Delphine may refer to: Delphine (given name), list of people with the feminine given name Delphine (novel), an 1802 novel by Germaine de Staël Delphine (1931 film), a 1931 French film directed by
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 0xdb05d32e418217f5b881d25d64ce01bc41ef2e40cc0c529f9b4153e614dc4e9a. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e9391733-8b90-4f63-8e42-6057c038f763.json and https://artists.proofprofile.net/proofs/artist/e9391733-8b90-4f63-8e42-6057c038f763.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).