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 0x1890e466b633e71f53571afd65dea4ac9b7bb01102e892d5bfa2b6f2523e85b6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af3a8bd4-376f-4c8c-9707-1c7174cd0f39.json and https://artists.proofprofile.net/proofs/artist/af3a8bd4-376f-4c8c-9707-1c7174cd0f39.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 0x1a98882cd51ff0151702e0aa925382f2676dc8d55507b84174aba1b0aca2a282. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/QZMEP2170995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f8c80ff50defe8854e79de40f411cd3401e1b4f2bd6ad6168705b27b1a3652. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:28:43Z), 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/QZRP42117331.
La Continuacion Del Ochenta Y Sies - En vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefeeaae02e2ad2399af8d00cef9dbd1f7918a5294cff43c4f8113e159e6a2061. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:16:42Z), 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/QZK6G2340201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75557f0af84089b51993195de41334382d6ac0ce7da36c50f868ecd8c6186a26. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNWR2383575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e199abf6ee70b8399554dc4b5a055dd2cf6b3b2646fff5a017b1a68c9bf51c. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:27:45Z), 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/QZNWR2383576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25dff7308a6dbb9eb955b75c2cf54f1f1c57465a2f89cfaa8e6a38da9721e05. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:44:19Z), 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/QZNWR2383583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0005539215fc681e3884492703ad627583d74caa385d812a72c9bb10db58cc9. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:08:47Z), 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/QZES92406515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01d1cac7c190c486543944c094dca4760f50a085d6d7456709300d3298c3418. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZES92406516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f06fde7f5bf9bae8afb123989d9a7c1b4b329390b9585932889d7bce9e89ffc. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:49:48Z), 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/QZES92406520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f88e1964c526db4d6a84f62390f03e2357b07aa5639143f7ea496bd75eb63e. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:47:12Z), 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/QZES92406523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e40c18363b38a8b51ddeb39f4521ca932df0a3470c46e0b0d87706c413ce975. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZES92406524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f2a731dc49024afd5728dcb02769ba31198f132515b8ab42a8cdf71324d805. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:20:54Z), 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/QZTBA2459871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f699506d131e9c8864ccf65a1449780dcb867b25876c50bf4c29bb1093e608. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZZ792476526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4e51837a69974b095f81c6bf97d61fcffdb0493ed97dd412228e6e2a0ecedf. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:09:41Z), 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/QZZ792476528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1121f5653e9dc9a801ba261eb3839e02378fa3008c9932517279137c135e2984. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZES52554766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f70e8737f926057a594182ffb73a1f7dc0aeee9cb7af8b3ec79db0d3c1fd9f3. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZES52554767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7275fd24fe85e8ccc9f9d9412a69697e04530995a07c073057fe3274c54b8c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZES52554768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97268fa0b4c768b0af3b64b9632f7d583db3752e64e73afcd616b7b03897c95c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZES52554770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b61d7637617e0a027d2f5bc104600d22b9d613f73d147e2fe7e9c8662a10e0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHN72581825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7506da6ac47e630767158d1113326c48cbcfa799753de864482fa4fff3ad58. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHN72581826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856c9ffe3dc7309b423157baa98692bb7af54bde1caf40f5efb10e4154cb0dbd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNWT2508808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4e3ba1658f3d82867ac576d8baa015f565ef037c7b7c952bb450093923b4b5. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZRP42564368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d328d206c0b1cda6cd8822e22df5b3651d7046dd95e471f744d751b20acbf24. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZRP42564369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05663a67aa964f9240fbacedae2123e48efee967aa3d6457f967791d6543ba9. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZRP42564370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d9bb9818417af4dbe704a6f5187c9b3fe2f9516629a383a67ff552b6e30725. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZRP42564371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2ebe9a33bff526fb61d27b6183bced51323abd75c361ec1e5a957dda409add. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZRP42564372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71846953ed095e0106507165c9607c8b144a9fcc2d9f4d9e85395f2d1185e40. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZRP42564373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9b93e26ee76435ed3f1ce8e2ab675ebbb254faaa64e575888ab7fa09939eb1. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QT3F62548254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8a3db7a0f6d9b2c9be6f4e3ed83fa25b2403f7f18f745a8c7bdd087c4c60fc. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USUM72500087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8a3db7a0f6d9b2c9be6f4e3ed83fa25b2403f7f18f745a8c7bdd087c4c60fc. 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/USUM72500087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c424422a2f28f611f63b429fcef705fe5628e98bf2535b2924a1fa1bac0df7. 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/TCAHL2320549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2713f06d32a04825761ec6b89d159128de7061da09e93882c8944f014e44efe. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZDQH2254631.
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 0x8606bc26a915b573079e4c8d9e5c623c220da9828fe6175d04664b9f26acbb16. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/USUM72500115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10a23da439e1d3e5b9dbadd83e2e32b588626004179720a77ac7f45bace5753. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZDQH2254630.