1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x5eabac95479dec3bb9d94ce08a3d45187b0de0e5cd64ae9cf8a825d93f47b509. Chain 2 (Bitcoin): anchored in block 954593 (2026-06-20T19:46:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be085163-fd94-46bc-8dce-87d60065cb31.json and https://artists.proofprofile.net/proofs/artist/be085163-fd94-46bc-8dce-87d60065cb31.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lowlands and Friends Play Townes Van Zandt's Last Set