# Overview Acre is a simple bitcoin-in bitcoin-out experience, to compound your bitcoin. ## Flow of Funds Bitcoin deposits into Acre are first used to mint tBTC (a fully permissionless and decentralized wrapped-bitcoin token) to Ethereum. tBTC is then used to provide economic security to protocols such as bitcoin-L2s, re-staking protocols, lending, and insurance markets across the EVM ecosystem and beyond. Bitcoin L2s are similar to all other proof-of-stake chains and provide rewards in exchange for economic security and bootstrapping liquidity. These rewards auto-compound into tBTC and are fully-redeemable to mainnet bitcoin. In the future, Acre may support additional forms of tokenized bitcoin for deposit in addition to the minting and movement of acreBTC, the deposit receipt ERC-4626 token for DeFi. ## Withdrawals BTC rewards can be withdrawn at any time, however there is a withdrawal delay and fee associated with each transaction. This withdrawal delay is due to pulling the underlying tokenized Bitcoin out of the smart contract and trustlessly redeeming back to the Bitcoin network. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.acre.fi/overview.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.