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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b81973d78fda0fcae9c61b4a42f05cb8e5daad2e04dc2e342907f4903ff627. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f9fab065-d403-4b50-b08b-18d29cd337fe.json and https://artists.proofprofile.net/proofs/artist/f9fab065-d403-4b50-b08b-18d29cd337fe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Tried to Lose You (But I Don't Know How)