/java/module-info.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 module io.hstore.db {
     requires transitive io.hstore.engine;
     requires java.net.http;
diff --git a/database/src/test/java/io/hstore/db/DatabaseTest.java b/database/src/test/java/io/hstore/db/DatabaseTest.java
index a9ae14f..f08b43a 100644
--- a/database/src/test/java/io/hstore/db/DatabaseTest.java
+++ b/database/src/test/java/io/hstore/db/DatabaseTest.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db;
 
 import io.hstore.db.evidence.AssertionType;
diff --git a/database/src/test/java/io/hstore/db/SecurityTest.java b/database/src/test/java/io/hstore/db/SecurityTest.java
index 8c50b10..18d025b 100644
--- a/database/src/test/java/io/hstore/db/SecurityTest.java
+++ b/database/src/test/java/io/hstore/db/SecurityTest.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db;
 
 import io.hstore.db.query.QueryResult;
diff --git a/database/src/test/java/io/hstore/db/query/QueryLanguageTest.java b/database/src/test/java/io/hstore/db/query/QueryLanguageTest.java
index 6ccebfe..b83ab0a 100644
--- a/database/src/test/java/io/hstore/db/query/QueryLanguageTest.java
+++ b/database/src/test/java/io/hstore/db/query/QueryLanguageTest.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.query;
 
 import io.hstore.db.DatabaseOptions;
diff --git a/database/src/test/java/io/hstore/db/semantic/SemanticPersistenceTest.java b/database/src/test/java/io/hstore/db/semantic/SemanticPersistenceTest.java
index f0a745e..c1c8780 100644
--- a/database/src/test/java/io/hstore/db/semantic/SemanticPersistenceTest.java
+++ b/database/src/test/java/io/hstore/db/semantic/SemanticPersistenceTest.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.db.semantic;
 
 import io.hstore.db.DatabaseOptions;
diff --git a/docker/docker-entrypoint.sh b/docker/docker-entrypoint.sh
index 42d9296..4481096 100755
--- a/docker/docker-entrypoint.sh
+++ b/docker/docker-entrypoint.sh
@@ -1,4 +1,6 @@
 #!/usr/bin/env bash
+# SPDX-FileCopyrightText: Metacog Labs
+# SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
 set -Eeuo pipefail
 
 log() {
diff --git a/engine/src/main/java/io/hstore/engine/Dictionary.java b/engine/src/main/java/io/hstore/engine/Dictionary.java
index 1bbcfa1..78bb013 100644
--- a/engine/src/main/java/io/hstore/engine/Dictionary.java
+++ b/engine/src/main/java/io/hstore/engine/Dictionary.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine;
 
 import io.hstore.engine.catalog.Branch;
diff --git a/engine/src/main/java/io/hstore/engine/EngineOptions.java b/engine/src/main/java/io/hstore/engine/EngineOptions.java
index c3f9c18..14bef77 100644
--- a/engine/src/main/java/io/hstore/engine/EngineOptions.java
+++ b/engine/src/main/java/io/hstore/engine/EngineOptions.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine;
 
 import io.hstore.engine.catalog.Slot;
diff --git a/engine/src/main/java/io/hstore/engine/EngineStats.java b/engine/src/main/java/io/hstore/engine/EngineStats.java
index 1712aed..a1f2281 100644
--- a/engine/src/main/java/io/hstore/engine/EngineStats.java
+++ b/engine/src/main/java/io/hstore/engine/EngineStats.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine;
 
 import io.hstore.engine.page.SegmentInfo;
diff --git a/engine/src/main/java/io/hstore/engine/HStoreException.java b/engine/src/main/java/io/hstore/engine/HStoreException.java
index 43c34b5..9228fde 100644
--- a/engine/src/main/java/io/hstore/engine/HStoreException.java
+++ b/engine/src/main/java/io/hstore/engine/HStoreException.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine;
 
 import io.hstore.engine.page.PageId;
diff --git a/engine/src/main/java/io/hstore/engine/StorageEngine.java b/engine/src/main/java/io/hstore/engine/StorageEngine.java
index d3f545f..67311fb 100644
--- a/engine/src/main/java/io/hstore/engine/StorageEngine.java
+++ b/engine/src/main/java/io/hstore/engine/StorageEngine.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine;
 
 import io.hstore.engine.catalog.Branch;
diff --git a/engine/src/main/java/io/hstore/engine/catalog/AtomCodec.java b/engine/src/main/java/io/hstore/engine/catalog/AtomCodec.java
index f2706c5..0f26474 100644
--- a/engine/src/main/java/io/hstore/engine/catalog/AtomCodec.java
+++ b/engine/src/main/java/io/hstore/engine/catalog/AtomCodec.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.catalog;
 
 import io.hstore.engine.catalog.AtomRecord.EdgeRecord;
diff --git a/engine/src/main/java/io/hstore/engine/catalog/AtomRecord.java b/engine/src/main/java/io/hstore/engine/catalog/AtomRecord.java
index 264c704..4af2cfc 100644
--- a/engine/src/main/java/io/hstore/engine/catalog/AtomRecord.java
+++ b/engine/src/main/java/io/hstore/engine/catalog/AtomRecord.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.catalog;
 
 import io.hstore.engine.topology.EdgeKind;
diff --git a/engine/src/main/java/io/hstore/engine/catalog/Branch.java b/engine/src/main/java/io/hstore/engine/catalog/Branch.java
index ce1695c..e64fd87 100644
--- a/engine/src/main/java/io/hstore/engine/catalog/Branch.java
+++ b/engine/src/main/java/io/hstore/engine/catalog/Branch.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.catalog;
 
 public record Branch(int id, String name, int parent, long baseGeneration, long createdAt, State state, RootVector roots) {
diff --git a/engine/src/main/java/io/hstore/engine/catalog/CatalogImage.java b/engine/src/main/java/io/hstore/engine/catalog/CatalogImage.java
index b194be6..ba6834e 100644
--- a/engine/src/main/java/io/hstore/engine/catalog/CatalogImage.java
+++ b/engine/src/main/java/io/hstore/engine/catalog/CatalogImage.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.catalog;
 
 import io.hstore.engine.page.ByteCursor;
diff --git a/engine/src/main/java/io/hstore/engine/catalog/CatalogStore.java b/engine/src/main/java/io/hstore/engine/catalog/CatalogStore.java
index 8e56247..9d866c5 100644
--- a/engine/src/main/java/io/hstore/engine/catalog/CatalogStore.java
+++ b/engine/src/main/java/io/hstore/engine/catalog/CatalogStore.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.catalog;
 
 import io.hstore.engine.page.ByteCursor;
diff --git a/engine/src/main/java/io/hstore/engine/catalog/EngineSlots.java b/engine/src/main/java/io/hstore/engine/catalog/EngineSlots.java
index 1d98741..eaf4603 100644
--- a/engine/src/main/java/io/hstore/engine/catalog/EngineSlots.java
+++ b/engine/src/main/java/io/hstore/engine/catalog/EngineSlots.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.catalog;
 
 import io.hstore.engine.index.IndexValues.CanonicalName;
diff --git a/engine/src/main/java/io/hstore/engine/catalog/Generation.java b/engine/src/main/java/io/hstore/engine/catalog/Generation.java
index d672eae..113003b 100644
--- a/engine/src/main/java/io/hstore/engine/catalog/Generation.java
+++ b/engine/src/main/java/io/hstore/engine/catalog/Generation.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.catalog;
 
 import io.hstore.engine.HStoreException;
diff --git a/engine/src/main/java/io/hstore/engine/catalog/RootVector.java b/engine/src/main/java/io/hstore/engine/catalog/RootVector.java
index 966dc00..8a40256 100644
--- a/engine/src/main/java/io/hstore/engine/catalog/RootVector.java
+++ b/engine/src/main/java/io/hstore/engine/catalog/RootVector.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.catalog;
 
 import io.hstore.engine.tree.Ref;
diff --git a/engine/src/main/java/io/hstore/engine/catalog/Slot.java b/engine/src/main/java/io/hstore/engine/catalog/Slot.java
index f8d9c84..cd8475b 100644
--- a/engine/src/main/java/io/hstore/engine/catalog/Slot.java
+++ b/engine/src/main/java/io/hstore/engine/catalog/Slot.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.catalog;
 
