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 0xb3d4a54fab805ea4e008eb3ca4ff83348c3a1540b1db6b9d638a07714fff6fa8. 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/d47769e1-5642-4c98-8f09-685bc497f86c.json and https://artists.proofprofile.net/proofs/artist/d47769e1-5642-4c98-8f09-685bc497f86c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Musical Historical Documents No. 3: Ramón Ropaín Play Lucho Bermúdez
Musica para Despertar los Sentidos - Piano Tropical
Música para Despertar Los Sentidos - Piano Tropical
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 0xdaaca07e790eeaed2b58e699fa28184f0f0fd7a19875f9b79225585864e91899. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/COF019401278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd11864f30e510038c7790dcbdb859c88af6d8c6f9377ea4cf5accc14a086ea. 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/COF019002855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a219e9117938a0533c473f7c4fb59c4b0bfde79fa9d2ba6cc217d75e94b298f. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:38:17Z), 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/COF019002861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f048bd7b97d495db2528ec636674b3b75ff9d238d4c4efeadb5b5622ceb46f. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/COF019002866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2f765232e1038e31892acbfc3053752132a9432088d66e8980cd51f466ba48. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/COF019401178.
Música para Despertar los Sentidos (Piano Tropical)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfa8f70e7782619d1896426055aba5a5a0836e44f7d46f9fc61ce50bfd4f76c. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:59:53Z), 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/COF019002778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11fc7dd7f9779680ea330eff983bc0444e9b10267a48f3c14cd5d8e9faa489d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/COF019002854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4daefb5811e612858d056e9513a4720292473220af0ce5b62f28ae59f4362401. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:52:43Z), 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/QMDA61819905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9fa79b1062573ca11992c38ac345bca532e8fa362e420550492ae29b899140. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:38:20Z), 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/QMDA61819912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2a0718ba443956885db85605dd3ee15eed27d95f92ebcf534e952d87818003. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/QMDA61819917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e1491b961f8e1a217da2de848573b36c78c269ed126ea34a5bbd35ff5d86c6. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/QMDA61819921.