Sarah Grace Perry (born 28 November 1979) is an English author. She has had four novels published: After Me Comes the Flood (2014), The Essex Serpent (2016), Melmoth (2018) and Enlightenment (2024).
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 0xeafb082bc5cb4905bce2e9c82ef35c7ce3586c47bf01858303a1a776484e9495. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/89587907-5d13-4bad-9d50-79cb06edaeb8.json and https://artists.proofprofile.net/proofs/artist/89587907-5d13-4bad-9d50-79cb06edaeb8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).