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 0x2c9a6234de24cd989282e9a1359a2f3daac4e33e69f344448bb888d4b677fb8a. 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/f8f3f85a-83b0-4d13-952c-6fee6f84503f.json and https://artists.proofprofile.net/proofs/artist/f8f3f85a-83b0-4d13-952c-6fee6f84503f.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 0xfe008282dd6900178ff7a46601798f546dc4574d949d853c3ee2a10e483c7ac4. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/UYA130000086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f97ed83f2f99972a30fa1a7600ed0f9d3d0fe52f0868615f672e5f7c303303. 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/UYA130000087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12bd559d5cd046ba5b134e6d9fa7e967cd18326fce7f3c11fa6dcde5ab103a10. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:56:57Z), 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/UYA130000094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3affab1b92c23fc3d1a89411abecb6f5ee21ac8c10c193e50659cb319f7813. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:00:36Z), 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/UYA130100116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b09f3054e4ae152f3bfbcb972b66ca67d62b90c6ed2582926ebfba9dce26b6c. 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/UYA130100124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7e24dcf824a58eb1f05af12dbb82f0dfbc026441c414138493bfa08344fe5e. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/UYA130200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41582ffce7a7e0f660627ca78b5295977940d4028bc88c6710657ff4ea071278. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/UYA130200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d4e22249d909bbed865011c92665367166865a2ff2c17e5df0c29d24de0b6b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:55:53Z), 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/UYA130200033.
Presentación 2000 (Versión En Vivo 2020)
Presentación 2003 (Versión En Vivo 2020)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf46e0647ccfb51fe90b8a7121b71e4962860a55036fbde753cc69705b2f07ce. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UYA132100004.
Retirada "El Loco de la Estación" - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa0d3b88d8422e94776dc335819e9a119a0cf90952db4948a4608341a5e45bd. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/UYA132100009.
Presentación "El Tren de los Sueños" - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8378b2920f29868e3c16a37684c6118ab89a0f623f6c6d051bfdd530d91f2366. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/UYA132000103.
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 0x1e43dc2283710e8cb07e2d69a1b648afbc04d8c10425289924050eda04cb44fd. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/UYA132100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98374b61a13ef9e2a9403de4825c24325f3795df5629e500cc9f2fdb48c9e69b. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/UYA132000104.
Locura de Murga (Despedida 1993) - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6583ba744bd1f3d4af18115f0ec56f02a5bdfadb81d3584bafa4d924ef1430. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/UYA132100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7932cfa12ac681259e6326b4c15df16088f325f6e3a24aadab2dcfd43f68575. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/UYA132100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4dc5492d24cba07ca4a8cce3192c9b3f90db201c11bdd714ad5a2ca10cf333d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/UYM121201930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9501565d566566ab08c5fc7de9566b8041d4811035d4a37690a3fa8045337ea9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UYM129900227.