Colum Sands (born 1951) is an Irish singer-songwriter who made his first performances and recordings with The Sands Family of County Down. Between his extensive solo appearances, he continues to recor
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d393ec666c4db0d262153b9e8113d95da142c79b5d8d0ae7a4b3b42cbe4be4. Chain 2 (Bitcoin): anchored in block 953943 (2026-06-16T11:59:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/20c7e278-ead0-4875-ab76-77863d172a83.json and https://artists.proofprofile.net/proofs/artist/20c7e278-ead0-4875-ab76-77863d172a83.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).