thumb|KDE mascot, Konqi, managing and moving windows KWin is a Wayland compositor and an X window manager. It is released as a part of KDE Plasma, for which it is the default window manager. KWin can
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 0x1ac21d3028075ce8205d28eced8faa7db1e23e53da75bd3f0699a8c34720c9e6. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5178e633-3787-4a2e-a6e7-c0b4efdc5e0d.json and https://artists.proofprofile.net/proofs/artist/5178e633-3787-4a2e-a6e7-c0b4efdc5e0d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).