 import io.hstore.engine.tree.TreeSchema;
diff --git a/engine/src/main/java/io/hstore/engine/catalog/SlotChange.java b/engine/src/main/java/io/hstore/engine/catalog/SlotChange.java
index 1e65fa7..88a2e6f 100644
--- a/engine/src/main/java/io/hstore/engine/catalog/SlotChange.java
+++ b/engine/src/main/java/io/hstore/engine/catalog/SlotChange.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.catalog;
 
 import java.util.Optional;
diff --git a/engine/src/main/java/io/hstore/engine/catalog/SlotRegistry.java b/engine/src/main/java/io/hstore/engine/catalog/SlotRegistry.java
index bcaa508..fdf50b1 100644
--- a/engine/src/main/java/io/hstore/engine/catalog/SlotRegistry.java
+++ b/engine/src/main/java/io/hstore/engine/catalog/SlotRegistry.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.catalog;
 
 import io.hstore.engine.HStoreException;
diff --git a/engine/src/main/java/io/hstore/engine/catalog/Symbol.java b/engine/src/main/java/io/hstore/engine/catalog/Symbol.java
index c420f01..4ecae70 100644
--- a/engine/src/main/java/io/hstore/engine/catalog/Symbol.java
+++ b/engine/src/main/java/io/hstore/engine/catalog/Symbol.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.catalog;
 
 import io.hstore.engine.page.ByteCursor;
diff --git a/engine/src/main/java/io/hstore/engine/feed/ChangeFeed.java b/engine/src/main/java/io/hstore/engine/feed/ChangeFeed.java
index 9c4a4ad..fd7f30c 100644
--- a/engine/src/main/java/io/hstore/engine/feed/ChangeFeed.java
+++ b/engine/src/main/java/io/hstore/engine/feed/ChangeFeed.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.feed;
 
 import io.hstore.engine.HStoreException;
diff --git a/engine/src/main/java/io/hstore/engine/feed/CommitEvent.java b/engine/src/main/java/io/hstore/engine/feed/CommitEvent.java
index 44e05ca..4e12a65 100644
--- a/engine/src/main/java/io/hstore/engine/feed/CommitEvent.java
+++ b/engine/src/main/java/io/hstore/engine/feed/CommitEvent.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.feed;
 
 import io.hstore.engine.catalog.SlotChange;
diff --git a/engine/src/main/java/io/hstore/engine/feed/FeedCodec.java b/engine/src/main/java/io/hstore/engine/feed/FeedCodec.java
index ef5844e..0872d6b 100644
--- a/engine/src/main/java/io/hstore/engine/feed/FeedCodec.java
+++ b/engine/src/main/java/io/hstore/engine/feed/FeedCodec.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.feed;
 
 import io.hstore.engine.catalog.Slot;
diff --git a/engine/src/main/java/io/hstore/engine/index/IndexValues.java b/engine/src/main/java/io/hstore/engine/index/IndexValues.java
index 2802111..b8bc61c 100644
--- a/engine/src/main/java/io/hstore/engine/index/IndexValues.java
+++ b/engine/src/main/java/io/hstore/engine/index/IndexValues.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.index;
 
 import io.hstore.engine.page.ByteCursor;
diff --git a/engine/src/main/java/io/hstore/engine/index/PostingIndex.java b/engine/src/main/java/io/hstore/engine/index/PostingIndex.java
index 6e2200c..56d7b07 100644
--- a/engine/src/main/java/io/hstore/engine/index/PostingIndex.java
+++ b/engine/src/main/java/io/hstore/engine/index/PostingIndex.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.index;
 
 import io.hstore.engine.tree.BulkBuilder;
diff --git a/engine/src/main/java/io/hstore/engine/index/Postings.java b/engine/src/main/java/io/hstore/engine/index/Postings.java
index 58de8e9..053789a 100644
--- a/engine/src/main/java/io/hstore/engine/index/Postings.java
+++ b/engine/src/main/java/io/hstore/engine/index/Postings.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.index;
 
 import io.hstore.engine.tree.Ref;
diff --git a/engine/src/main/java/io/hstore/engine/index/PostingsCodec.java b/engine/src/main/java/io/hstore/engine/index/PostingsCodec.java
index 3d2a60a..aa7286d 100644
--- a/engine/src/main/java/io/hstore/engine/index/PostingsCodec.java
+++ b/engine/src/main/java/io/hstore/engine/index/PostingsCodec.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.index;
 
 import io.hstore.engine.page.ByteCursor;
diff --git a/engine/src/main/java/io/hstore/engine/maintenance/Checkpointer.java b/engine/src/main/java/io/hstore/engine/maintenance/Checkpointer.java
index befdc25..02e8489 100644
--- a/engine/src/main/java/io/hstore/engine/maintenance/Checkpointer.java
+++ b/engine/src/main/java/io/hstore/engine/maintenance/Checkpointer.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.maintenance;
 
 import io.hstore.engine.catalog.CatalogImage;
diff --git a/engine/src/main/java/io/hstore/engine/maintenance/Compactor.java b/engine/src/main/java/io/hstore/engine/maintenance/Compactor.java
index 89f0a6a..e47068a 100644
--- a/engine/src/main/java/io/hstore/engine/maintenance/Compactor.java
+++ b/engine/src/main/java/io/hstore/engine/maintenance/Compactor.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.maintenance;
 
 import io.hstore.engine.catalog.Branch;
diff --git a/engine/src/main/java/io/hstore/engine/maintenance/Recovery.java b/engine/src/main/java/io/hstore/engine/maintenance/Recovery.java
index e339e0f..b5124c5 100644
--- a/engine/src/main/java/io/hstore/engine/maintenance/Recovery.java
+++ b/engine/src/main/java/io/hstore/engine/maintenance/Recovery.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.maintenance;
 
 import io.hstore.engine.catalog.Branch;
diff --git a/engine/src/main/java/io/hstore/engine/page/ByteCursor.java b/engine/src/main/java/io/hstore/engine/page/ByteCursor.java
index fb7d2f1..3330e5b 100644
--- a/engine/src/main/java/io/hstore/engine/page/ByteCursor.java
+++ b/engine/src/main/java/io/hstore/engine/page/ByteCursor.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.page;
 
 import java.lang.foreign.MemorySegment;
diff --git a/engine/src/main/java/io/hstore/engine/page/Checksums.java b/engine/src/main/java/io/hstore/engine/page/Checksums.java
index c2a7698..1b9de9c 100644
--- a/engine/src/main/java/io/hstore/engine/page/Checksums.java
+++ b/engine/src/main/java/io/hstore/engine/page/Checksums.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.page;
 
 import java.lang.foreign.MemorySegment;
diff --git a/engine/src/main/java/io/hstore/engine/page/IoTrace.java b/engine/src/main/java/io/hstore/engine/page/IoTrace.java
index ab74c5d..c213f91 100644
--- a/engine/src/main/java/io/hstore/engine/page/IoTrace.java
+++ b/engine/src/main/java/io/hstore/engine/page/IoTrace.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.page;
 
 import io.hstore.engine.HStoreException;
diff --git a/engine/src/main/java/io/hstore/engine/page/PageHeader.java b/engine/src/main/java/io/hstore/engine/page/PageHeader.java
index 4d014d3..71d4759 100644
--- a/engine/src/main/java/io/hstore/engine/page/PageHeader.java
+++ b/engine/src/main/java/io/hstore/engine/page/PageHeader.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.page;
 
 import io.hstore.engine.HStoreException;
diff --git a/engine/src/main/java/io/hstore/engine/page/PageId.java b/engine/src/main/java/io/hstore/engine/page/PageId.java
index e27c92a..49cc445 100644
--- a/engine/src/main/java/io/hstore/engine/page/PageId.java
+++ b/engine/src/main/java/io/hstore/engine/page/PageId.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.page;
 
