Xara is an international software company founded in 1981, with an HQ in Berlin and development office in Hemel Hempstead, UK. It has developed software for a variety of computer platforms, in chronol
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 0x65eb8f42335af91f5369801527f6795fe6f2a80403b25ef4eebf87327762a73f. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/778773ad-c8a9-4bef-b478-76aafde3b462.json and https://artists.proofprofile.net/proofs/artist/778773ad-c8a9-4bef-b478-76aafde3b462.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).