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 0x1055f27dd7ce4e9f652f4065cdf0ee1fdf98597eb04a0fa15d817d8c77d063be. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/024135f6-1e6f-4068-8a96-da6309f4ffaf.json and https://artists.proofprofile.net/proofs/artist/024135f6-1e6f-4068-8a96-da6309f4ffaf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Música de Moros y Cristianos - Paquito el Chocolatero
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 0x73b234e999553292292a51bc9bce4c919935e4108e975b40458d7387b93a873d. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:51:12Z), 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/ESAAI0233759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9d1b293ef2ae5941ee0a70b09c688d22baef40ac8a7e4924bb8629c2929a60. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ESAAI0233761.
Música de Moros y Cristianos - La Nostra Música (Vol. 11)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa1297987a0edc0bfa3b97ea28b0a062c70d8ab56a907b943a54e601ccbd528. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ESAAI0233185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe190ea0c1ca5cc0f59d8a32dbd960281f0d815a57f0233f30cc71e65fb778b40. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ESAAI0233194.
Música de Moros y Cristianos - Soc Fester (Vol. 9)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838e5109267529bddd85ade4e39aafff98d549b6b5066332a21769389f020c66. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ESAAI0233459.
Moros y Cristianos - Música de José Mª Valls Satorres (Vol. 5)