Fearn may refer to: Fearn, Highland, a small hamlet near Hill of Fearn Fearn railway station, serving the two RNAS Fearn (HMS Owl), a Royal Navy Fleet Air Arm base, active 1941–1957 Fearn (letter), t
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 0x3f72bc6902897691551f987a272678ab6692900ca2040d34a68ecf0f47b4d333. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ffd5a99-b6be-411c-8403-7457ca928e33.json and https://artists.proofprofile.net/proofs/artist/4ffd5a99-b6be-411c-8403-7457ca928e33.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).