Barz may refer to: People Chris Barz, American musician Diane Barz (1943–2014), American judge Mike Barz (born 1970), American broadcaster and news anchor Monika Barz (born 1953), German feminist
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 0xb35db0249a9f5804939186470b0ff9c64292d2a970ea819b4551729906c25155. Chain 2 (Bitcoin): anchored in block 954043 (2026-06-17T04:15:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4011e329-4dd1-4963-8784-a8c97c38129f.json and https://artists.proofprofile.net/proofs/artist/4011e329-4dd1-4963-8784-a8c97c38129f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).