Fix or FIX may refer to: People with the name Fix (surname) Arts, entertainment, and media Films Fix (film), a feature film by Tao Ruspoli Music Fix (album), 2015 album by Chris Lane "Fix" (Blac
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f2e06a63843808953bfc0df06f0e0a301b09df04d753c305d82cd2594efc49. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12ce8338-7ac7-4bf7-8715-5e67e356c59a.json and https://artists.proofprofile.net/proofs/artist/12ce8338-7ac7-4bf7-8715-5e67e356c59a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).