UX, Ux, or ux may refer to: Astronomical objects UX Antliae, a post-AGB star in Corona Borealis UX Arietis, a triple star system UX Lyncis, a dim, red-hued star in Lynx UX Tauri, a binary star sy
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 0x62760cf63f6a609c43076c0750f0d74af9c08a739b2915b8fdd1fdc69f6d8f0d. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/838eebcd-ee09-4d39-ae93-f6b3518ada66.json and https://artists.proofprofile.net/proofs/artist/838eebcd-ee09-4d39-ae93-f6b3518ada66.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).