Sanam Marvi () (born : 17 April 1986) is a Pakistani folk and sufi singer. She sings in Sindhi, Punjabi, and Balochi languages.'First person: Sanam's Sufi calling', Dawn (newspaper) Published 21 July
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 0xd24b0ae7ec49e025e31602d023d6af6f237ed6b5dc1534a63450cd8a430d97b6. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac5f5760-6ba5-4981-b7ef-eb4ef0a7ba1c.json and https://artists.proofprofile.net/proofs/artist/ac5f5760-6ba5-4981-b7ef-eb4ef0a7ba1c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).