diff --git a/examples/cactus-check-connection-ethereum-validator/package.json b/examples/cactus-check-connection-ethereum-validator/package.json
index 2db7a8d36c..59709083c4 100644
--- a/examples/cactus-check-connection-ethereum-validator/package.json
+++ b/examples/cactus-check-connection-ethereum-validator/package.json
@@ -1,6 +1,7 @@
 {
   "name": "@hyperledger/cactus-examples-check-connection-ethereum-validator",
   "version": "2.0.0-alpha.1",
+  "license": "Apache-2.0",
   "private": true,
   "scripts": {
     "start": "node ../../dist/packages/cactus-cmd-socketio-server/src/main/typescript/routing-interface/www.js",
diff --git a/examples/cactus-example-electricity-trade/tools/periodicExecuter/package.json b/examples/cactus-example-electricity-trade/tools/periodicExecuter/package.json
index e7718664d3..514e2e7cae 100644
--- a/examples/cactus-example-electricity-trade/tools/periodicExecuter/package.json
+++ b/examples/cactus-example-electricity-trade/tools/periodicExecuter/package.json
@@ -1,6 +1,7 @@
 {
   "name": "periodicExecuter",
   "version": "0.0.1",
+  "license": "Apache-2.0",
   "private": true,
   "scripts": {
     "build": "npm run build-ts",
diff --git a/examples/cactus-example-electricity-trade/tools/transferNumericAsset/package.json b/examples/cactus-example-electricity-trade/tools/transferNumericAsset/package.json
index 9f8263ca6a..b61f5e4013 100644
--- a/examples/cactus-example-electricity-trade/tools/transferNumericAsset/package.json
+++ b/examples/cactus-example-electricity-trade/tools/transferNumericAsset/package.json
@@ -1,6 +1,7 @@
 {
   "name": "transferNumericAsset",
   "version": "0.0.0",
+  "license": "Apache-2.0",
   "private": true,
   "scripts": {
     "build": "npm run build-ts && npm run copy-static-assets",
diff --git a/examples/cactus-example-tcs-huawei/tools/periodicExecuter/package.json b/examples/cactus-example-tcs-huawei/tools/periodicExecuter/package.json
index e7718664d3..514e2e7cae 100644
--- a/examples/cactus-example-tcs-huawei/tools/periodicExecuter/package.json
+++ b/examples/cactus-example-tcs-huawei/tools/periodicExecuter/package.json
@@ -1,6 +1,7 @@
 {
   "name": "periodicExecuter",
   "version": "0.0.1",
+  "license": "Apache-2.0",
   "private": true,
   "scripts": {
     "build": "npm run build-ts",
diff --git a/examples/cactus-example-tcs-huawei/tools/transferNumericAsset/package.json b/examples/cactus-example-tcs-huawei/tools/transferNumericAsset/package.json
index 5d0ac2231f..e17b1b94bc 100644
--- a/examples/cactus-example-tcs-huawei/tools/transferNumericAsset/package.json
+++ b/examples/cactus-example-tcs-huawei/tools/transferNumericAsset/package.json
@@ -1,6 +1,7 @@
 {
   "name": "transferNumericAsset",
   "version": "0.0.0",
+  "license": "Apache-2.0",
   "private": true,
   "scripts": {
     "build": "npm run build-ts && npm run copy-static-assets",
diff --git a/examples/test-run-transaction/package.json b/examples/test-run-transaction/package.json
index 746d9db363..3d9c47298c 100644
--- a/examples/test-run-transaction/package.json
+++ b/examples/test-run-transaction/package.json
@@ -1,5 +1,6 @@
 {
   "name": "test-run-transaction",
+  "license": "Apache-2.0",
   "private": true,
   "scripts": {
     "start": "node ../../dist/packages/cactus-cmd-socketio-server/src/main/typescript/routing-interface/www.js",
diff --git a/package.json b/package.json
index 6e8826eddc..dcd442ebb2 100644
--- a/package.json
+++ b/package.json
@@ -1,5 +1,6 @@
 {
   "name": "@hyperledger/cactus",
+  "license": "Apache-2.0",
   "private": true,
   "description": "Root project for Cactus which contains all core components and plugins developed by the project.",
   "workspaces": {
diff --git a/packages-python/cactus_validator_socketio_indy/testcli/package.json b/packages-python/cactus_validator_socketio_indy/testcli/package.json
