Abrar-ul-Haq () is a Pakistani singer-songwriter, philanthropist, and former politician. His debut 1995 album Billo De Ghar sold over 40.3million albums worldwide, which made him a household name an
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 0x36ae2eeef64f85bc7b713162e2609f11f8dfa7324d82bcdcd87d4a18486ee65b. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/13e3bb2b-9517-429f-82f3-64c2589218b2.json and https://artists.proofprofile.net/proofs/artist/13e3bb2b-9517-429f-82f3-64c2589218b2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).