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 0x221afd0876007b9da76beb78e99041ccd795855085ca1768110711dcca3f26b8. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d3eb2b60-47b5-4ede-80cb-9183710c8b33.json and https://artists.proofprofile.net/proofs/artist/d3eb2b60-47b5-4ede-80cb-9183710c8b33.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 0xaf502f0e34903d711d26c7c1bfb615dfbef7d5dc13f1f8624d1b26e05d1ec863. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTLA2549317.
Te Exalto, Señor (Alabanza Poderosa para Dios!)
Canto de entrada de misa con Mariachi Católico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fea3acd18471d081e06ffed84a6d70f98691632beaca5b14846c0f9ece7e2c. 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/QZDQH2533970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82533e972b07e79108d72585c7f368ddb8399602108303891c7b2fb337a334a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZDQH2533971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe202bbde9005d184260c3fb2e6648bcbc605c565532ec14c8bafa9fc4ced50a4. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:03:35Z), 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/QZDQH2533972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a1a41b2f4a085a33392386f61b39940e06e1ac8420dd3f64afad9b9b805399. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:18:55Z), 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/QZDQH2533973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374df0447e06213ad78d5a5690bf69aa4b5d8798b9f5768af561d78c4ae22b93. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:36:23Z), 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/QZDQH2533974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d97b4231bb409377c01b60d00b328ff92f211316003eaa1eb0e5b7b65daa6f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZDQH2533975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de1d43546f847b10722606eabfb936e734876e1831779649289063b5f73bb5b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZDQH2533976.
SALMO CANTARÉ ETERNAMENTE LAS MISERICORDIAS DEL SEÑOR (Salmo 88)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116776fbd2f93d22cec10b97b6ca0a381ecb003584ac28475fb22d6de0e3d53b. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:02:00Z), 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/QZDQH2533977.
EN CUARESMA “Honor y gloria a ti, Señor Jesús”
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7731356676bb451b45fc2db1a449bcac556eb069c13d273272f30d4e0a3c05. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:45:26Z), 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/QZDQH2533979.