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 0x94cc22a62445bb3e0dccc3c9e67656c7687ef691cffafc1902d918ec87f2608c. 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/7250fe0d-d50b-4e3b-b457-7caa06686747.json and https://artists.proofprofile.net/proofs/artist/7250fe0d-d50b-4e3b-b457-7caa06686747.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Un Planeta de Movidas - Versión 1994 Remasterizada
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 0x60c67c6ae9da65df035271fc100c9f7187492c8334aacd3c0ac5b6caee51dadd. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/ES16I1700011.
Música Galáctica - Versión 1994 Remasterizada
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4d2284d88d8a3a30d342e3ef06246affcb414bbfdda94ae3297c230f5f0a19. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/ES16I1700013.
Pasen y Desfasen - Versión 1994 Remasterizada
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab12138c0e13ac5fd9f3e7b86e786f0a7b6d4ef3e4e672b2344df14f170da03. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/ES16I1700014.
Botas de Botar - Versión 1994 Remasterizada
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe270e7fd9eb86e0c5ba3f74604dec105415d3eb1c943d5bf84b71ef2617c4166. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:57:54Z), 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/ES16I1700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618dd187527bf867d7654c5b381d83bc4ddbeed6b55d6e14ad5a00252248a684. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ES5051400714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fb003bf866c8e50c00765c4cf27538e2f835126597b99dbcb68f83e570b7bf. 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/ES16I1700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9392444b4d5c487252f25ddb4ed3d6c51781f47587260fd5da4ac9c65700665b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ES16I1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09dc7bb8806a87147eab29cb9de960483a079bce6d01485da65eeec7bded922e. 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/GBKQU2336906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a93ceffa5e024efacc74da0f3e537e84aa25233aa15df7edef1353caee1b4bf. 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/DEPI82432719.