Ibrahim Mahamadou Fily Sissoko (born on March 22, 1989), better known by his stage name Iba One, is a Malian rapper, songwriter and record producer. Recognized as one of West Africa's most prominent h
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 0x3254c12e7b293ae88e5e0a50bdfc601dd4e38cae16d8b6309107706f520a4bf4. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6915071-c0fe-431f-b6b2-ee56e423153f.json and https://artists.proofprofile.net/proofs/artist/c6915071-c0fe-431f-b6b2-ee56e423153f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).