The rules fit on a napkin.

Any buy of 0.01 % of the supply or more is a swing at the piñata that is hanging. Sells do not count. The dev's own buys do not count.

Each piñata has a range of swings. Inside it, the hash of the block your buy lands in decides if this swing breaks it. That hash does not exist when you sign, so nobody can aim for it, the dev included. At the last swing of the range the piñata always breaks.

The slice goes to the wallets holding at the break that never sold. Shares follow balance × time held since that piñata was hung, capped at 5 % of the piñata per wallet, 200 wallets at most. The next piñata starts everyone from zero.

The dev has 24 hours after a break to hand out the candy. If not, the slice burns by itself: the dev signed that burn before launch. It never goes back to the dev. A coin with no swing for 7 days burns what is left.

At launch the dev buys a share of the supply and reserves 25 to 100 % of it for the piñatas (50 % by default). It is cut in four slices weighted 1, 2, 3 and 4: each piñata is bigger than the last.

Before the coin exists, the dev's wallet signs the burn of each slice. Pinata keeps those signed burns and can only do one thing with them: send them when the deadline passes. Pinata holds no funds and no keys.

Every coin page shows the dev bag in percent: reserved, delivered, burned, free, sold. Every dev sale is listed with its time. A dev who sells below the reserved slices turns them red: cancelled.