Olivia Green (born 25 November 1999) is a British modern pentathlete. She won an individual bronze medal at the 2023 European Games and was part of the gold medal winning women's team at the 2022 Worl
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 0x1a9092c4ba6b2180acb0425b9ef57219e6c7573622dc24b1f6430de5931259c6. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/78a23e20-827d-45a6-9dd5-f631dc6193fc.json and https://artists.proofprofile.net/proofs/artist/78a23e20-827d-45a6-9dd5-f631dc6193fc.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.