PROZ may refer to: Protein Z, a protein ProZ.com, an online translators' community Pröz (real name Prosper Jemmet), American Hyperpop and Electronic dance music producer
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 0xe54cb12449b3dad8853488a1bc97677ea496a5ed0b15758f6fd1039cb0651ee7. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef9decd0-0a8f-443f-82cd-a37ccdc18e12.json and https://artists.proofprofile.net/proofs/artist/ef9decd0-0a8f-443f-82cd-a37ccdc18e12.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).