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 0xb098c5073da88005c54de2d458e5b0e019b3e5fc10e2bede860a04b9da033590. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4cbf5375-da09-4e20-aaad-062dc40c132a.json and https://artists.proofprofile.net/proofs/artist/4cbf5375-da09-4e20-aaad-062dc40c132a.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 0x1db5385a0a98e46a58ede7c768e13760241414cca81dc5c77e6d423309a85dd4. 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/FR2X42296711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f5cb3276aa1f6a6c21ccdc493c80ac19eddea0c27687c4c6ffd94b49745227. 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/FRX762322713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5509573d6126cef78126a176ab18e94920b02e9292111369f367c62b8f7512. 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/KRA302400161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbd90c5fa7b46fa3c9f6af2afdb27b8a7c67d7b9266aa19354d4f71614df277. 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/FR9W11204539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895e80f475ec2dc70fa9cb937c6b7f09a8a37030687e13a22b5680e313260d8f. 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/FR2X41988183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865eff479bb733b703b8737d558936e4d9886b1a85920e88e2284054ee491d24. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FR9W11507240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2488e0e8202afeb49d32b6aa1bf3653b36e47ba3ea6de76b60454a631caf56. 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/FR10S1812742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1ae99381089f187c9a24cd32899f235bbd908e7664b877c19dd56483fc850c. 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/FR2X42296710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9730fcb6fafd012f217a634eaf603c34658815bc5311c186d1626f859d417eea. 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/FR10S2035156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3f12059d97aa7e669b34d8b5d434f1adfa826bab673cff174eacd1055c798b. 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/FRX872181768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db5385a0a98e46a58ede7c768e13760241414cca81dc5c77e6d423309a85dd4. 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/FR2X42296711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767222918dc89f9a02c2d9107ff31bd566d0c9b6dad7fcc120ab0e2276143541. 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/FR2X42296712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971212eef56f896de40efee21bea0f76a765667238b4a357fd2a32f187fa3a02. 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/FR2X42296713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaeafa1970af8d00189572ee56318187e39bdb1dda34ead06d53de1161548c79. 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/FRX452102758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960c688537b55a34717b8b0edfb122a2bdc01f049365e6ad954d1429bf62b65e. 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/FR2X42296714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11dc118e1d8fd229fb0769a69a810c6e9d98e83704aaddf5e5792783ee85eeec. 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/FR9W12112201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfd434f0c61ef760e0d2b16526040fb50e522fc7c3e1b82821ae951ed7853e2. 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/FR2X42296715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9a31017ab6a683e00b721477cd6b05f270ae38da46a4ded35ee7a0b0f59ca8. 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/FRX762162773.
Comment revoir Oursinet ? - Darius Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8ac61b60dee00bc0310d18682f85ceee3676f86c4fc288bf411e7dfdda4b90. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FRS711500130.
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