Brigadier David Arthur Kennedy William Block (13 June 1908 – 2001) was a British Army officer who, during the Second World War, won a Military Cross when commanding "C" Battery of the Ayrshire Yeoman
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c8c84f098832b2e8bbe0ed4933e40fee0ec3bd979defa185d153463224c4ea. Chain 2 (Bitcoin): anchored in block 953618 (2026-06-14T09:16:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c67b8fb-c3f6-4842-8d8a-3ce4fbbe15fc.json and https://artists.proofprofile.net/proofs/artist/1c67b8fb-c3f6-4842-8d8a-3ce4fbbe15fc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e51bee06533b1ecf3c4b45b73478dfb2895a6baf284e5daae9a4b9683c9e9c5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES92456195.
are you going to miss me? - instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd3917d015df4e07d58b93949334dcce576c74542c5bdf727a9f4617268bed3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES92456196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde689cfbedb117f4b841028b9753fd4efca4cb24064c3762762fda95646cbebb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMER2366002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca412960b7ac749f447889f73f42ede1de4326c7308b45b73e0abb47398b00c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ72444026.
Out of the Blue Sky - DANCE MIX INSTRUMENTAL
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a008f3da3d064d4a9342f8db0369b87ab25cddea5b5c67f55e21c2b0b3d254. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ72444027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde689cfbedb117f4b841028b9753fd4efca4cb24064c3762762fda95646cbebb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMER2366002.