Subhan or Sobhan (Arabic: سبحان sub·ḥān) is masculine given name and surname of Arabic origin meaning "praise, exalted, glory". Notable people with the name include: Given name Abdul Subhan Khan (die
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 0xd86bf3d744ef031e1e407e9b2d7e0e7d3fc01fdeb9ba880598024197f067047f. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/272c532e-6ba2-4750-a2d3-b0bb9ff74c58.json and https://artists.proofprofile.net/proofs/artist/272c532e-6ba2-4750-a2d3-b0bb9ff74c58.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).