 public record PageId(int segment, int offset, int generation) {
diff --git a/engine/src/main/java/io/hstore/engine/page/PageStore.java b/engine/src/main/java/io/hstore/engine/page/PageStore.java
index f58464f..64a2ad1 100644
--- a/engine/src/main/java/io/hstore/engine/page/PageStore.java
+++ b/engine/src/main/java/io/hstore/engine/page/PageStore.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.page;
 
 import io.hstore.engine.HStoreException;
diff --git a/engine/src/main/java/io/hstore/engine/page/PageType.java b/engine/src/main/java/io/hstore/engine/page/PageType.java
index 9b94da0..a46a270 100644
--- a/engine/src/main/java/io/hstore/engine/page/PageType.java
+++ b/engine/src/main/java/io/hstore/engine/page/PageType.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.page;
 
 public enum PageType {
diff --git a/engine/src/main/java/io/hstore/engine/page/SegmentFile.java b/engine/src/main/java/io/hstore/engine/page/SegmentFile.java
index d3b096d..0620943 100644
--- a/engine/src/main/java/io/hstore/engine/page/SegmentFile.java
+++ b/engine/src/main/java/io/hstore/engine/page/SegmentFile.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.page;
 
 import io.hstore.engine.HStoreException;
diff --git a/engine/src/main/java/io/hstore/engine/page/SegmentInfo.java b/engine/src/main/java/io/hstore/engine/page/SegmentInfo.java
index 3b334cd..0879417 100644
--- a/engine/src/main/java/io/hstore/engine/page/SegmentInfo.java
+++ b/engine/src/main/java/io/hstore/engine/page/SegmentInfo.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.page;
 
 public record SegmentInfo(int id, SegmentState state, long pages, long units, long retiredAt) {
diff --git a/engine/src/main/java/io/hstore/engine/page/SegmentState.java b/engine/src/main/java/io/hstore/engine/page/SegmentState.java
index 48e82eb..e00dfb6 100644
--- a/engine/src/main/java/io/hstore/engine/page/SegmentState.java
+++ b/engine/src/main/java/io/hstore/engine/page/SegmentState.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.page;
 
 public enum SegmentState {
diff --git a/engine/src/main/java/io/hstore/engine/topology/EdgeKind.java b/engine/src/main/java/io/hstore/engine/topology/EdgeKind.java
index 16c79d2..062af88 100644
--- a/engine/src/main/java/io/hstore/engine/topology/EdgeKind.java
+++ b/engine/src/main/java/io/hstore/engine/topology/EdgeKind.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.topology;
 
 public enum EdgeKind {
diff --git a/engine/src/main/java/io/hstore/engine/topology/Hyperedge.java b/engine/src/main/java/io/hstore/engine/topology/Hyperedge.java
index c15caa5..b3d1e7f 100644
--- a/engine/src/main/java/io/hstore/engine/topology/Hyperedge.java
+++ b/engine/src/main/java/io/hstore/engine/topology/Hyperedge.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.topology;
 
 import io.hstore.engine.HStoreException;
diff --git a/engine/src/main/java/io/hstore/engine/topology/Incidence.java b/engine/src/main/java/io/hstore/engine/topology/Incidence.java
index ee4e3d7..5a4ad9f 100644
--- a/engine/src/main/java/io/hstore/engine/topology/Incidence.java
+++ b/engine/src/main/java/io/hstore/engine/topology/Incidence.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.topology;
 
 import io.hstore.engine.tree.Hashing;
diff --git a/engine/src/main/java/io/hstore/engine/topology/IncidenceCodec.java b/engine/src/main/java/io/hstore/engine/topology/IncidenceCodec.java
index e943987..b3c4549 100644
--- a/engine/src/main/java/io/hstore/engine/topology/IncidenceCodec.java
+++ b/engine/src/main/java/io/hstore/engine/topology/IncidenceCodec.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.topology;
 
 import io.hstore.engine.page.ByteCursor;
diff --git a/engine/src/main/java/io/hstore/engine/topology/MemberChange.java b/engine/src/main/java/io/hstore/engine/topology/MemberChange.java
index e2b9d66..d0db014 100644
--- a/engine/src/main/java/io/hstore/engine/topology/MemberChange.java
+++ b/engine/src/main/java/io/hstore/engine/topology/MemberChange.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.topology;
 
 public sealed interface MemberChange {
diff --git a/engine/src/main/java/io/hstore/engine/topology/TopologySchemas.java b/engine/src/main/java/io/hstore/engine/topology/TopologySchemas.java
index eca0ec9..8f39abe 100644
--- a/engine/src/main/java/io/hstore/engine/topology/TopologySchemas.java
+++ b/engine/src/main/java/io/hstore/engine/topology/TopologySchemas.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.topology;
 
 import io.hstore.engine.page.ByteCursor;
diff --git a/engine/src/main/java/io/hstore/engine/topology/Validity.java b/engine/src/main/java/io/hstore/engine/topology/Validity.java
index 068560e..1a6f160 100644
--- a/engine/src/main/java/io/hstore/engine/topology/Validity.java
+++ b/engine/src/main/java/io/hstore/engine/topology/Validity.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.topology;
 
 public record Validity(long from, long to) {
diff --git a/engine/src/main/java/io/hstore/engine/topology/Weight.java b/engine/src/main/java/io/hstore/engine/topology/Weight.java
index 592867b..569f5bf 100644
--- a/engine/src/main/java/io/hstore/engine/topology/Weight.java
+++ b/engine/src/main/java/io/hstore/engine/topology/Weight.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.topology;
 
 public final class Weight {
diff --git a/engine/src/main/java/io/hstore/engine/tree/Branch.java b/engine/src/main/java/io/hstore/engine/tree/Branch.java
index 56a9604..ae481e1 100644
--- a/engine/src/main/java/io/hstore/engine/tree/Branch.java
+++ b/engine/src/main/java/io/hstore/engine/tree/Branch.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.tree;
 
 import java.util.Arrays;
diff --git a/engine/src/main/java/io/hstore/engine/tree/BulkBuilder.java b/engine/src/main/java/io/hstore/engine/tree/BulkBuilder.java
index c771f45..01793bb 100644
--- a/engine/src/main/java/io/hstore/engine/tree/BulkBuilder.java
+++ b/engine/src/main/java/io/hstore/engine/tree/BulkBuilder.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.tree;
 
 import io.hstore.engine.page.ByteCursor;
diff --git a/engine/src/main/java/io/hstore/engine/tree/Entry.java b/engine/src/main/java/io/hstore/engine/tree/Entry.java
index 3c77ba1..cad05e5 100644
--- a/engine/src/main/java/io/hstore/engine/tree/Entry.java
+++ b/engine/src/main/java/io/hstore/engine/tree/Entry.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.tree;
 
 public record Entry<V>(long key, V value) {
diff --git a/engine/src/main/java/io/hstore/engine/tree/EntryMeasure.java b/engine/src/main/java/io/hstore/engine/tree/EntryMeasure.java
index 4486666..6a968af 100644
--- a/engine/src/main/java/io/hstore/engine/tree/EntryMeasure.java
+++ b/engine/src/main/java/io/hstore/engine/tree/EntryMeasure.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.tree;
 
 import java.util.function.ToLongFunction;
diff --git a/engine/src/main/java/io/hstore/engine/tree/FingerprintMode.java b/engine/src/main/java/io/hstore/engine/tree/FingerprintMode.java
index b19aea2..ab49ed1 100644
--- a/engine/src/main/java/io/hstore/engine/tree/FingerprintMode.java
+++ b/engine/src/main/java/io/hstore/engine/tree/FingerprintMode.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.tree;
 
 public enum FingerprintMode {
diff --git a/engine/src/main/java/io/hstore/engine/tree/Hashing.java b/engine/src/main/java/io/hstore/engine/tree/Hashing.java
index 26496cb..06958fa 100644
--- a/engine/src/main/java/io/hstore/engine/tree/Hashing.java
+++ b/engine/src/main/java/io/hstore/engine/tree/Hashing.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.tree;
 
