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 0xb87a78a767c92d642fe1a992efcabcbb130b9d007819b1e260e244f152ac510f. 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/afcc3a0d-5bcf-4343-a52a-85a99b9cb519.json and https://artists.proofprofile.net/proofs/artist/afcc3a0d-5bcf-4343-a52a-85a99b9cb519.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 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 0xa759ae1013dd91463b1026350bc9ad1efacfdaa4ca82d73506e82546ecaf54ed. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/FRX088470019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fee7480e8b28a666dd1c54df805ebd17c37d0c0a2166fd731b64562a8356ec. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/FRX088470020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bfaee34a9c0ffb9f7e33fc57a9e01d66e22df95db6d7c30cec25efda00a962. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/FRX088470021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff6832448235af69a12a3791dcf64c917eb3bdb37dfbd1a9454606c5562b478. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/FRX088470022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75b67e84166479b52375388835e8986a7d52687ef63c2a63d680168151189a6. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX088470023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1692734cd81aa19ff487563f980f88646a2729eeaf9fa51b7a8d943a1239af4. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/FRX088470024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1c5db040377bbcfb4e68186b30ace425edebda5cbfebfc9c401013aac62027. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FRX088470025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a9935116a2130e106b40c6bd5b6d4ddab4ec655f61a5dde110733430cc0568. 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/FRX088470026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cef43b4a52618ba671c63a1f08446d95659cd1c31f5e2bbf8e7a81e17b77b7. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/FRX088490124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e40e6d8523e72669179ab29f45916aa01fdb2e5e53aaa0f60521f11a17a4af. 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/FRX088470044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f0771ecd1423f97e9d224f19a73ad5eee7c496c7460aa90733d0b2f951e967. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FRX088470045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02945e99688da40ea085897dec758157aa2c5f5950934c204808c379b192c690. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRX088470046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20cd1a544f835730c989387ba8f99d592b76d83fa391a574935262178bceddd2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX088470047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aec44305d42d40f273bf86350c6cb57f6061940ae553412668dc20123d6d3da. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/FRX088470050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015b761782ba4a1314360ac9dcfdcbe901e7bfe3edae1c1b5761f9d6cabef1de. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FRX088370018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248b1b15fe5123f4b38141996c8a4e3a4f7be1a1bb2a3f204c3052ee73f6adb6. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/FRX088370019.
Derrière les portes de Babylone (feat. Myrath)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04858e9aa139bd48d1d0ee6cf50e277bbf4a76086dd3554d404855826246ffc. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/FR7Z82200191.
Coram Populo (Live au Forum de Vauréal, 2023)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f7724809ebe2c160efc15a28340e7c249bed082558f5d7ad48a88f75e3629f. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/FR7Z82500108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abc216aeb1e626c3d0c4b25ba0345dfe517bd01bbe84008f1f609fce903e12f. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/FR7Z82500109.