Baya Bouzar (; 13 September 1952 – 25 November 2025), known by the stage name Biyouna (), was an Algerian singer, dancer and actress. Early life Biyouna was born on 13 September 1952 in the Belcourt
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 0xd7888c169c51cc7dc85d9a7012e3358337c88f6ce7af21be06e90893e66bc851. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/035e5a61-2551-4c6a-b286-9767d18657eb.json and https://artists.proofprofile.net/proofs/artist/035e5a61-2551-4c6a-b286-9767d18657eb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).