Hey Product Hunt 👋 Pixel Chain is cryptographic art. No tokens, no blockchain — just SHA-256 standing between you and every color you want to use. In most pixel editors you pick a color and it appears. Here you pick a color and the app tells you no. From the second cell onward, a color is legal only if SHA-256(everything painted so far + that candidate) ends in enough trailing zero bits. Level 1 demands 11 of them. Level 10 demands 20. That filter is brutal. At level 1 roughly 8,192 colors survive out of all 16,777,216 — 99.95% rejected, one in two thousand. At level 10 about 16 survive. One in a million. So every stroke sweeps the entire color space, collects the handful the hash will sign off on, and hands you the closest one to what you asked for. You aim. The chain decides. The palette you walk away with isn't one you chose — it's one you were issued, and it belongs to that picture alone. That's where the look comes from. It's whatever is left standing after the hash throws out everything else. Happy to answer anything about the chain, the color search, or how the seed keeps pieces reproducible. https://apps.apple.com/app/id680...

Pixel Chain

A pixel editor where SHA-256 decides your colors

A pixel editor where SHA-256 decides your colors