> For the complete documentation index, see [llms.txt](https://docs.chainspin.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.chainspin.com/spin-token/buyback-and-burn.md).
# Buyback & Burn
Scarcity is the promise most tokens make and then quietly break. $SPIN's version is mechanical, weekly, and checkable.
Start with the ceiling: the supply is fixed at 1,000,000,000 and the contract has no way to mint more. The number can only go down. Here is what pushes it down.
Every week, a fixed share of Chainspin's Generated Revenue, total wagers minus player winnings and bonuses, buys $SPIN on the open market:
| Room | Share of weekly revenue to the buyback |
| ----------------------------------- | -------------------------------------- |
| Casino | 12% |
| Sportsbook | 15% |
| Prediction Markets (when they open) | 8% |
Everything bought: 60% is burned forever. 40% goes to stakers.
The maths is simple: for every $100,000 the casino generates in a month, $12,000 buys $SPIN from the market. $7,200 of that is destroyed permanently. $4,800 is paid to stakers. Double the revenue and both numbers double with it, the burn is not a marketing budget, it is a percentage.
Three things make this different from the usual burn promise. The buyback starts in the first hour of listing, so real revenue is standing on the buy side of the market from day one. The first three weekly burns complete before a single vested token can even be claimed (the [Vesting](/spin-token/vesting.md) section explains why). And every burn is a public transaction: the buyback wallet, the burn address and the running totals live on an open dashboard, so anyone can rebuild our numbers on-chain without trusting a word we say.
Because the tokens paid to stakers are bought from the open market rather than minted, rewarding the community adds buying pressure instead of sell pressure. What happens to that 40% once it reaches stakers is in the [Rewards](/rewards.md) section.
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