Michael or Mike Buchanan may refer to: Mike Buchanan (ice hockey) (1932–2017), Canadian ice hockey player Mike Buchanan (politician) (born 1957), British men's rights activist, leader of the Justic
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 0x2ea4afcc7d0b4cd61960a1b04f45608c68729f08a90b3e2d20258baa17925e6f. Chain 2 (Bitcoin): anchored in block 954593 (2026-06-20T19:46:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be5b3e6e-40b4-4dfc-ae88-c62175a64947.json and https://artists.proofprofile.net/proofs/artist/be5b3e6e-40b4-4dfc-ae88-c62175a64947.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).