index 8b5b41098f..a007de9995 100644
--- a/packages-python/cactus_validator_socketio_indy/testcli/package.json
+++ b/packages-python/cactus_validator_socketio_indy/testcli/package.json
@@ -1,5 +1,6 @@
 {
   "name": "testcli",
+  "license": "Apache-2.0",
   "version": "0.0.0",
   "private": true,
   "dependencies": {
diff --git a/packages-python/cactus_validator_socketio_iroha/testcli/package.json b/packages-python/cactus_validator_socketio_iroha/testcli/package.json
index d64cd4668a..45b42b4288 100644
--- a/packages-python/cactus_validator_socketio_iroha/testcli/package.json
+++ b/packages-python/cactus_validator_socketio_iroha/testcli/package.json
@@ -1,5 +1,6 @@
 {
   "name": "testcli",
+  "license": "Apache-2.0",
   "version": "0.0.0",
   "private": true,
   "dependencies": {
diff --git a/packages/cactus-cmd-api-server/src/test/resources/cactus-dummy-package/package.json b/packages/cactus-cmd-api-server/src/test/resources/cactus-dummy-package/package.json
index 24e2e2f91c..72b49a239a 100644
--- a/packages/cactus-cmd-api-server/src/test/resources/cactus-dummy-package/package.json
+++ b/packages/cactus-cmd-api-server/src/test/resources/cactus-dummy-package/package.json
@@ -1,6 +1,7 @@
 {
   "name": "@hyperledger/cactus-dummy-package",
   "version": "2.0.0-alpha.1",
+  "license": "Apache-2.0",
   "description": "Dummy package for testing.",
   "main": "index.js"
 }
\ No newline at end of file
diff --git a/packages/cactus-plugin-ledger-connector-fabric-socketio/src/test/typescript/unit-test/package.json b/packages/cactus-plugin-ledger-connector-fabric-socketio/src/test/typescript/unit-test/package.json
index 8083b47f5d..8523041d5a 100644
--- a/packages/cactus-plugin-ledger-connector-fabric-socketio/src/test/typescript/unit-test/package.json
+++ b/packages/cactus-plugin-ledger-connector-fabric-socketio/src/test/typescript/unit-test/package.json
@@ -1,6 +1,7 @@
 {
   "name": "validatorDriver",
   "version": "0.0.0",
+  "license": "Apache-2.0",
   "private": true,
   "scripts": {
     "build": "npm run build-ts && npm run copy-static-assets",
diff --git a/packages/cactus-plugin-ledger-connector-go-ethereum-socketio/src/test/typescript/unit-test/package.json b/packages/cactus-plugin-ledger-connector-go-ethereum-socketio/src/test/typescript/unit-test/package.json
index 261691e33d..15d0d131cc 100644
--- a/packages/cactus-plugin-ledger-connector-go-ethereum-socketio/src/test/typescript/unit-test/package.json
+++ b/packages/cactus-plugin-ledger-connector-go-ethereum-socketio/src/test/typescript/unit-test/package.json
@@ -1,6 +1,7 @@
 {
   "name": "validatorDriver",
   "version": "0.0.0",
+  "license": "Apache-2.0",
   "private": true,
   "scripts": {
     "build": "npm run build-ts && npm run copy-static-assets",
diff --git a/tools/custom-checks/check-pkg-licenses.ts b/tools/custom-checks/check-pkg-licenses.ts
new file mode 100644
index 0000000000..8a1d9b779a
--- /dev/null
+++ b/tools/custom-checks/check-pkg-licenses.ts
@@ -0,0 +1,84 @@
+import fs from "fs-extra";
+import path from "path";
+import { fileURLToPath } from "url";
+import { globby, Options as GlobbyOptions } from "globby";
+import { RuntimeError } from "run-time-error";
+import { isStdLibRecord } from "./is-std-lib-record";
+
+export interface ICheckPkgLicensesRequest {
+  readonly argv: string[];
+  readonly env: NodeJS.ProcessEnv;
+  readonly expectedLicenseSpdx?: string;
+}
+
+export const DEFAULT_EXPECTED_LICENSE_SPDX = "Apache-2.0" as const;
+
+/**
+ * @returns An array with the first item being a boolean indicating
+ * 1) success (`true`) or 2) failure (`false`) and the second item being an
+ * array of strings which contain all the errors found (if any).
