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 0x547dbdc3d8163d49296e1498b617bfa6f7c152b0a509e248d1da13a4bfa66992. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/32b8a8e9-36d6-4d9c-9924-36b1e41585d9.json and https://artists.proofprofile.net/proofs/artist/32b8a8e9-36d6-4d9c-9924-36b1e41585d9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Wide Wide World (Radio Cut) [feat. John Mitchell, Marco Minnemann, Lars Slowak & Frank Us]
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 0x4229e1f1b8740ea1d0db3543c7eade97b0c0ae5ab74e94f797dac27e14f46ba3. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:48:26Z), 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/DEF762100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ec112ea402619792452bed46c297a57932382356d3ba886c732ebbbb7bf114. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:02:44Z), 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/DEF762100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360c270b7c83b1dd529e04da24a3ee612009a4e74dee00087c60e9038fff2f38. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEF762300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe3e5f339771538177a038c2564cfc166c3b24a8553d0c0ce53db074fb5b5f6. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEF762300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83139551923ae17799038d87397df509d1ff6f8819a82dcbd7c66f3f7af8be6. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:54:15Z), 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/DEF762300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda2f3cbac6c4ee5ed193b07d96de9db65d92fd49da01ef394371f40e0af98aa. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DEF762400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599b60b14fcfc0fd1684c14d20e61e7406a8f6c8157a9637d2580cb9a1a11153. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/DEF762400003.