thumb|right|240px|Oxmo Puccino Abdoulaye Plea Diarra (; born 3 August 1974), better known by his stage name Oxmo Puccino (, ), is a Malian-French rapper. Career A longtime hip hop fan, at age 21 Di
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 0x06453fd9b44c2a0303390bf6dd8f2c02c0423e8fa921ee7912b888045a395d27. Chain 2 (Bitcoin): anchored in block 953627 (2026-06-14T11:43:04Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2f523a95-7c0c-4cb6-b830-14ba7365fc5e.json and https://artists.proofprofile.net/proofs/artist/2f523a95-7c0c-4cb6-b830-14ba7365fc5e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).