+ */
+export async function checkPkgLicenses(
+  req: ICheckPkgLicensesRequest,
+): Promise<[boolean, string[]]> {
+  const TAG = "[tools/check-pkg-licenses.ts]";
+  const __filename = fileURLToPath(import.meta.url);
+  const __dirname = path.dirname(__filename);
+  const SCRIPT_DIR = __dirname;
+  const PROJECT_DIR = path.join(SCRIPT_DIR, "../../");
+  console.log(`${TAG} SCRIPT_DIR=${SCRIPT_DIR}`);
+  console.log(`${TAG} PROJECT_DIR=${PROJECT_DIR}`);
+  if (!req) {
+    throw new RuntimeError(`req parameter cannot be falsy.`);
+  }
+  if (!req.argv) {
+    throw new RuntimeError(`req.argv cannot be falsy.`);
+  }
+  if (!req.env) {
+    throw new RuntimeError(`req.env cannot be falsy.`);
+  }
+
+  const expectedLicenseSpdx =
+    req.expectedLicenseSpdx ?? DEFAULT_EXPECTED_LICENSE_SPDX;
+
+  console.log(`${TAG} req.expectedLicenseSpdx=${req.expectedLicenseSpdx}`);
+  console.log(
+    `${TAG} DEFAULT_EXPECTED_LICENSE_SPDX=${DEFAULT_EXPECTED_LICENSE_SPDX}`,
+  );
+  console.log(`${TAG} Concluded expectedLicenseSpdx=${expectedLicenseSpdx}`);
+
+  const globbyOpts: GlobbyOptions = {
+    cwd: PROJECT_DIR,
+    ignore: ["**/node_modules"],
+  };
+  const DEFAULT_GLOB = "**/package.json";
+
+  console.log(`${TAG} Glob pattern=%s - options=%o`, DEFAULT_GLOB, globbyOpts);
+  const pkgJsonPaths = await globby(DEFAULT_GLOB, globbyOpts);
+  console.log(`${TAG} Glob found %o package.json files.`, pkgJsonPaths.length);
+
+  const errors: string[] = [];
+  const checks = pkgJsonPaths.map(async (pathRel) => {
+    const filePathAbs = path.join(PROJECT_DIR, pathRel);
+    const pkgJson: unknown = await fs.readJSON(filePathAbs);
+    if (typeof pkgJson !== "object") {
+      errors.push(`ERROR: ${pathRel} package.json cannot be empty.`);
+      return;
+    }
+    if (!pkgJson) {
+      errors.push(`ERROR: ${pathRel} package.json cannot be empty.`);
+      return;
+    }
+    if (!isStdLibRecord(pkgJson)) {
+      return;
+    }
+    const { license } = pkgJson;
+    if (license !== expectedLicenseSpdx) {
+      const eMsg = `${TAG} Error: ${pathRel} has incorrect license SPDX. Expected ${expectedLicenseSpdx}, got ${license} instead.`;
+      console.log(eMsg);
+      errors.push(eMsg);
+    }
+  });
+  await Promise.all(checks);
+  return [errors.length === 0, errors];
+}
diff --git a/tools/custom-checks/check-sibling-dep-version-consistency.ts b/tools/custom-checks/check-sibling-dep-version-consistency.ts
index 1f0ab2cc5a..a6ae25ea10 100644
--- a/tools/custom-checks/check-sibling-dep-version-consistency.ts
+++ b/tools/custom-checks/check-sibling-dep-version-consistency.ts
@@ -63,7 +63,7 @@ export async function checkSiblingDepVersionConsistency(
 
