Big Country is a Scottish rock band formed in Dunfermline, Fife, in 1981 by lead singer and guitarist Stuart Adamson (formerly of the Skids), guitarist Bruce Watson, bassist Tony Butler and drummer Ma
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 0x364b4405f50537f5ffa26bb69480b78f0b7ee6f5b2d8bf0a5b4d5631798d5e7e. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/777b8dc0-6f20-4d41-bc63-fb63c8493ff7.json and https://artists.proofprofile.net/proofs/artist/777b8dc0-6f20-4d41-bc63-fb63c8493ff7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).