thumb|250px Straid (from the ) is a small village in County Antrim, Northern Ireland, about three miles east of Ballyclare, and about six miles inland from Carrickfergus. It lies at the centre of the
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 0x118ada554b2bf9e3d505702999758ca536aa97a67db2100d11f5cf1a173a169c. 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/5514925a-ed8c-4272-a210-6818264f2397.json and https://artists.proofprofile.net/proofs/artist/5514925a-ed8c-4272-a210-6818264f2397.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).