Edward Holmes may refer to: Edward Holmes (architect) (1832–1909), English architect Edward Holmes (field hockey) (1880–1924), Irish field hockey player and Olympic medallist Edward Holmes (musicolog
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 0x7c18d1997fe0a25101a169ce61792d2c9479a1bbdec5d584f9002ef2b6ee1736. 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/173e65b7-4351-4935-89b1-827237f01cb3.json and https://artists.proofprofile.net/proofs/artist/173e65b7-4351-4935-89b1-827237f01cb3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).