 import java.nio.charset.StandardCharsets;
diff --git a/engine/src/main/java/io/hstore/engine/tree/Keyset.java b/engine/src/main/java/io/hstore/engine/tree/Keyset.java
index c0995ea..fd35fdd 100644
--- a/engine/src/main/java/io/hstore/engine/tree/Keyset.java
+++ b/engine/src/main/java/io/hstore/engine/tree/Keyset.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.tree;
 
 import java.util.List;
diff --git a/engine/src/main/java/io/hstore/engine/tree/Layout.java b/engine/src/main/java/io/hstore/engine/tree/Layout.java
index e16b7cd..3463294 100644
--- a/engine/src/main/java/io/hstore/engine/tree/Layout.java
+++ b/engine/src/main/java/io/hstore/engine/tree/Layout.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.tree;
 
 import io.hstore.engine.page.PageHeader;
diff --git a/engine/src/main/java/io/hstore/engine/tree/Leaf.java b/engine/src/main/java/io/hstore/engine/tree/Leaf.java
index f06facf..012116d 100644
--- a/engine/src/main/java/io/hstore/engine/tree/Leaf.java
+++ b/engine/src/main/java/io/hstore/engine/tree/Leaf.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.tree;
 
 import io.hstore.engine.page.ByteCursor;
diff --git a/engine/src/main/java/io/hstore/engine/tree/Materializer.java b/engine/src/main/java/io/hstore/engine/tree/Materializer.java
index b599aef..698d1c3 100644
--- a/engine/src/main/java/io/hstore/engine/tree/Materializer.java
+++ b/engine/src/main/java/io/hstore/engine/tree/Materializer.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.tree;
 
 import io.hstore.engine.page.PageHeader;
diff --git a/engine/src/main/java/io/hstore/engine/tree/Node.java b/engine/src/main/java/io/hstore/engine/tree/Node.java
index a8966f1..4e0a723 100644
--- a/engine/src/main/java/io/hstore/engine/tree/Node.java
+++ b/engine/src/main/java/io/hstore/engine/tree/Node.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.tree;
 
 public sealed abstract class Node permits Leaf, Branch {
diff --git a/engine/src/main/java/io/hstore/engine/tree/NodeCache.java b/engine/src/main/java/io/hstore/engine/tree/NodeCache.java
index 7349cde..fdd75e5 100644
--- a/engine/src/main/java/io/hstore/engine/tree/NodeCache.java
+++ b/engine/src/main/java/io/hstore/engine/tree/NodeCache.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.tree;
 
 import java.util.Arrays;
diff --git a/engine/src/main/java/io/hstore/engine/tree/NodeCodec.java b/engine/src/main/java/io/hstore/engine/tree/NodeCodec.java
index 39579bc..6bd0e7e 100644
--- a/engine/src/main/java/io/hstore/engine/tree/NodeCodec.java
+++ b/engine/src/main/java/io/hstore/engine/tree/NodeCodec.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.tree;
 
 import io.hstore.engine.HStoreException;
diff --git a/engine/src/main/java/io/hstore/engine/tree/NodeSource.java b/engine/src/main/java/io/hstore/engine/tree/NodeSource.java
index 312ea1e..a355060 100644
--- a/engine/src/main/java/io/hstore/engine/tree/NodeSource.java
+++ b/engine/src/main/java/io/hstore/engine/tree/NodeSource.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.tree;
 
 public interface NodeSource {
diff --git a/engine/src/main/java/io/hstore/engine/tree/PagedNodeSource.java b/engine/src/main/java/io/hstore/engine/tree/PagedNodeSource.java
index 7f45720..6971863 100644
--- a/engine/src/main/java/io/hstore/engine/tree/PagedNodeSource.java
+++ b/engine/src/main/java/io/hstore/engine/tree/PagedNodeSource.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.tree;
 
 import io.hstore.engine.HStoreException;
diff --git a/engine/src/main/java/io/hstore/engine/tree/Ref.java b/engine/src/main/java/io/hstore/engine/tree/Ref.java
index 1555335..502df75 100644
--- a/engine/src/main/java/io/hstore/engine/tree/Ref.java
+++ b/engine/src/main/java/io/hstore/engine/tree/Ref.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.tree;
 
 import io.hstore.engine.page.ByteCursor;
diff --git a/engine/src/main/java/io/hstore/engine/tree/Summary.java b/engine/src/main/java/io/hstore/engine/tree/Summary.java
index f594349..e173658 100644
--- a/engine/src/main/java/io/hstore/engine/tree/Summary.java
+++ b/engine/src/main/java/io/hstore/engine/tree/Summary.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.tree;
 
 import io.hstore.engine.page.ByteCursor;
diff --git a/engine/src/main/java/io/hstore/engine/tree/Tree.java b/engine/src/main/java/io/hstore/engine/tree/Tree.java
index 34890fd..52063db 100644
--- a/engine/src/main/java/io/hstore/engine/tree/Tree.java
+++ b/engine/src/main/java/io/hstore/engine/tree/Tree.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.tree;
 
 import java.util.ArrayList;
diff --git a/engine/src/main/java/io/hstore/engine/tree/TreeAlgebra.java b/engine/src/main/java/io/hstore/engine/tree/TreeAlgebra.java
index eb7d0cc..85fe5e6 100644
--- a/engine/src/main/java/io/hstore/engine/tree/TreeAlgebra.java
+++ b/engine/src/main/java/io/hstore/engine/tree/TreeAlgebra.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.tree;
 
 import java.util.Comparator;
diff --git a/engine/src/main/java/io/hstore/engine/tree/TreeCursor.java b/engine/src/main/java/io/hstore/engine/tree/TreeCursor.java
index 6296152..c5d5c1b 100644
--- a/engine/src/main/java/io/hstore/engine/tree/TreeCursor.java
+++ b/engine/src/main/java/io/hstore/engine/tree/TreeCursor.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.tree;
 
 import java.util.Iterator;
diff --git a/engine/src/main/java/io/hstore/engine/tree/TreeDiff.java b/engine/src/main/java/io/hstore/engine/tree/TreeDiff.java
index f99e963..5d82a63 100644
--- a/engine/src/main/java/io/hstore/engine/tree/TreeDiff.java
+++ b/engine/src/main/java/io/hstore/engine/tree/TreeDiff.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.tree;
 
 import java.util.ArrayDeque;
diff --git a/engine/src/main/java/io/hstore/engine/tree/TreeSchema.java b/engine/src/main/java/io/hstore/engine/tree/TreeSchema.java
index a2866e1..3f483c5 100644
--- a/engine/src/main/java/io/hstore/engine/tree/TreeSchema.java
+++ b/engine/src/main/java/io/hstore/engine/tree/TreeSchema.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.tree;
 
 public record TreeSchema<V>(int id, String name, FingerprintMode fingerprint, ValueCodec<V> codec, EntryMeasure<V> measure) {
diff --git a/engine/src/main/java/io/hstore/engine/tree/TreeVerifier.java b/engine/src/main/java/io/hstore/engine/tree/TreeVerifier.java
index 15ce942..6914582 100644
--- a/engine/src/main/java/io/hstore/engine/tree/TreeVerifier.java
+++ b/engine/src/main/java/io/hstore/engine/tree/TreeVerifier.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.tree;
 
 import io.hstore.engine.HStoreException;
diff --git a/engine/src/main/java/io/hstore/engine/tree/TreeWalker.java b/engine/src/main/java/io/hstore/engine/tree/TreeWalker.java
index 67233f5..44db784 100644
--- a/engine/src/main/java/io/hstore/engine/tree/TreeWalker.java
+++ b/engine/src/main/java/io/hstore/engine/tree/TreeWalker.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.tree;
 
 import java.util.Map;
diff --git a/engine/src/main/java/io/hstore/engine/tree/TreeWriter.java b/engine/src/main/java/io/hstore/engine/tree/TreeWriter.java
index 658b013..90cdef3 100644
--- a/engine/src/main/java/io/hstore/engine/tree/TreeWriter.java
+++ b/engine/src/main/java/io/hstore/engine/tree/TreeWriter.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.tree;
 
