Prax may refer to: Prax (malware), or Regin, a malware and hacking toolkit Prax Group, operators of Lindsey Oil Refinery, North Killingholme, North Lincolnshire, England Praso, Italy (German: Prax
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 0xe010bf926d169aa522e8ea9fd299b343b9d51e1519333fecef38b86a9d48957b. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e517c6c9-91df-484e-b751-e7318a667032.json and https://artists.proofprofile.net/proofs/artist/e517c6c9-91df-484e-b751-e7318a667032.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).