Ziva, Zivah, or Zhiva, is originally a Hebrew name. Ziva is a first name for women and an equally uncommon last name. The meaning of the name Ziva, which is a variant of Ziv, is “radiance, brilliance,
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 0x651af6b4c57dc6316f0a7110782140ef33eca20eedffc9f9c5d162310b7bf0e7. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd7747ff-9032-4ca4-81fb-cf590adeebb9.json and https://artists.proofprofile.net/proofs/artist/fd7747ff-9032-4ca4-81fb-cf590adeebb9.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.