XLNT (eXtended Language for Windows NT) is a scripting language for Windows platforms based on the DCL language for OpenVMS systems. Developed by Advanced Systems Concepts, Inc. in 1997, XLNT allows W
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0d30115d8785f35b8d4ecc2fc911703c0fe741d8c104b8352ed5a78c52878a. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e1a1a743-ef35-4e09-afac-a810851e393f.json and https://artists.proofprofile.net/proofs/artist/e1a1a743-ef35-4e09-afac-a810851e393f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).