Tracy Rose Chevalier (born 19 October 1962) is an American-British novelist. She is best known for her second novel, Girl with a Pearl Earring, which was adapted as a 2003 film starring Scarlett Johan
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 0x331ba32501f3d0adc8c1674b7816e3598de5e5935147b4b80fc5f1cd5852dc3c. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2ce8015b-f885-408e-9f52-ab82f318142d.json and https://artists.proofprofile.net/proofs/artist/2ce8015b-f885-408e-9f52-ab82f318142d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).