> For the complete documentation index, see [llms.txt](https://legacy-10.gitbook.io/legacy/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://legacy-10.gitbook.io/legacy/buy-and-burn.md). # Buy & Burn Legacy's Buy & Burn mechanism takes 21% of total ETH fees generated by the protocol through [creating builders](/legacy/builders-phase.md) and uses those funds to buy Legacy on Uniswap v3 WETH/LEGACY pool and then automatically burns those tokens removing them from the circulation. The idea of Buy & Burn in Legacy was to replicate the amount of lost Bitcoins. It is said that around 13 - 35% of all Bitcoin tokens are gone through lost keys, thrown out hard drives as well as the ≈5% of Bitcoins that Satoshi Nakamoto owns. The estimations are quite inaccurate, some sources say it is 13%, some say it is closer to 25%. Legacy chose 21% for that matter. \ \ Setting 21% of all Legacy tokens that will ever be created for Buy & Burn should help create a squeeze in the supply of Legacy supporting the price appreciation long-term. 10% of total ETH fees generated by Legacy protocol are sent to TitanX's Buy\&Burn. ### Smart Contract Methods User Incentive Fee: Protocol Participants get an incentive fee of 0.66% ETH from collected fees for calling the Redistribute Paydays + B\&B smart contract function which distributes the ETH between paydays for stakers and buy and burn. Similar incentive fee reward of 0.66% is granted for triggering Buy & Burn function thats buys Legacy from the open market via Uniswap v3 WETH/LEGACY pool and burns all the amount of purchased Legacy tokens. Both actions can be done in [Legacy dApp](https://app.legacy.diamonds/).