Sidonie-Gabrielle Colette (; 28 January 1873 – 3 August 1954), known mononymously as Colette or as Colette Willy, was a French author and woman of letters. She was also a mime, actress, and journalist
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 0x96e535ab09cd838d34cc7bcc17519b7589fc6470b1f5d4b7fb40886c90a17eb2. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/53ee82b7-1dcd-4432-a7bf-23f2d9f070dd.json and https://artists.proofprofile.net/proofs/artist/53ee82b7-1dcd-4432-a7bf-23f2d9f070dd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).