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 0x66cc9c391b0579e9926bf3c76cb3f2042abaa246bcc5737287f1ed094c551210. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/81b46f6e-a43c-414a-a96a-cc648700216d.json and https://artists.proofprofile.net/proofs/artist/81b46f6e-a43c-414a-a96a-cc648700216d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
To Love Somebody (Live at the Churchill)
That's Life/New York, New York (Live at the Churchill)
Writing's on the Wall (Live at the Churchill)
King of the Road (Live at the Churchill)
Crazy Little Thing Called Love (Live onboard Norwegian Jade)
Mr. Bojangles (Live onboard Norwegian Jade)
Writing's on the Wall (Live onboard Norwegian Jade)
Feeling Good (Live at The Eastbourne Bandstand)
When You're Smiling (Live at The Eastbourne Bandstand)
Great Balls of Fire (Live at The Eastbourne Bandstand)
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 0x74e801632151a1a3d7362c85027147bc6c525f1e588197345f400ad81fe979dc. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:57:12Z), 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/GBAJC2500698.