Vivien may refer to: Vivien (name), variant spelling Vivien, Western Australia, an abandoned town in Australia , a British destroyer launched in 1918 and sold in 1947 for scrapping See also Sa
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 0x4996cafd4bf196e75570972f7b615183be2ffe7e168644bb94aacde821f1f9f0. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/edbe8b60-899f-4177-a129-e8ca1ea03089.json and https://artists.proofprofile.net/proofs/artist/edbe8b60-899f-4177-a129-e8ca1ea03089.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).