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 0x0853172e2c12d6cf8a4bc138f90cfc02a0d27590f4a62237fe658460261510ca. 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/6aaacd94-f89b-415b-999c-f3c0dde4a2b0.json and https://artists.proofprofile.net/proofs/artist/6aaacd94-f89b-415b-999c-f3c0dde4a2b0.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 0xb834e23709fbb804bfd2393f98cb827beec68499e76df51661775c72728216a8. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ES5022101909.
No Me Quieras Como Amigo (Remasterizado 2021)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0bdb9aa0e13bcc52d518f21c3ed875709468e2f03c785ee861eb1109611476. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ES5022101912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0bdb9aa0e13bcc52d518f21c3ed875709468e2f03c785ee861eb1109611476. 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/ES5022101912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0141251c10be3c6e295fba49718f8f25ec4268bbd044d5e1721924c13c3eae. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/ESA011221318.
Canciones inolvidables (Select-top Vol. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b027341918ca978c714e66ea78dcdf355e3effca2f48b30eba0e26f8a35b7f. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/ESA011222372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd8f78bf6ad9096cacd447db3601c69e8f404c611c2e74bb4424124cb4f8a51. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/ESA011222380.
40 Años de canciones de kilómetros de anécdotas y tantas cosas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843415e1215f27406f3cb0ed11d0ff33ecc505c4e94e0446ffeebf80c2105af2. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ESA011403469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06dcd74160e1d14a0390bdaf2b6adf0a2e96c30a5990ea0b1b2b4e674330c132. 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/ES41A0800043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc40cfe5ae982339ed6286baff8f8dd460c9a25f54937842c83efd05bc543fa. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/ES41A0800155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49e55b948273503307f9feef941f8dfea346dc769f18736f92046ccb922adf3. 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/QMFME1427182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb833ee056aec5e81d30c5b905c45a7ee19164ff1dc0fb6ed10740ada3b58c0. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/ES41A0800169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9c32ba1654f9ca77fd3c79ec58b291dcb88799cfa24a68e7485d41259dec81. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/ES41A0800134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d997a7823bc5bcbb8df12262a60df42c5b27e4c3132f7753836b894e0023759. 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/ES41A0800154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f795f4d282627e95e1e6b6e7b01ebf998019b61d7b7ef12bb250d34b612ab2. 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/ES41A0800361.