Soundpad markSoundpad

D ยท Verify

Check any logo

Every Soundpad logo is drawn from its own mp3: sha256 of the file picks one of 8 palettes and one of 4 forms, the waveform in 32 columns draws the picture. Drop the mp3, or pick a coin: the renderer runs here in your browser and compares the result with the image on IPFS, byte for byte.

The renderer is one module (soundlogo.mjs, mpg123 compiled to WebAssembly, own PNG encoder) shared by this page, the launch check and the keeper. Same mp3 bytes give the same PNG bytes in every browser and in node.