Ahmad () is an Arabic male given name common in most parts of the Muslim world, since it is one of the well-known names of Prophet Muhammad. Other English spellings of the name include Ahmed, Ahmmad.
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 0xf86c923ff76db6556533bac6876f0ac23318ec2eb2f7cd6398f144bc85066a24. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f9e57acb-d875-4d9d-90ec-84bc8cebf1a0.json and https://artists.proofprofile.net/proofs/artist/f9e57acb-d875-4d9d-90ec-84bc8cebf1a0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).