Blund is a surname. Notable people with the surname include: John Blund (1175–1248), Archbishop of Canterbury-elect and philosopher Robert Blund, Norman Sheriff of Norfolk Stephen Blund, MP for Lich
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22375949c288ede4bf3d3127e72c0384bdd0075bb323b7e2765806b22cbac64c. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b614bf75-84f4-4478-9672-c9b39b4c3685.json and https://artists.proofprofile.net/proofs/artist/b614bf75-84f4-4478-9672-c9b39b4c3685.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).