 import io.hstore.engine.HStoreException;
diff --git a/engine/src/main/java/io/hstore/engine/tree/Trees.java b/engine/src/main/java/io/hstore/engine/tree/Trees.java
index 06dec4d..cd0bdfc 100644
--- a/engine/src/main/java/io/hstore/engine/tree/Trees.java
+++ b/engine/src/main/java/io/hstore/engine/tree/Trees.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.tree;
 
 final class Trees {
diff --git a/engine/src/main/java/io/hstore/engine/tree/ValueCodec.java b/engine/src/main/java/io/hstore/engine/tree/ValueCodec.java
index 2b31733..7037700 100644
--- a/engine/src/main/java/io/hstore/engine/tree/ValueCodec.java
+++ b/engine/src/main/java/io/hstore/engine/tree/ValueCodec.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.tree;
 
 import io.hstore.engine.page.ByteCursor;
diff --git a/engine/src/main/java/io/hstore/engine/tree/WriteScope.java b/engine/src/main/java/io/hstore/engine/tree/WriteScope.java
index 6ee7fbc..16be934 100644
--- a/engine/src/main/java/io/hstore/engine/tree/WriteScope.java
+++ b/engine/src/main/java/io/hstore/engine/tree/WriteScope.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.tree;
 
 public final class WriteScope {
diff --git a/engine/src/main/java/io/hstore/engine/txn/CommitResult.java b/engine/src/main/java/io/hstore/engine/txn/CommitResult.java
index 5e21f9e..d8142c7 100644
--- a/engine/src/main/java/io/hstore/engine/txn/CommitResult.java
+++ b/engine/src/main/java/io/hstore/engine/txn/CommitResult.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.txn;
 
 public record CommitResult(long txnId, long generation, Outcome outcome, long pagesWritten, long walBytes, int memberChanges, int slotChanges) {
diff --git a/engine/src/main/java/io/hstore/engine/txn/CrashPoint.java b/engine/src/main/java/io/hstore/engine/txn/CrashPoint.java
index f6e4b18..d78ce2a 100644
--- a/engine/src/main/java/io/hstore/engine/txn/CrashPoint.java
+++ b/engine/src/main/java/io/hstore/engine/txn/CrashPoint.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.txn;
 
 public enum CrashPoint {
diff --git a/engine/src/main/java/io/hstore/engine/txn/Derivation.java b/engine/src/main/java/io/hstore/engine/txn/Derivation.java
index acaaae5..71fe28c 100644
--- a/engine/src/main/java/io/hstore/engine/txn/Derivation.java
+++ b/engine/src/main/java/io/hstore/engine/txn/Derivation.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.txn;
 
 import io.hstore.engine.catalog.SlotChange;
diff --git a/engine/src/main/java/io/hstore/engine/txn/Durability.java b/engine/src/main/java/io/hstore/engine/txn/Durability.java
index 9bcdfec..357e3cd 100644
--- a/engine/src/main/java/io/hstore/engine/txn/Durability.java
+++ b/engine/src/main/java/io/hstore/engine/txn/Durability.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.txn;
 
 public enum Durability {
diff --git a/engine/src/main/java/io/hstore/engine/txn/EdgeAction.java b/engine/src/main/java/io/hstore/engine/txn/EdgeAction.java
index 2cbb5d6..7d35bd0 100644
--- a/engine/src/main/java/io/hstore/engine/txn/EdgeAction.java
+++ b/engine/src/main/java/io/hstore/engine/txn/EdgeAction.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.txn;
 
 import io.hstore.engine.topology.Hyperedge;
diff --git a/engine/src/main/java/io/hstore/engine/txn/EngineDerivations.java b/engine/src/main/java/io/hstore/engine/txn/EngineDerivations.java
index b5fff39..dffeff1 100644
--- a/engine/src/main/java/io/hstore/engine/txn/EngineDerivations.java
+++ b/engine/src/main/java/io/hstore/engine/txn/EngineDerivations.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.txn;
 
 import io.hstore.engine.catalog.AtomRecord.NodeRecord;
diff --git a/engine/src/main/java/io/hstore/engine/txn/GroupCommitter.java b/engine/src/main/java/io/hstore/engine/txn/GroupCommitter.java
index 755bed9..e8c3f19 100644
--- a/engine/src/main/java/io/hstore/engine/txn/GroupCommitter.java
+++ b/engine/src/main/java/io/hstore/engine/txn/GroupCommitter.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.txn;
 
 import io.hstore.engine.HStoreException;
diff --git a/engine/src/main/java/io/hstore/engine/txn/IncidentEdge.java b/engine/src/main/java/io/hstore/engine/txn/IncidentEdge.java
index 0a2da22..51cb346 100644
--- a/engine/src/main/java/io/hstore/engine/txn/IncidentEdge.java
+++ b/engine/src/main/java/io/hstore/engine/txn/IncidentEdge.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.txn;
 
 public record IncidentEdge(long edge, int roleSet, long locator) {
diff --git a/engine/src/main/java/io/hstore/engine/txn/Isolation.java b/engine/src/main/java/io/hstore/engine/txn/Isolation.java
index f6f7f77..890a4f6 100644
--- a/engine/src/main/java/io/hstore/engine/txn/Isolation.java
+++ b/engine/src/main/java/io/hstore/engine/txn/Isolation.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.txn;
 
 public enum Isolation {
diff --git a/engine/src/main/java/io/hstore/engine/txn/Op.java b/engine/src/main/java/io/hstore/engine/txn/Op.java
index ec5a7d8..2d070ae 100644
--- a/engine/src/main/java/io/hstore/engine/txn/Op.java
+++ b/engine/src/main/java/io/hstore/engine/txn/Op.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.txn;
 
 import io.hstore.engine.HStoreException;
diff --git a/engine/src/main/java/io/hstore/engine/txn/Snapshot.java b/engine/src/main/java/io/hstore/engine/txn/Snapshot.java
index 763219d..6e0e515 100644
--- a/engine/src/main/java/io/hstore/engine/txn/Snapshot.java
+++ b/engine/src/main/java/io/hstore/engine/txn/Snapshot.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.txn;
 
 import io.hstore.engine.catalog.Branch;
diff --git a/engine/src/main/java/io/hstore/engine/txn/Transaction.java b/engine/src/main/java/io/hstore/engine/txn/Transaction.java
index ce0bfb2..9260c6b 100644
--- a/engine/src/main/java/io/hstore/engine/txn/Transaction.java
+++ b/engine/src/main/java/io/hstore/engine/txn/Transaction.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.txn;
 
 import io.hstore.engine.HStoreException;
diff --git a/engine/src/main/java/io/hstore/engine/txn/TransactionManager.java b/engine/src/main/java/io/hstore/engine/txn/TransactionManager.java
index 443f9bc..42e2801 100644
--- a/engine/src/main/java/io/hstore/engine/txn/TransactionManager.java
+++ b/engine/src/main/java/io/hstore/engine/txn/TransactionManager.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.txn;
 
 import io.hstore.engine.HStoreException;
diff --git a/engine/src/main/java/io/hstore/engine/txn/TxnOptions.java b/engine/src/main/java/io/hstore/engine/txn/TxnOptions.java
index 978e2bc..0163777 100644
--- a/engine/src/main/java/io/hstore/engine/txn/TxnOptions.java
+++ b/engine/src/main/java/io/hstore/engine/txn/TxnOptions.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.txn;
 
 import io.hstore.engine.catalog.Branch;
diff --git a/engine/src/main/java/io/hstore/engine/txn/View.java b/engine/src/main/java/io/hstore/engine/txn/View.java
index 6b509ec..d9b2d19 100644
--- a/engine/src/main/java/io/hstore/engine/txn/View.java
+++ b/engine/src/main/java/io/hstore/engine/txn/View.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.txn;
 
 import io.hstore.engine.HStoreException;
diff --git a/engine/src/main/java/io/hstore/engine/txn/Views.java b/engine/src/main/java/io/hstore/engine/txn/Views.java
index a5dbdb5..c59b909 100644
--- a/engine/src/main/java/io/hstore/engine/txn/Views.java
+++ b/engine/src/main/java/io/hstore/engine/txn/Views.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.txn;
 
