Jo Freya (born 4 December 1960) is an English saxophonist, clarinettist and singer. thumb|Freya (centre) She was born Jo Fraser, but changed her name to Jo Freya as a condition of joining the actors'
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 0xeb7ca84290833da1f2461980e0ba1483feba56da261d9f565037295c7ae5303d. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef4bb265-0bb8-42a0-ae18-3e6ffcd57242.json and https://artists.proofprofile.net/proofs/artist/ef4bb265-0bb8-42a0-ae18-3e6ffcd57242.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.