Guy Boucher (born August 3, 1971) is a Canadian professional ice hockey coach who is the head coach for Russian KHL club Avangard Omsk. Boucher is the former head coach of the Tampa Bay Lightning and
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 0xe9fa32ca5bf412a28b458f2e5f3a683102206b2e2172c8a5c86ccf11a28af092. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d5bc4a5-506b-4b7a-9628-5961cb4c1ffe.json and https://artists.proofprofile.net/proofs/artist/2d5bc4a5-506b-4b7a-9628-5961cb4c1ffe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).