Creator fees of $ACC land on the launch wallet, and are forwarded by hand to the keeper. Everything above the keeper's 0.05 SOL fee reserve counts as forwarded: nine tenths of it is the bank, one tenth pays the server and the RPC.
At 00, 06, 12 and 18 UTC the keeper buys $ACC on the open market for the amount of the current step and burns every token it gets. Step 0 is 0.01 SOL. Each step after it is exactly twice the last.
If the bank cannot cover the step, the step waits. The keeper looks again every fifteen minutes and buys the moment it is covered; the next window is then six hours from that buy.
Twenty four hours short and the epoch ends: the whole bank goes into one last buy and burn, and the ladder starts again at 0.01 SOL with the epoch number one higher.
Step n costs 0.01 x 2^n SOL. Step 5 is 0.32 SOL, step 7 is 1.28 SOL, step 10 is 10.24 SOL. Reaching step n has cost 0.01 x (2^(n+1) - 1) SOL in all, so every rung costs about as much as the whole climb underneath it.
The four windows a day are 00:00, 06:00, 12:00 and 18:00 UTC. The buy itself runs at a random minute inside the ten minutes after the mark. The window is public and the minute is not, which is as much as a schedule can do against a front runner.
The bank is the keeper's balance, minus a 0.05 SOL reserve it never spends on anything but network fees, minus the tenth that pays for the server and the RPC. Everything else is the ladder's.
A step that is not covered at its window does not shrink and is not skipped. It waits, and the keeper rechecks every fifteen minutes. The moment the bank covers it, it buys, and the ladder moves on from that buy.
If a step has been waiting for twenty four hours and the bank still does not cover it, the epoch collapses. The keeper spends the whole bank in one buy, burns it, and writes ACC e<n> COLLAPSE <SOL>. The epoch number goes up by one and the next step is 0.01 SOL again.
No single buy may move the price more than three percent. A step that would is cut into equal parts, thirty to sixty seconds apart, and every part carries the same memo with its own part number, so the chain shows one step in several pieces rather than several steps.
Every burn carries its memo in the same transaction: ACC e<epoch> s<step> <SOL>, or ACC e<epoch> COLLAPSE <SOL>. That is the whole record. If this site vanished, the ladder could be read back off the keeper's signatures.
If the keeper is down when a window passes, nothing accumulates. It comes back, does the step it was on, and carries on from there.
The keeper buys on the open market like anybody else and burns what it buys. There is no mint, no tax and no allowlist.
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