thumb|right|300px|The Auckland Symphony Orchestra in concert at the Last Night of the Proms in 2004 thumb|right|300px|Carol Concert 2010 Auckland Town Hall. Auckland Symphony Orchestra, conductor
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 0xcad12966f73100c4831fe67da587d9e168c59753ee4ef331f03d278d20f5194b. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c79100e6-7e10-4f35-8cf8-54577b8038c6.json and https://artists.proofprofile.net/proofs/artist/c79100e6-7e10-4f35-8cf8-54577b8038c6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pirates of the Caribbean - Movie Themes in Concert (Live at The Auckland Town Hall)
Pirates of the Caribbean - Movie Themes in Concert
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 0x5a14b55dec9701b496f099ec9425aa2e2a0bd9b329c6149e92bdaa48cc9585d1. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:44:24Z), 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/NZVC11700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec61460b483d36e619cac972a69cb0a245c2163e2b73fed55dd0f92c79cea0fa. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NZVC11700010.