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 0x231eb9f7706a5b0d47dfaf7b44bded4e7109ed31e7813ea4c786b76279d415f7. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b60d3ee0-38ed-475b-976e-6c5dbb407885.json and https://artists.proofprofile.net/proofs/artist/b60d3ee0-38ed-475b-976e-6c5dbb407885.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 0x7e5afe3080f43b62352c0dbd96ab95a695b67ef8b2bec99caf8b542adddea484. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR19X1000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37a8885d1e25c3f93342a171827d21b356a2f17dc6a109d601509f4ba6858a0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR19X1000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb737b9b435111282cab9dd303bfac657d025f50eba5929bafaffe6712cc0476b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR19X1000043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc6bf5a8ef1748df30f59700bc8bc7e333bd9ebb1a99d30a88cb5c3f50e1bef. 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/FR19X1000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6ac6184dbab3953a696d5fb37d59cd3cbd1ecdce8489449412bef7ed5c105c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR19X1000045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b44c79f6af9d7af54f833bf50281a14155aaf6c48e9ed08ac9f5fd857cf538. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR19X1000046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e9114b47eaf084ac1dd23ffc5f0a857b3c79c3994c525bb36640dff7627da9. 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/FR19X0800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fced7d85c82aea6535e3be79c5aca50848a685698f265e8fd6704f73e035e06. 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/FR19X0800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1954577b4c28051cd2fda72021f2fee76b52fb17bfca91a61c95ea18ccd8676. 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/FR19X0800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b349efb107cc5d9fdd478a148f5ed092202b46de96bcfa41fbbae05b8cb3d2. 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/FR19X0800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493caff55210e3c2ef9222f16c4aa875c4548f335c82686895f0669399c82686. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR19X0800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031cbfa9a58817b2228b5a4bfb908a163071374b4c30e5e73fa2efbcea3f266c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR19X0800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf536fb25f853f6cc392a3151faf066222780df95049b77173a6f0eb1c70131fb. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR19X0800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3516f29fe825749d0dc65b8190b4d3ff95bbfdb5349c6c7f9217f9f6ddb0c1. 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/FR19X0800012.
Quelque part (extrait de l'album De Fil en Aiguille) (Extrait de l'album De Fil en Aiguille)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e9114b47eaf084ac1dd23ffc5f0a857b3c79c3994c525bb36640dff7627da9. 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/FR19X0800001.