Myroe is a large farming hamlet on the outskirts of Limavady in County Londonderry, Northern Ireland. It was built in the late 18th century CE on reclaimed land in the Roe Valley close to Lough Foyle.
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 0x4a5b88028874c5a6e0ef1c90104aeec69c5b1ac66a2a20ca93e9f65c0ca9a26e. Chain 2 (Bitcoin): anchored in block 953621 (2026-06-14T09:42:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/220c5a18-6dd2-46dd-aa68-9e3515ef483f.json and https://artists.proofprofile.net/proofs/artist/220c5a18-6dd2-46dd-aa68-9e3515ef483f.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.