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 0x684c282d35cce80bf769fd2c1cf68d56ac6ab615e9bd6cf335636a39e2c46661. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07418fa8-8d87-479e-8234-f87fe7e5da1d.json and https://artists.proofprofile.net/proofs/artist/07418fa8-8d87-479e-8234-f87fe7e5da1d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Classical Music of the 21st Century - Vol. 9