 import io.hstore.engine.catalog.EngineSlots;
diff --git a/engine/src/main/java/io/hstore/engine/txn/WalMode.java b/engine/src/main/java/io/hstore/engine/txn/WalMode.java
index 8b1c51d..f9d8540 100644
--- a/engine/src/main/java/io/hstore/engine/txn/WalMode.java
+++ b/engine/src/main/java/io/hstore/engine/txn/WalMode.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.txn;
 
 public enum WalMode {
diff --git a/engine/src/main/java/io/hstore/engine/txn/Workspace.java b/engine/src/main/java/io/hstore/engine/txn/Workspace.java
index 199a8e9..25e1b8d 100644
--- a/engine/src/main/java/io/hstore/engine/txn/Workspace.java
+++ b/engine/src/main/java/io/hstore/engine/txn/Workspace.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.txn;
 
 import io.hstore.engine.HStoreException;
diff --git a/engine/src/main/java/io/hstore/engine/wal/WalRecord.java b/engine/src/main/java/io/hstore/engine/wal/WalRecord.java
index 2e00ec3..28a996c 100644
--- a/engine/src/main/java/io/hstore/engine/wal/WalRecord.java
+++ b/engine/src/main/java/io/hstore/engine/wal/WalRecord.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.wal;
 
 import io.hstore.engine.catalog.Branch;
diff --git a/engine/src/main/java/io/hstore/engine/wal/WriteAheadLog.java b/engine/src/main/java/io/hstore/engine/wal/WriteAheadLog.java
index af9c72b..20dd503 100644
--- a/engine/src/main/java/io/hstore/engine/wal/WriteAheadLog.java
+++ b/engine/src/main/java/io/hstore/engine/wal/WriteAheadLog.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.wal;
 
 import io.hstore.engine.HStoreException;
diff --git a/engine/src/main/java/module-info.java b/engine/src/main/java/module-info.java
index d25ea3c..c23d5d1 100644
--- a/engine/src/main/java/module-info.java
+++ b/engine/src/main/java/module-info.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 module io.hstore.engine {
     exports io.hstore.engine;
     exports io.hstore.engine.catalog;
diff --git a/engine/src/test/java/io/hstore/engine/CrashRecoveryTest.java b/engine/src/test/java/io/hstore/engine/CrashRecoveryTest.java
index 2a93987..29103fb 100644
--- a/engine/src/test/java/io/hstore/engine/CrashRecoveryTest.java
+++ b/engine/src/test/java/io/hstore/engine/CrashRecoveryTest.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine;
 
 import io.hstore.engine.topology.EdgeKind;
diff --git a/engine/src/test/java/io/hstore/engine/EngineTest.java b/engine/src/test/java/io/hstore/engine/EngineTest.java
index 761ea53..e45f371 100644
--- a/engine/src/test/java/io/hstore/engine/EngineTest.java
+++ b/engine/src/test/java/io/hstore/engine/EngineTest.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine;
 
 import io.hstore.engine.catalog.Branch;
diff --git a/engine/src/test/java/io/hstore/engine/topology/IncidenceCodecTest.java b/engine/src/test/java/io/hstore/engine/topology/IncidenceCodecTest.java
index 1aa7b89..091aba3 100644
--- a/engine/src/test/java/io/hstore/engine/topology/IncidenceCodecTest.java
+++ b/engine/src/test/java/io/hstore/engine/topology/IncidenceCodecTest.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.topology;
 
 import io.hstore.engine.page.ByteCursor;
diff --git a/engine/src/test/java/io/hstore/engine/tree/MemoryPages.java b/engine/src/test/java/io/hstore/engine/tree/MemoryPages.java
index 00fe36a..5805460 100644
--- a/engine/src/test/java/io/hstore/engine/tree/MemoryPages.java
+++ b/engine/src/test/java/io/hstore/engine/tree/MemoryPages.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.tree;
 
 import io.hstore.engine.page.PageId;
diff --git a/engine/src/test/java/io/hstore/engine/tree/TreeTest.java b/engine/src/test/java/io/hstore/engine/tree/TreeTest.java
index af7788f..ea8cf98 100644
--- a/engine/src/test/java/io/hstore/engine/tree/TreeTest.java
+++ b/engine/src/test/java/io/hstore/engine/tree/TreeTest.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.engine.tree;
 
 import io.hstore.engine.page.ByteCursor;
diff --git a/pom.xml b/pom.xml
index b0b4b26..04b048a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -9,6 +9,20 @@
     <version>0.1.0</version>
     <packaging>pom</packaging>
     <name>HStore</name>
+    <url>https://github.com/metacoglabs/hypergraph</url>
+
+    <organization>
+        <name>Metacog Labs</name>
+        <url>https://github.com/metacoglabs</url>
+    </organization>
+
+    <licenses>
+        <license>
+            <name>PolyForm-Noncommercial-1.0.0</name>
+            <url>https://polyformproject.org/licenses/noncommercial/1.0.0/</url>
+            <comments>Commercial use needs a license from Metacog Labs: krish@getmetacognition.com</comments>
+        </license>
+    </licenses>
 
     <modules>
         <module>engine</module>
@@ -90,6 +104,18 @@
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-jar-plugin</artifactId>
                     <version>3.5.1</version>
+                    <configuration>
+                        <archive>
+                            <manifestEntries>
+                                <Implementation-Title>${project.artifactId}</Implementation-Title>
+                                <Implementation-Version>${project.version}</Implementation-Version>
+                                <Implementation-Vendor>Metacog Labs</Implementation-Vendor>
+                                <License>PolyForm-Noncommercial-1.0.0</License>
+                                <License-Contact>krish@getmetacognition.com</License-Contact>
+                                <Source>https://github.com/metacoglabs/hypergraph</Source>
+                            </manifestEntries>
+                        </archive>
+                    </configuration>
                 </plugin>
                 <plugin>
                     <groupId>org.graalvm.buildtools</groupId>
diff --git a/server/src/main/java/io/hstore/server/Bench.java b/server/src/main/java/io/hstore/server/Bench.java
index 95429c3..e53e717 100644
--- a/server/src/main/java/io/hstore/server/Bench.java
+++ b/server/src/main/java/io/hstore/server/Bench.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.server;
 
 import io.hstore.engine.EngineOptions;
diff --git a/server/src/main/java/io/hstore/server/Check.java b/server/src/main/java/io/hstore/server/Check.java
index 3e39d57..2f0c62a 100644
--- a/server/src/main/java/io/hstore/server/Check.java
+++ b/server/src/main/java/io/hstore/server/Check.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.server;
 
 import io.hstore.engine.StorageEngine;
diff --git a/server/src/main/java/io/hstore/server/Endpoint.java b/server/src/main/java/io/hstore/server/Endpoint.java
index aea7558..cb0e13a 100644
--- a/server/src/main/java/io/hstore/server/Endpoint.java
+++ b/server/src/main/java/io/hstore/server/Endpoint.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.server;
 
 import io.hstore.db.HypergraphDatabase;
diff --git a/server/src/main/java/io/hstore/server/Logging.java b/server/src/main/java/io/hstore/server/Logging.java
index e977531..ae9a18e 100644
--- a/server/src/main/java/io/hstore/server/Logging.java
+++ b/server/src/main/java/io/hstore/server/Logging.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.server;
 
 import java.io.IOException;
diff --git a/server/src/main/java/io/hstore/server/Main.java b/server/src/main/java/io/hstore/server/Main.java
index d2d0f50..260016e 100644
--- a/server/src/main/java/io/hstore/server/Main.java
+++ b/server/src/main/java/io/hstore/server/Main.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.server;
 
 import io.hstore.db.HypergraphDatabase;
@@ -28,6 +31,7 @@
 public final class Main {
 
     static final String VERSION = "0.1.0";
+    static final String NOTICE = "Licensed under PolyForm Noncommercial 1.0.0. Commercial use needs a license from Metacog Labs: krish@getmetacognition.com";
 
