Your device is composing this channel. Each programme is one WAI package of several components: the footage as AV1, decoded by your browser; the titles, lower thirds and the now and next cards as vector graphics, drawn here at your screen's size; the captions, where the film has them, as text; the idents' music as a score, synthesised here; the footage's sound as FLAC, decoded here, with an Opus copy your browser's own decoder can play instead; the ticker as signed state, replayed here. The panel below says which of them your device runs where, and why.

Before any piece of any component is shown, this tab checks the package's signed receipt, every object against the index the receipt binds, and every decoded output that has a signed digest against that digest. The list on the right is every check, as it happens. Who made each piece and the licence it is shown under are on the credits page; every package and the commands to check them yourself are on the verify page.