Sir William Wallace (, ; Norman French: ;The Editors of Encyclopaedia Britannica (15 April 2024). "William Wallace". Encyclopedia Britannica. Archived from the original on 30 May 2024. – 23 August 13
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 0xfb07ff749a5f7a8ad2b822a714165fb8bba95f895568b067597fa48a844bc94b. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d830968b-0bc9-4ad2-8ab8-a4711553c702.json and https://artists.proofprofile.net/proofs/artist/d830968b-0bc9-4ad2-8ab8-a4711553c702.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).