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 0x2d6b92894dc040513ba45d8be883d5f6f37439f17367ea4f446939a83a3d26d1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4ac8f82-31d8-4255-b2a9-56f36c343688.json and https://artists.proofprofile.net/proofs/artist/d4ac8f82-31d8-4255-b2a9-56f36c343688.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
30 Canciones. El Boom de la Rumba Vol. 4
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 0x6f01b2585a0a3bfca6a8bfc56594aaff15e3e1b492c570589e141cd1ef5a8b24. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES5630700514.
Noche de Rumba. La Mejor Música para una Fiesta Rumbera
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6909bc08ee3b36b23795b4b25efefbeefaee81e9663f0bda6037a589bf91d9fc. 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/USA371657852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b738e8f556e65ad9d08c6f553b0a12f0e7f983a512366d86461899614276673. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES5630700215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b33dacdcbd71853afe7904df135058e652e16d895e08511f09cc6f4372a6c28. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES5630700216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee70fba5e403605a39a678e05480789c709b79a99683e94a9bc089a746b59f12. 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/ES64E2482249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9879061941532e93606619e5f5e58e5473ab1992b1f367b938ddb95eca0da5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES45D1900089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b08cd5d09b501ad49d7eb1371b797662a36335322e6da5497da0274e464e991. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES45D1900059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe770d379838dd71bafefffcc5f3a1ebaa4f516854d03c6789abbc410f233462b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ESA031803201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04bde2860d63500064269a00347374a29bb3ec4385fa48a44cf1a47f95631af. 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/ES09C1200547.
101 Villancicos Gitanos de Todos los Tiempos. Mix de Navidad por Rumbas y Flamenco
Navidad Con Alegría. Aguardiente y Pestiños
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e280e71e59983bf8939f059fc217a319a376d96e12227223d883319472da3f. 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/ES5630702471.
La Abuela. 50 Canciones de Juerga y Pachanga para Poner en una Fiesta y Bailar !
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e61c6f76c044d9e51f525d3dab4dadf0052f57524eebc914dc004ea3f13d7f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES5631105446.
La Abuela Fuma! La Mejor Musica de la Orquesta en Fiestas para Bailar y Cantar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b738e8f556e65ad9d08c6f553b0a12f0e7f983a512366d86461899614276673. 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/ES5630700215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e61c6f76c044d9e51f525d3dab4dadf0052f57524eebc914dc004ea3f13d7f. 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/ES5631105446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef057443bbd6fce98d9c760ceb9826acf9cdea1dcd0b14b74ec63a840fd9c66. 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/ES5631105236.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e04c8ef4997d3243337403847441681c1ed3058597afbc0eb99898c32c265e. 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/ES64E2504990.
Palabra de Gitano. Rumba Gitana Con Duende