   const pkgJsonPaths = await globby(DEFAULT_GLOB, globbyOpts);
   console.log(`${TAG} package.json paths: (${pkgJsonPaths.length}): `);
-  
+
   const lernaJsonPathAbs = path.join(PROJECT_DIR, "./lerna.json");
   console.log(`${TAG} Reading root lerna.json at ${lernaJsonPathAbs}`);
   const lernaJson = await fs.readJSON(lernaJsonPathAbs);
diff --git a/tools/custom-checks/package.json b/tools/custom-checks/package.json
index aead43de36..2024f0601d 100644
--- a/tools/custom-checks/package.json
+++ b/tools/custom-checks/package.json
@@ -1,3 +1,4 @@
 {
+  "license": "Apache-2.0",
   "type": "module"
 }
\ No newline at end of file
diff --git a/tools/custom-checks/run-custom-checks.ts b/tools/custom-checks/run-custom-checks.ts
index 770e1b4524..452f8354da 100644
--- a/tools/custom-checks/run-custom-checks.ts
+++ b/tools/custom-checks/run-custom-checks.ts
@@ -1,6 +1,7 @@
 import esMain from "es-main";
 import { checkOpenApiJsonSpecs } from "./check-open-api-json-specs";
 import { checkPackageJsonSort } from "./check-package-json-sort";
+import { checkPkgLicenses } from "./check-pkg-licenses";
 import { checkSiblingDepVersionConsistency } from "./check-sibling-dep-version-consistency";
 import { checkPkgNpmScope } from "./check-pkg-npm-scope";
 
@@ -50,6 +51,11 @@ export async function runCustomChecks(
     overallSuccess = overallSuccess && success;
   }
 
+  {
+    const [success, errors] = await checkPkgLicenses({ argv, env });
+    overallErrors = overallErrors.concat(errors);
+    overallSuccess = overallSuccess && success;
+  }
   if (!overallSuccess) {
     overallErrors.forEach((it) => console.error(it));
   } else {
diff --git a/tools/package.json b/tools/package.json
index 472002573e..fc60e76c75 100644
--- a/tools/package.json
+++ b/tools/package.json
@@ -1,3 +1,4 @@
 {
+    "license": "Apache-2.0",
     "type": "module"
 }
diff --git a/weaver/common/policy-dsl/package.json b/weaver/common/policy-dsl/package.json
index db27abf8a6..d4a5f95b9a 100644
--- a/weaver/common/policy-dsl/package.json
+++ b/weaver/common/policy-dsl/package.json
@@ -23,7 +23,7 @@
         "url": "git@github.ibm.com:dlt-interoperability/policy-dsl.git"
     },
     "author": "",
-    "license": "ISC",
+    "license": "Apache-2.0",
     "devDependencies": {
         "ava": "4.3.3",
         "jest": "29.6.2"
diff --git a/weaver/docs/package.json b/weaver/docs/package.json
index 14dd132413..f9c06e3e12 100644
--- a/weaver/docs/package.json
+++ b/weaver/docs/package.json
@@ -1,6 +1,7 @@
 {
   "name": "weaver-dlt-interoperability",
   "version": "0.0.0",
+  "license": "Apache-2.0",
   "private": true,
   "scripts": {
     "docusaurus": "docusaurus",