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 0xe6ec8ddce37acfbe1c25e5e6d547778d84f74e0baa477fcc4682bd2ff2ddcc73. 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/cfabd24b-1f96-4766-8063-0fa8d5b22d65.json and https://artists.proofprofile.net/proofs/artist/cfabd24b-1f96-4766-8063-0fa8d5b22d65.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Le merveilleux voyage de Cheeko au pays des FDP
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 0x3229441b9d72926fff0be345b2a417fe11daa5563d0922b26a80044145a7620c. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T13:39:11Z), 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/FRPGB2114000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266949ce9224199c92e320b563c33e4e303c475a8d20602dce6264ed443efbc9. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/FRPGB2114010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a48a2af097d80de8000b2d02c45955a823e97ac635bdbd0699d29a8c15482b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRPGB2114100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163a9b22c4611c43bf0fabda5d1c01fbc2160d1ced11de02b44cc4e6e34a304c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRPGB2116570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c7fe3cbbc8d0df1af1dc4bd20136186f66f9f453a0d318b9bdbe68f3f2a5b8. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FR4EO1400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6520a1d4afa1955f4710aeb2e7ff52596a5611bc4e778df7c62abbf72d391f. 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/FRPHC1700064.
La cruauté tranquille du quotidien suffit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdfd030b59d8ff0e6b2fa006f4f66a8e186f1532585c1cbfc39a82c9ae0abe1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR5DN1100223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1554da89297b7142166f0c6b71555c04beda4fd5d7e1a0031458dcc7b67b8b6b. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/FR4EO1400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa297276d5dfd54ab0f8a8ee9bf2212201054ff10b91285e9d00469a18d5e2ebd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR4EO1400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b2fb7bbfe668ebc5afa569761909187f622032aa5c82a007a1e0298e81a1ec. 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/FRDHV2300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59ac100cfbb0b8c61942850a1cae6a71809839bec3c0a97644390079d5ddbf8. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FRPGB2113320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414a63566af03092d3c14ba16b3e07e6199b3f8966024bf66b557e03276633d1. 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/FRPGB2113330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1ce8c746202cdb973e8e23db58308fdb4a67f8361d6db9447276da12432cc0. 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/FR8Q22205029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82611d2906e0a8de706ca456b1916bc194df5f3c27559f3790f6bf7c180843a1. 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/FR9LT1900250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82611d2906e0a8de706ca456b1916bc194df5f3c27559f3790f6bf7c180843a1. 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/FR9LT1900250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651b6565580a93f65a1b82d09b235ed9a0aa458e447afd359290048a402f67bb. 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/FRPGB2116660.