     private static final String USAGE = """
             usage: hstore <command> [options]
@@ -180,6 +184,7 @@ private static int run(Command command, Arguments arguments) {
             }
             case Command.Version _ -> {
                 IO.println("hstore " + VERSION + " (Java " + Runtime.version() + ")");
+                IO.println(NOTICE);
                 yield 0;
             }
             case Command.Config(Optional<Path> directory) -> {
@@ -282,6 +287,7 @@ private static int serve(Path directory, Arguments arguments) {
         Logging.configure(config);
         System.Logger log = System.getLogger("hstore.main");
         log.log(System.Logger.Level.INFO, "starting hstore {0} on Java {1}", VERSION, Runtime.version());
+        log.log(System.Logger.Level.INFO, NOTICE);
         String overrides = config.describe();
         if (!overrides.isEmpty()) {
             log.log(System.Logger.Level.INFO, "configuration: {0}", overrides);
diff --git a/server/src/main/java/io/hstore/server/RemoteEndpoint.java b/server/src/main/java/io/hstore/server/RemoteEndpoint.java
index 82d93ba..d83004b 100644
--- a/server/src/main/java/io/hstore/server/RemoteEndpoint.java
+++ b/server/src/main/java/io/hstore/server/RemoteEndpoint.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.server;
 
 import java.io.BufferedReader;
diff --git a/server/src/main/java/io/hstore/server/Server.java b/server/src/main/java/io/hstore/server/Server.java
index cf32713..7d41082 100644
--- a/server/src/main/java/io/hstore/server/Server.java
+++ b/server/src/main/java/io/hstore/server/Server.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.server;
 
 import io.hstore.db.HypergraphDatabase;
diff --git a/server/src/main/java/io/hstore/server/ServerConfig.java b/server/src/main/java/io/hstore/server/ServerConfig.java
index 088e208..f318637 100644
--- a/server/src/main/java/io/hstore/server/ServerConfig.java
+++ b/server/src/main/java/io/hstore/server/ServerConfig.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.server;
 
 import io.hstore.db.DatabaseOptions;
diff --git a/server/src/main/java/io/hstore/server/Setting.java b/server/src/main/java/io/hstore/server/Setting.java
index fb178b2..1291809 100644
--- a/server/src/main/java/io/hstore/server/Setting.java
+++ b/server/src/main/java/io/hstore/server/Setting.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.server;
 
 enum Setting {
diff --git a/server/src/main/java/io/hstore/server/Shell.java b/server/src/main/java/io/hstore/server/Shell.java
index 41ad451..33f5fd1 100644
--- a/server/src/main/java/io/hstore/server/Shell.java
+++ b/server/src/main/java/io/hstore/server/Shell.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.server;
 
 final class Shell {
diff --git a/server/src/main/java/io/hstore/server/StatementLogger.java b/server/src/main/java/io/hstore/server/StatementLogger.java
index ed4092f..21cec93 100644
--- a/server/src/main/java/io/hstore/server/StatementLogger.java
+++ b/server/src/main/java/io/hstore/server/StatementLogger.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.server;
 
 import io.hstore.db.query.Ast.Statement;
diff --git a/server/src/main/java/io/hstore/server/Tls.java b/server/src/main/java/io/hstore/server/Tls.java
index cde05e8..d8bc6c7 100644
--- a/server/src/main/java/io/hstore/server/Tls.java
+++ b/server/src/main/java/io/hstore/server/Tls.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.server;
 
 import java.io.ByteArrayInputStream;
diff --git a/server/src/main/java/io/hstore/server/WireProtocol.java b/server/src/main/java/io/hstore/server/WireProtocol.java
index feaa61c..d88aaa4 100644
--- a/server/src/main/java/io/hstore/server/WireProtocol.java
+++ b/server/src/main/java/io/hstore/server/WireProtocol.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.server;
 
 import java.io.BufferedReader;
diff --git a/server/src/main/java/io/hstore/server/studio/Assets.java b/server/src/main/java/io/hstore/server/studio/Assets.java
index dd51c16..8a6400d 100644
--- a/server/src/main/java/io/hstore/server/studio/Assets.java
+++ b/server/src/main/java/io/hstore/server/studio/Assets.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.server.studio;
 
 import java.io.IOException;
diff --git a/server/src/main/java/io/hstore/server/studio/HttpFailure.java b/server/src/main/java/io/hstore/server/studio/HttpFailure.java
index e8b5fb6..15969a3 100644
--- a/server/src/main/java/io/hstore/server/studio/HttpFailure.java
+++ b/server/src/main/java/io/hstore/server/studio/HttpFailure.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.server.studio;
 
 final class HttpFailure extends RuntimeException {
diff --git a/server/src/main/java/io/hstore/server/studio/JsonFields.java b/server/src/main/java/io/hstore/server/studio/JsonFields.java
index 3e2c641..fa8b848 100644
--- a/server/src/main/java/io/hstore/server/studio/JsonFields.java
+++ b/server/src/main/java/io/hstore/server/studio/JsonFields.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.server.studio;
 
 import io.hstore.db.value.Json;
diff --git a/server/src/main/java/io/hstore/server/studio/LoginThrottle.java b/server/src/main/java/io/hstore/server/studio/LoginThrottle.java
index c0fcac3..387171b 100644
--- a/server/src/main/java/io/hstore/server/studio/LoginThrottle.java
+++ b/server/src/main/java/io/hstore/server/studio/LoginThrottle.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.server.studio;
 
 import java.time.Duration;
diff --git a/server/src/main/java/io/hstore/server/studio/Neighborhood.java b/server/src/main/java/io/hstore/server/studio/Neighborhood.java
index f8ab4b5..a21c8bc 100644
--- a/server/src/main/java/io/hstore/server/studio/Neighborhood.java
+++ b/server/src/main/java/io/hstore/server/studio/Neighborhood.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.server.studio;
 
 import io.hstore.db.Atom;
diff --git a/server/src/main/java/io/hstore/server/studio/Sessions.java b/server/src/main/java/io/hstore/server/studio/Sessions.java
index 18e3b5b..b1dcf02 100644
--- a/server/src/main/java/io/hstore/server/studio/Sessions.java
+++ b/server/src/main/java/io/hstore/server/studio/Sessions.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.server.studio;
 
 import io.hstore.db.query.Session;
diff --git a/server/src/main/java/io/hstore/server/studio/Studio.java b/server/src/main/java/io/hstore/server/studio/Studio.java
index 021e472..8ecd12f 100644
--- a/server/src/main/java/io/hstore/server/studio/Studio.java
+++ b/server/src/main/java/io/hstore/server/studio/Studio.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.server.studio;
 
 import io.hstore.db.HypergraphDatabase;
diff --git a/server/src/main/java/module-info.java b/server/src/main/java/module-info.java
index 8b6ed7c..59e62c9 100644
--- a/server/src/main/java/module-info.java
+++ b/server/src/main/java/module-info.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 module io.hstore.server {
     requires io.hstore.db;
     requires java.logging;
diff --git a/server/src/main/resources/studio/index.html b/server/src/main/resources/studio/index.html
index 2f99ca9..2142fbf 100644
--- a/server/src/main/resources/studio/index.html
+++ b/server/src/main/resources/studio/index.html
@@ -1,4 +1,6 @@
 <!doctype html>
+<!-- SPDX-FileCopyrightText: Metacog Labs -->
+<!-- SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0 -->
 <html lang="en">
 <head>
   <meta charset="utf-8">
diff --git a/server/src/main/resources/studio/js/api.js b/server/src/main/resources/studio/js/api.js
index 8bd8e03..92e5b78 100644
--- a/server/src/main/resources/studio/js/api.js
+++ b/server/src/main/resources/studio/js/api.js
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 export class ApiError extends Error {
   constructor(status, code, message, retryable = false) {
     super(message);
diff --git a/server/src/main/resources/studio/js/app.js b/server/src/main/resources/studio/js/app.js
index 740a413..c31cc45 100644
--- a/server/src/main/resources/studio/js/app.js
+++ b/server/src/main/resources/studio/js/app.js
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 import { api } from './api.js';
 import { fill, h, icon, logo, storage, toast } from './dom.js';
 import { AdminPage } from './views/admin.js';
diff --git a/server/src/main/resources/studio/js/chart.js b/server/src/main/resources/studio/js/chart.js
index 91cd1aa..349fc1c 100644
--- a/server/src/main/resources/studio/js/chart.js
+++ b/server/src/main/resources/studio/js/chart.js
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 import { alpha, theme } from './palette.js';
 
