This page is the demo

Several classes in one envelope.
Rebuilt and checked in this tab.

wai.film.reel wai.audio.score reel + mixdown In the standard

One wai.film.reel carries a sealed world, the reel's shots and an embedded score; the reel hash binds them, and a film receipt can sign it. This tab re-derives the hashes and checks the world's op signatures. Your browser runs the reference implementation, compiled to WebAssembly, to re-derive the reel hash and the per-frame root (reel-equivalence) and the score's mixdown hash (mixdown-equivalence), then plays them in sync: the figure rendered through the cuts, the music from the embedded score. The readout shows the size of the reel file.

—
world tick — shots — camera fov — reel hash — mixdown hash — reel file —

One envelope, several classes

The reel nests a sealed wai.world.replay, a set of camera shots and a wai.audio.score, each a registered class with its own equivalence. The reel hash binds them into one object that a film receipt can sign.

What this tab checks

The picture re-derives to a Merkle root over per-frame BLAKE3(world state || camera pose); the sound re-derives to the score's mixdown hash. Both are checked against the corpus's recorded hashes, in this tab. No receipt signature is checked here.

Played in sync

The render, projecting the world through the cut cameras, and the Web Audio playback of the embedded score are the sink's presentation. The wire carried instructions; this tab rebuilt the content and checked it.

The reel on this page is a vector from the film conformance corpus, and the reference engines are Apache-2.0 in the open-standards repository. The figure is the embedded skeletal world drawn by forward kinematics; the cuts are the reel's shots, one of which revisits an earlier beat from a high angle; the music is the embedded score.