The Gibson Brothers are a French musical group, originally from Martinique, who had their greatest success during the disco boom of the late 1970s. Their best known hit singles included "Cuba" and "Qu
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfc5e699cd820259096d71c8e37bded23afc4939cf332a2c5d3c7b38f72b650. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6d1b98d4-be6b-454a-93ca-9eb3e4d243cf.json and https://artists.proofprofile.net/proofs/artist/6d1b98d4-be6b-454a-93ca-9eb3e4d243cf.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7c39852ebd52d3ab748b9e4b78bb60241e82870de2ad57395d73a696efbd2a. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/USCO90950604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28230439e84b68496310095ea016ad65f8fa2b3d1ae6de08cc2089e33a465dad. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USCO91359902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5805228a478de1b0efebfe94fa65ad8f0a9d7cad8116337c24a6ea103c0d1641. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USCO91359906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab82342003b43c044e5be8518f0fcb620090847ab9923aeaf4796d170a0e2893. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/USRO21600919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1108e736541025ad7f7372177857629d71ca39495216c5eef8c103272fa760. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USRO21600921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7d140d931e29520ab176eacbf9451e229c5f7b50df20c7acf1d59e7df79052. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/USRO21600923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7054dd318028b75f0c0908b9e50653ccb21cd118e57fbb1a0c6c3648e68e6c87. Chain 2 (Bitcoin): anchored in block 957633 (2026-07-12T00:19:47Z), 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/QZ6SA1800043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2463b77d1d3f9ed6a7890deab69fee2ee5d4c6788fb7bcc593d156a1acc6d77. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZ6SA1800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b1a8d7f8edd75071c74f0d165d205da313fa0cb9a01ebb08e0f8f1661100a2. 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/USSH50387692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a98529c6b7934ecada0f2fb0456972cb8e4129222ac23353a90bdec7280da8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USYJA1800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3d556b6e28ea44da9ac2f6b2df6a0e3e9235677b6945126f05e2e51f9232de. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USSH50500430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e33dcf64a62fff28e79408d075c7d3bf2a0134f341850fb215e002f0e37cd7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZR8K2360012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f915a49489bcaf2e36e5feacc4f1b96a39ed90b14865b08b9f5f2fed425b8d4. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/USSH50387694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb134f453e372a43a3973d4562de3802d604108036e6dbbf5b5c39a560812eef2. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/USSH50800838.