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 0xf25265201aa0205235d57eff352097f4a6f50522c1b27db1beff2d2492d08d30. 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/2eb041d0-0f95-448e-91ae-025a8187a6e2.json and https://artists.proofprofile.net/proofs/artist/2eb041d0-0f95-448e-91ae-025a8187a6e2.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 0xa609e98b661872e79d6b600ceb43b1f206d1c4e99d8578b6758b6d3150624beb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MXF019100252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66634f3329f793b494e53be6dce8fd5009cfe8aab2417cebd920cc762701d800. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MXF019700686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf206692f94ebf5a0aa76abb86f75ced2ff4036e05087c2b39b5d42d01d69817. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MXF019900970.
Camino de Guanajuato (with José Alfredo Jiménez) - Mix 2023
Las Clásicas de José Alfredo Jiménez Vol.2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc543d751407a97677baa1be6a2dea004ad637199e57aa723cb4efd52cb5d450b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/MXF012300959.
Tu Recuerdo y Yo (with José Alfredo Jiménez) - Mix 2023
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c31a9f0352eb9c113e61bf95b3bb76ac7ff8571c64e1bcb7882c8ae9b66780. 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/MXF012300958.
Tu Recuerdo y Yo (with José Alfredo Jiménez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0229c0a719cd8385d60fe7d814561d4b7fe94ae39d46096bf8418626039946a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/MXF010500220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7527b53218ef66b718e412728ebd4eec6ffd291cdd513f0f1ac821a1a720dd55. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUTV2101437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb782ec894776b9f08f86952a108c605d2daaa26ce4e5f1b7f3f963445880bb1. 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/USUTV1901044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7527b53218ef66b718e412728ebd4eec6ffd291cdd513f0f1ac821a1a720dd55. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUTV2101437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13696ea0f5755e6e8987a8d66596631b4155b5817383305019ef1e3772ab22f1. 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/ES5100300199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7145542bd505ea805a6904b99c265a397096b10a93ca4c8ad863f92b7db503c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MXF010000609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801abbaf9178d77861b711da4ec4e43bbf7670eaa1bc5573a37ee455f4979d26. 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/MXF019801064.