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 0x1c974190d5b3698fc46df62be2ad319ad8e64692133073599501d885a9d05d98. 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/04c3a64d-6180-4de6-80f6-92e8fbb2cf17.json and https://artists.proofprofile.net/proofs/artist/04c3a64d-6180-4de6-80f6-92e8fbb2cf17.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 0xa19bbaade00408251f78aa3c9c9e86df3c4760240ef229ae48c8a0a640d0a3c9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM3DF2202661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237896822e2ef58f625a51ed4dfdc31882ccd29226ecc00fffa5669dde6a4a5a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM7282461345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956ffa7726cf185b99732b8ce88c085a619dcbfce1f5df61adfbcc0fded5a778. 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/QZNWZ2328235.
Fiesta en el Desierto - Remix Artury Pepper
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445c87720986e92f5899c24868e71e8e4a8a5d9eae5e6e5e5246fac2c4db1285. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/QZNWZ2328236.
Fiesta en el Desierto - Remix Gui Brazil
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea32847b8b947519428903741339adb16dd16f1ade96ceaa126f631308c178d. 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/QZNWZ2328238.
Fiesta en el Desierto - Remix DJ ADOS Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213bb178f9cee5beaf275aa68f0d8a81061f74632febb8fea493185b5a6ed256. 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/QZNWZ2328237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19bbaade00408251f78aa3c9c9e86df3c4760240ef229ae48c8a0a640d0a3c9. 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/QM3DF2202661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2042a200b6fc96d5f0ec7ff7a52a4a242a6e0fce79157cde39ea8dc0f31cab5f. 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/QM6MZ2008246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdb289fef87824edb66e38d399189aacd0a7f3dc58aa6ba8bf92ab4b6cc9556. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAHN2308559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc092a008067a5a2084f5ef7d41fdd387176bca454a1c1b8b30be5e963fa198ac. 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/USANG2291231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f9528e680796018afd95831a2702a763f317975130f8a5fb17c6d8d755a5e7. 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/ITS582005522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c68775c793c5a53568fe2cd3f1f0d690f24872c959c84a930025c31fce31bdc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ2J21506923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5ef001724203e6aac78e74e4ac0f683ced00c11dd20dd1c362a9db6f21c302. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ2J21507193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa499c08bcd63dad1a0d3b3a4af7c929d9ea5946e9e5eaaae28649ca13c029e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ2J21506521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb720ca007273b0a82b564d246ad4747b90dd7f46ddcdb0b811338f38f626ea34. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ2J21510156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dfd32977b32e9f080ef77f1b3301658e9846c3d0154647077e70589dc2d73e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ2J21502593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5b9e07ebf872271af092a3ad01eec25d1eb594c4b51f6ef43dd3b30d9646c1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ2J21513755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536a5bf61099697405cf290092f55a5d22bd1e30d8bd469dc6a723335cd2974e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ2J21506278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c68775c793c5a53568fe2cd3f1f0d690f24872c959c84a930025c31fce31bdc. 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/QZ2J21506923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb362b602dfb280c3fbfce9658427a340d5c3bde7e84cd67ddbc653b9dc578b1f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ2J21505520.