 export class SeriesChart {
diff --git a/server/src/main/resources/studio/js/dom.js b/server/src/main/resources/studio/js/dom.js
index 3b763b8..42c69ab 100644
--- a/server/src/main/resources/studio/js/dom.js
+++ b/server/src/main/resources/studio/js/dom.js
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 const SVG = 'http://www.w3.org/2000/svg';
 
 const ICONS = {
diff --git a/server/src/main/resources/studio/js/editor.js b/server/src/main/resources/studio/js/editor.js
index 07771f5..50938ae 100644
--- a/server/src/main/resources/studio/js/editor.js
+++ b/server/src/main/resources/studio/js/editor.js
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 import { h } from './dom.js';
 
 export const KEYWORDS = [
diff --git a/server/src/main/resources/studio/js/format.js b/server/src/main/resources/studio/js/format.js
index 94cacd6..c9c4017 100644
--- a/server/src/main/resources/studio/js/format.js
+++ b/server/src/main/resources/studio/js/format.js
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 const integer = new Intl.NumberFormat(undefined, { maximumFractionDigits: 0 });
 const decimal = new Intl.NumberFormat(undefined, { maximumFractionDigits: 2 });
 const relative = new Intl.RelativeTimeFormat(undefined, { numeric: 'auto' });
diff --git a/server/src/main/resources/studio/js/graph/geometry.js b/server/src/main/resources/studio/js/graph/geometry.js
index 51d97a5..aca1f75 100644
--- a/server/src/main/resources/studio/js/graph/geometry.js
+++ b/server/src/main/resources/studio/js/graph/geometry.js
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 const SAMPLES = 10;
 const UNIT = Array.from({ length: SAMPLES }, (_, index) => {
   const angle = (index / SAMPLES) * Math.PI * 2;
diff --git a/server/src/main/resources/studio/js/graph/layout.js b/server/src/main/resources/studio/js/graph/layout.js
index 92ee4ea..8b5f911 100644
--- a/server/src/main/resources/studio/js/graph/layout.js
+++ b/server/src/main/resources/studio/js/graph/layout.js
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 const THETA_SQUARED = 0.81;
 const MAX_DEPTH = 24;
 
diff --git a/server/src/main/resources/studio/js/graph/view.js b/server/src/main/resources/studio/js/graph/view.js
index 4fd7181..2cdbfd8 100644
--- a/server/src/main/resources/studio/js/graph/view.js
+++ b/server/src/main/resources/studio/js/graph/view.js
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 import { alpha, theme, typeColor } from '../palette.js';
 import { area, contains, paddedHull, traceSmooth } from './geometry.js';
 import { ForceLayout } from './layout.js';
diff --git a/server/src/main/resources/studio/js/inspector.js b/server/src/main/resources/studio/js/inspector.js
index 89e7655..4b6ae4a 100644
--- a/server/src/main/resources/studio/js/inspector.js
+++ b/server/src/main/resources/studio/js/inspector.js
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 import { button, h, toast } from './dom.js';
 import { count, kind } from './format.js';
 import { typeColor } from './palette.js';
diff --git a/server/src/main/resources/studio/js/palette.js b/server/src/main/resources/studio/js/palette.js
index a2fa697..b2dadbf 100644
--- a/server/src/main/resources/studio/js/palette.js
+++ b/server/src/main/resources/studio/js/palette.js
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 const HUES = [
   '#6d83f2', '#f2a33a', '#2fbf8f', '#ef5f7f', '#a17cf0', '#2fb3d6',
   '#e676c2', '#8cc34b', '#ff8a4c', '#4fc4b0', '#d0a72a', '#8d9bb5'
diff --git a/server/src/main/resources/studio/js/views/admin.js b/server/src/main/resources/studio/js/views/admin.js
index 5f7d819..201f590 100644
--- a/server/src/main/resources/studio/js/views/admin.js
+++ b/server/src/main/resources/studio/js/views/admin.js
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 import { api, hql, identifier } from '../api.js';
 import { button, clear, confirmDialog, fill, h, toast } from '../dom.js';
 import { count } from '../format.js';
diff --git a/server/src/main/resources/studio/js/views/console.js b/server/src/main/resources/studio/js/views/console.js
index 9048327..5ac1c15 100644
--- a/server/src/main/resources/studio/js/views/console.js
+++ b/server/src/main/resources/studio/js/views/console.js
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 import { api } from '../api.js';
 import { button, clear, h, icon, popover, storage } from '../dom.js';
 import { HqlEditor } from '../editor.js';
diff --git a/server/src/main/resources/studio/js/views/dashboard.js b/server/src/main/resources/studio/js/views/dashboard.js
index bb1828e..b473528 100644
--- a/server/src/main/resources/studio/js/views/dashboard.js
+++ b/server/src/main/resources/studio/js/views/dashboard.js
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 import { api } from '../api.js';
 import { SeriesChart } from '../chart.js';
 import { fill, h } from '../dom.js';
diff --git a/server/src/main/resources/studio/js/views/explore.js b/server/src/main/resources/studio/js/views/explore.js
index 2221c58..981dcba 100644
--- a/server/src/main/resources/studio/js/views/explore.js
+++ b/server/src/main/resources/studio/js/views/explore.js
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 import { api } from '../api.js';
 import { button, fill, h, icon, toast } from '../dom.js';
 import { ago, count, plural } from '../format.js';
diff --git a/server/src/main/resources/studio/js/views/login.js b/server/src/main/resources/studio/js/views/login.js
index 1fbd2c5..2803881 100644
--- a/server/src/main/resources/studio/js/views/login.js
+++ b/server/src/main/resources/studio/js/views/login.js
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 import { api } from '../api.js';
 import { h, logo } from '../dom.js';
 
diff --git a/server/src/main/resources/studio/js/views/schema.js b/server/src/main/resources/studio/js/views/schema.js
index e3e20dc..01c28e8 100644
--- a/server/src/main/resources/studio/js/views/schema.js
+++ b/server/src/main/resources/studio/js/views/schema.js
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 import { button, fill, h } from '../dom.js';
 import { count, kind, timestamp } from '../format.js';
 import { swatch } from '../inspector.js';
diff --git a/server/src/main/resources/studio/studio.css b/server/src/main/resources/studio/studio.css
index 0c11e3b..e2e09e8 100644
--- a/server/src/main/resources/studio/studio.css
+++ b/server/src/main/resources/studio/studio.css
@@ -1,3 +1,6 @@
+/* SPDX-FileCopyrightText: Metacog Labs */
+/* SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0 */
+
 :root {
   --bg: #f4f5f8;
   --panel: #ffffff;
diff --git a/server/src/test/java/io/hstore/server/ServerTest.java b/server/src/test/java/io/hstore/server/ServerTest.java
index dd9ae8a..78ca155 100644
--- a/server/src/test/java/io/hstore/server/ServerTest.java
+++ b/server/src/test/java/io/hstore/server/ServerTest.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.server;
 
 import io.hstore.db.DatabaseOptions;
diff --git a/server/src/test/java/io/hstore/server/studio/LoginThrottleTest.java b/server/src/test/java/io/hstore/server/studio/LoginThrottleTest.java
index 85e4f5c..cee6ba3 100644
--- a/server/src/test/java/io/hstore/server/studio/LoginThrottleTest.java
+++ b/server/src/test/java/io/hstore/server/studio/LoginThrottleTest.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.server.studio;
 
 import org.junit.jupiter.api.Test;
diff --git a/server/src/test/java/io/hstore/server/studio/StudioTest.java b/server/src/test/java/io/hstore/server/studio/StudioTest.java
index e8319c5..eb13a49 100644
--- a/server/src/test/java/io/hstore/server/studio/StudioTest.java
+++ b/server/src/test/java/io/hstore/server/studio/StudioTest.java
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Metacog Labs
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
 package io.hstore.server.studio;
 
 import io.hstore.db.DatabaseOptions;