Sahab (or Sahib, Saheb) may refer to: Sahib, an honorific from Arabic Sahaba or Companions of the Prophet, companions of the Islamic prophet Muhammad Sahab district, a district of Amman, the capital 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 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 0xc6c529a0f366765e89116f2617bd6763051a0224a4dc70175a98546a8bbb5132. Chain 2 (Bitcoin): anchored in block 953922 (2026-06-16T09:36:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b400fca-16c5-4b93-b51d-4e5baf28c652.json and https://artists.proofprofile.net/proofs/artist/1b400fca-16c5-4b93-b51d-4e5baf28c652.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).