Owen Francis Hand (28 December 1938 – 16 February 2003) was a Scottish folk and blues singer and guitarist, who recorded in the 1960s. Life and career Hand was born near Edinburgh, the youngest of fi
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 0xb5283e10e079495f3255ab17dc223606a1f14d293418ce817e291b25b63c933d. Chain 2 (Bitcoin): anchored in block 954031 (2026-06-17T01:43:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3a5aee00-1abe-43d7-8112-fe120404f547.json and https://artists.proofprofile.net/proofs/artist/3a5aee00-1abe-43d7-8112-fe120404f547.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).