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 0x8c8f35df3c4a95e64d1c5aa125f92a0f6e5f0087a79cdfa3f8ff56e103bf8ceb. 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/d31f8f2c-f25d-4a88-a5bc-abb75f705e65.json and https://artists.proofprofile.net/proofs/artist/d31f8f2c-f25d-4a88-a5bc-abb75f705e65.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 0xbb89749cab5209bdcea6798a983949a115380ade2420a7e2f213be08f9626bd9. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/GBMA21859634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb89749cab5209bdcea6798a983949a115380ade2420a7e2f213be08f9626bd9. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:23:35Z), 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/GBMA21859634.
El Romantico de Todos los tiempos (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c4f0f743c848e5d55bc78427839036807d1a50b46929352a83dd64c3bd74a7. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:03:49Z), 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/USHM91079520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66f632d8f76db5da2e30f2a4a9ae19ccd3901be6ddee063c73b3a814ace5580. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USHM91079523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c4f0f743c848e5d55bc78427839036807d1a50b46929352a83dd64c3bd74a7. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USHM91079520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66f632d8f76db5da2e30f2a4a9ae19ccd3901be6ddee063c73b3a814ace5580. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/USHM91079523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1ab54f39a50bbed8f40aeeb3cca2d225b625894591297536f61012cc14d649. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USHM91079525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba58d0736d07194d84f48dd00848ec61c0dbb9e7586a672886f97d04b6630b7. 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/USHM91079529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de649e9deecc05acc5b1af1b92e242f94cbb3813a7d2e1fa07db2dbcdc8c69d. 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/USCGH1295269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ddf014098312e04a9ec58a058a62aad9c710f0b41338eb8a68a50f339ff1991. 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/USCGH1295273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5503b65562dd54f22df88ce26660562985529584e05c10cdb75fa69384af927a. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QMAAK2230878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af445fee063a3316e19bead63c972ed2053095629bb0aea193eb4f592a53a3b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMAAK2230882.