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 0x0178396e7bb9d509f895fb2245991ab2f2f2194e38ac509978bf8b91821059ac. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/80bdc3ef-1fda-450d-9ec6-e1c96c8edae0.json and https://artists.proofprofile.net/proofs/artist/80bdc3ef-1fda-450d-9ec6-e1c96c8edae0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Datte Kyo made Koiwazurai (B.M.K Special Edition)
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 0x572fe4ad9a83192616ceb8033a38461c4d90e0b1ae9fa4b8d956e683ffb62c33. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:49:37Z), 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/JPVI02103318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572fe4ad9a83192616ceb8033a38461c4d90e0b1ae9fa4b8d956e683ffb62c33. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:29:12Z), 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/JPVI02103318.