Paroles (; "Words") is a collection of poems by Jacques Prévert, first published in 1946.Publisher's page on the history of the book. Lawrence Ferlinghetti's translation of 44 poems from this collect
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 0x8cbd9a33466b573df56df43e0dce15ec67da8f8e9796941a623e782e12541cd3. Chain 2 (Bitcoin): anchored in block 954588 (2026-06-20T19:15:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bc4a1cfe-aaa9-4f4c-acee-be67621066df.json and https://artists.proofprofile.net/proofs/artist/bc4a1cfe-aaa9-4f4c-acee-be67621066df.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).