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 0xd8dca12e9a20e95e5a6ef0e2ee4482607719bff4c6a002ae4db28a513ba27ea2. 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/480cfb8a-a370-4e61-8c1e-0ab80c517845.json and https://artists.proofprofile.net/proofs/artist/480cfb8a-a370-4e61-8c1e-0ab80c517845.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 0xb00252c14e450d10e28b91e371dbdefe1acf451346dcb4809bec752eeb62abaa. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QZNJX2146153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25907f94f5aa2b4ddadfc1af0f13f45a21955717103eac7ea5fb5cbb5bd2906f. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/ESA012181283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd60787c8ef0eddf182a81772dfb6bcc0a983efabdbacc7006a4e20f4d122e5. 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/ESA012196304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1e0855485710e9b21c20b6c3d87750b222375fd04a16c3be5c5bdd7913c00e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ESA012196308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1669fee82e223010494a33327833c9d01379b14e24741cd6c4119d2c918c602. 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/QZPJJ2200252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7020a489bd236cf25e5d693ab96ff8c986faf685ba38ff87178c33b6baa0d1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZPJJ2200256.
Medley: Tres Lagrimas - Guayabo Zarandeao - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0774df61834cc0f3617b6397cde4bb06dd09ec7997698ef9ce8dfc5c3175196b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZPJJ2200262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64acdd00582c8450b15e14e2aad8b20584bde7a1b76dcc2a4d94ce98a1bdb667. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZPJJ2200267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017818c2e272ccecfe51884175ab3e9afc15c6c7f1f3c9a0e6468de1ddcab31b. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/ESA012181285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd60787c8ef0eddf182a81772dfb6bcc0a983efabdbacc7006a4e20f4d122e5. 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/ESA012196304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36928691243f9f59d789b8c98502a93596c9c70b63c14ebb6233e2716692efb2. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/ESA012196305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1e0855485710e9b21c20b6c3d87750b222375fd04a16c3be5c5bdd7913c00e. 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/ESA012196308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec53cbf88296a498dcbc514574482eaaaa1eaa28acd28bd1c3f96dc3430bb2a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ESA012196312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f575b928c5bb858e4f6d0e7a06851096bfdb5a48d91b587ecc8b0e7d0c8874. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHZ52175216.
Guayabo Zarandeao (Va Colgando De Un Hilito) [En Vivo]
Guayabo Zarandeao (Va Colgando De Un Hilito) - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba03aff3e1016374246945cec68db8ebbaaf41e5a06e855c27a8dd7ede7bf3a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/PYC842416161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b559a5406e25417247d6010c469364360c8253733723644d51a4d505edd3fc8. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/PYC842421302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f831c1cdada90769a6e39da67ae603b99cc07a53e0ebb2ddcf18966effe112. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/GX53U2590132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b87e6e05649e963bf15872f666bfb6d1d409aed2216847ccd3788f111c3d5d. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/COA6W2101856.