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 0xc8e7352b45be1976391261085d5b51103d05493818e9b95893180efa1a86f4e8. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/53e396a3-2b67-42a9-8592-ded7d23ec557.json and https://artists.proofprofile.net/proofs/artist/53e396a3-2b67-42a9-8592-ded7d23ec557.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 0xe5c07987f518e42353c9f8c0e27e2256307def96c57055988548f43a8b216a42. 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/FRP102200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90e6768825466518ab56063950febd52111ec1057a732fb19aabb07fa6229cc. 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/FRP102200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880a2dd156f1260fe0f096c5884ec3ff79d1e03cc272ac383255dad1bc804f0f. 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/FRP102200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa82f6a171ac9133deaf874d6215d81bde3c99a8d38c50ee257449d00a933ac. 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/FRP102200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd542dea99e6427638c16d5cf0e9a7185241f5e7ee77b0965e342af96b2252a42. 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/FRP102200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d73f7790650f30a519ae706b02f29c8db0e5c63f9ce7ca345563a9a80abbd4e. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-23T23:48:47Z), 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/FRP102200070.
S'envolent les colombes (feat. Ruth Rosenthal, Rayess Bek, Yves Dormoy, Mehdi Haddab, Julien Perraudeau) [Hommage à Mahmoud Darwich]
Le cantique des cantiques (feat. Ruth Rosenthal, Rayess Bek, Yves Dormoy, Mehdi Haddab, Julien Perraudeau)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068a1e01ffcbf916fe025ef1d3c779fc9094da67a2ce167a587f09fc07ca3fbe. 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/JOA021900201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0519d9eb55cd67700e88d75aa7e1f54a38d39b597e810cdd82f01fe195cd1be9. 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/JOA021900202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d304360273af80c97574b3139b8cd4082b712087cfcfca265bb94392b96347. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JOA021900205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10eca8e77d195644260587d55f5da0ef16424408b77c9ed36c20d4ab8c129c96. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:48:38Z), 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/DETP62200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac52b94f3e257fdc74448124ff52575744d906cbe1795576fcc3fb03d792503. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:26:34Z), 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/DETP62200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a77b8607a6e23ec74452acf41b973cda16daa9f060cdf2113bf8bee096c07c. 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/DETP62200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0933891d16b0a7dd77690cde1e1d5b73e166c62fbd8345722587614519c96fff. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:57:38Z), 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/DETP62200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec71ad67dc8254993b520ac79eac1e5e97955c4d237f5914cf3c2713873324d. 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/DETP62200015.