Bello Abubakar Shariff, born on 1 November 1998, and known in the entertainment industry as Bello Sisqo, is a German singer, dancer, songwriter, and music director, originally from Maiduguri, Nigeria.
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 0x3ca9447f58da0d3577fd17be0f307b11ab6d7f2fd41f5ae73fa76234b2d4e3b2. Chain 2 (Bitcoin): anchored in block 954069 (2026-06-17T08:30:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a319257-21f8-4688-b47a-d1218762a2ce.json and https://artists.proofprofile.net/proofs/artist/7a319257-21f8-4688-b47a-d1218762a2ce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).