Brian Walsh may refer to: Brian Walsh (English footballer) (1932–2001), English footballer Brian Walsh (footballer, born 1934) (1934–2010), Australian rules footballer for St Kilda Brian Walsh (footb
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 0xf40f31e4e086dfa41d3fe59d775182d3be0edbaec0cb55a248aa24acd98bc3db. Chain 2 (Bitcoin): anchored in block 953670 (2026-06-14T18:07:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/59603f28-d03b-4e68-9b14-54c5528ffe82.json and https://artists.proofprofile.net/proofs/artist/59603f28-d03b-4e68-9b14-54c5528ffe82.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).