Chaima Doublal, known professionally as Chaimae Abdelaziz (; born January 26, 1996) is a Moroccan singer who rose to popularity as a contestant in the fourth season of The Voice Ahla Sawt, broadcast o
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 0x8ffe054a4b2930dbed013c16964289356bf0b612826ec4caa05ba2a8ee6ad5f7. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bcd8edc2-d2da-45ec-b021-60be730f0f03.json and https://artists.proofprofile.net/proofs/artist/bcd8edc2-d2da-45ec-b021-60be730f0f03.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).