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 0x9515132d565259983251eccec8e429b671f3dcee69e3e8e989121288895f5c13. 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/647afc63-097d-4784-9e01-de0b45192faa.json and https://artists.proofprofile.net/proofs/artist/647afc63-097d-4784-9e01-de0b45192faa.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 0x7d4ba53a8ca3c4847ab1cd026659e04d6352716b1615a1b5789847e11e5922a8. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:05:43Z), 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/BRDEP1100476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61dd6e049121176b532656b0e9210b6da9579405bb68b47a1b79e86b009246cc. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BRDEP1100487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d75d60e086523bd098a0554b4c86c3f20eafaa76610d543ed7566b1412f7c8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BRDEP1100481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbd3ccfacae4a1cfab04ec2f5e40613939e172d2942afa377820d03256de884. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/BRDEP1100484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1198079372a4d757d284c05f5b930ef4562e5ec6db1dbc906bfd6096ecaa3d56. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/BRDEP1100485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729bc29ad06b83fb9ec83dd06939cb4a8ac702e48f872b6667cc67d1d34d892c. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:07:33Z), 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/BRDEP1100482.
Please, Please, Please, Let Me Get What I Want
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf789dc6ee1267e7441e89e868d1740f72b65d042d8ca3e91a0372d5ae6ae7a9a. 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/BRDEP1100486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d90769578594ab55f320cf91187c109ceaf6e3322fb742658eacc709ca6c9b9. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BRDEP1200148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b369a59f087da058c30f8cd9b3a2567e346be337b5b8f871d8eb622f9702e9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BRDEP1200150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4909f3e0ea244863298e205d72f0ea48ef41bb081a66a1a08b2d779fba771903. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BRDEP1700011.