Edmond Eugène Alexis Rostand (, , ; 1 April 1868 – 2 December 1918) was a French poet and dramatist. He is associated with neo-romanticism and is known best for his 1897 play Cyrano de Bergerac. Rosta
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 0x7c7a4e384a84d111cffaeddc3cb32f930cdb696f4e798b785e8bca461cc5c60f. Chain 2 (Bitcoin): anchored in block 953896 (2026-06-16T06:05:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f74ab48-cdfc-47a0-ae28-f4404f15c0af.json and https://artists.proofprofile.net/proofs/artist/0f74ab48-cdfc-47a0-ae28-f4404f15c0af.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).