Mike Cavanaugh (born June 7, 1968) is an American ice hockey coach and former player. Cavanaugh was an assistant at Boston College for 18 seasons before being named as Bruce Marshall's successor at Co
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 0x93818c96dba7459167dac5e903943141f9a0e187c4baa6b15f956fc4398b65b3. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2024b5f-096a-4eb1-835b-286401b5717a.json and https://artists.proofprofile.net/proofs/artist/b2024b5f-096a-4eb1-835b-286401b5717a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).