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 0xb2da704e0c24747fde15c3f414a67582e526479ec5900aa34b6e825c4425c6fd. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9588dd4-4fb7-40ba-9081-ef51d30353c8.json and https://artists.proofprofile.net/proofs/artist/c9588dd4-4fb7-40ba-9081-ef51d30353c8.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 0x436f3cf3b0ff915c27bdb8db3d8114599d1a3a12db03b6c9652064dcca3e638c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CAH681900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b87f0f8aa37b49aa65fbf6c0a11eced571dc60f78825c8c6d65b7a43fa740b3. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CAH681900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85954d3e9e824b9093ee6482918238ed6debdeba8592a8b57173fae5c4783e43. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:14:08Z), 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/CAH681900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7fbe68e6871b0667bcee80e22d9620624a085afa3a4206985300470dc3b9a5. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:54:26Z), 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/CAH681900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f27509d6bf03fd409d8071ab3e5924b9ca20a280f301cc200b88faf20d7b04. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/CAH681900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb31dd946468b4a5959a5e861a0542b8dc6dafbc561e4c9ef5c5f33d0a3805b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/CAH681900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443cd630401c3338d598e929044f0ece655566b51d10dee78a036516b1b59959. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/CAH681900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3d1685b014a6103716a84d6d6dcff3af6a0ed62f43b03c963b38a8e65a3707. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:43:56Z), 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/CAH681900029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631f3f4698558672381d8fc4eb12bcadd69b28fb15102eb8d1c3a25f3437d94a. 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/CAH681600058.
Les yeux sur la balle (feat. Robert Nelson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a30a92646d71daa30ca8afa705a50993b722c268846a87350f3ce53bec55b9e. 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/CAZ841900058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a30a92646d71daa30ca8afa705a50993b722c268846a87350f3ce53bec55b9e. 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/CAZ841900058.