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 0x933fd7dd40ba9927588d0587d6e1223ac844d8643ee18f5d2ad9916b98c1bb3f. 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/1ec94ded-dfd2-45b3-9375-c91f0a0bd7c2.json and https://artists.proofprofile.net/proofs/artist/1ec94ded-dfd2-45b3-9375-c91f0a0bd7c2.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 0x7e51cd74e7e98e6efb56c0d2ccf7b3535583898229704d9ef35f38752097005e. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/ES5018951000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a003a79aa0df819dd205c12427e13303532e0c5e40e49329ad559a2a74d787d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ES6049910302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc701aca504e8fb31689acee2d0738d2be5368875721948d29bcd00ae04e497. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ES6049910305.
Una epoca de grabaciones accidentales (disco libro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7394fd81acc68124098946a29e7b46856ddf9bd44d4b7a925238db84236b9af7. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ES5010300131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd15c2f8199f61f52db3c8b5383ff39f8e496e2d01f98d48cdc324021b156fd7. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:36:37Z), 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/ES5010300132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc573915ff21d766a01923546b85c581dba037bc35a50b76aac7083ed9f66932d. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:31:24Z), 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/ES5010601127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa53ec14f416fde237036c54c580a0951e803da56473f5e7af18273f37677b69. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/ES5150700519.