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 0xe3132b7701df3acd37a063f3a9d193aad2c141e3482207f7004d5886806aada3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ff2f25a-2528-4d3b-9fcb-e3498872ca2a.json and https://artists.proofprofile.net/proofs/artist/5ff2f25a-2528-4d3b-9fcb-e3498872ca2a.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 0xe20bb705cc3ecea748c587b37fb54c711f057129208e5c77d739c54e63cba401. 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/CHA012300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5490d0555a2776b96e7902101af05f8c2cd421425774a750e340dd8840093a73. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CHA012300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f79ffec0526c50762bf2e24ca686a536ea18b44e72a6b9e68300b1e7a3b083. 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/CHA012300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bc8ca54fe112b9cf58b83e84f882bb7e114d4d5d9aad295422244788f2e7e3. 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/CHA012300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54c1bd52b323d7a7df8574284916cce401f1b38ee551405c654d470de4f5519. 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/CHA012300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4948ba467b83d588f5ca5f8ff820f92f5ac78be09c5a59930f3d948cdbd08644. 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/CHA012300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54d4d2cb3ebf33162d81e886b6fedf751be2160d4e4a9efab119769dd5c60a9. 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/CHA012300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97695608b5a9ec03332051d6c9f0a1d273b02c539b82a2537b6ee138d02512cd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMEU31720063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9dd0c93332578a72db54967f5759eee7095c220aadc46ffaecc9a989b0f60e. 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/QMEU31720064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fce0a133f9d4071e8b62a87d141c556940c07ed72d1f40f3a250901bf543be6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMEU31720061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2a55896b0d1b2078d6cbac67f33d9d50c8a379608cc243b0c41d25c1785a2f. 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/QMEU31720068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61eedf2d1bb52d5313352da98b674e6e905837f09be0f0bcd2e58ffcfbb86db9. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QMEU31720070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa835c301097656b81efbf0419637a1a40647d42497353dcb780e4319aa6c55c1. 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/QMEU31720067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee53879e6ac41d10fcf9ae03fee9fde0b33316bde178fbacb5b7f0f217ac330c. 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/QMEU31720065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2448ddc6891e6f30516eeb8b7c02839a5e625cdb2b14116f1666fa09c75871. 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/QMEU31720060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf393862381962ce12bbf07e9b1924072d750beb0cf171f47442f9a70cfd563e5. 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/CHA012300980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39ab6ab46c7b37185b521a04e7ce70d582d1606359eb7d0dd4ded64cd278e19. 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/CHA012300940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f79ffec0526c50762bf2e24ca686a536ea18b44e72a6b9e68300b1e7a3b083. 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/CHA012300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bc8ca54fe112b9cf58b83e84f882bb7e114d4d5d9aad295422244788f2e7e3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CHA012300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bc8ca54fe112b9cf58b83e84f882bb7e114d4d5d9aad295422244788f2e7e3. 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/CHA012300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5490d0555a2776b96e7902101af05f8c2cd421425774a750e340dd8840093a73. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CHA012300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5490d0555a2776b96e7902101af05f8c2cd421425774a750e340dd8840093a73. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/CHA012300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c17cfc559b07fa10fbd376a8e826f1f8811810cf8fe05949e289bcfb7eac437. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CHA012100756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c5de8ec67ea54745ccdec96e49559bce470110a3fd47247a0214c29e6b03ae. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CHA012000646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a7850299a2f5627ab5b35daf266ec1076751567b628a24a68c860f8d549097. 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/CHA011900975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a10d09124561839dff10fb3f27f7954f8d2f69754a65ef82b5cbad81d8e7c73. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH4971900482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a474dc1c72199c554464859ea84d041bb0c7c3259d2c4355f7488e17856af6e. 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/QMEU31720071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fce0a133f9d4071e8b62a87d141c556940c07ed72d1f40f3a250901bf543be6. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QMEU31720061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fdc8c797ea532124907e729fca074f3966b6dca9265230d3ff1017272afbea. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBMJG1614526.