> For the complete documentation index, see [llms.txt](https://bitfi-2.gitbook.io/bitfi/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://bitfi-2.gitbook.io/bitfi/developer.md).

# Developer

- [bfBTC Overview](https://bitfi-2.gitbook.io/bitfi/developer/bfbtc-overview.md)
- [Deployed Contracts](https://bitfi-2.gitbook.io/bitfi/developer/bfbtc-overview/deployed-contracts.md)
- [Contract Parameters](https://bitfi-2.gitbook.io/bitfi/developer/bfbtc-overview/contract-parameters.md)
- [Contract ABI](https://bitfi-2.gitbook.io/bitfi/developer/bfbtc-overview/contract-abi.md)
- [bfUSD Overview](https://bitfi-2.gitbook.io/bitfi/developer/bfusd-overview.md)
- [Deployed Contracts](https://bitfi-2.gitbook.io/bitfi/developer/bfusd-overview/deployed-contracts.md)
- [Contract Parameters](https://bitfi-2.gitbook.io/bitfi/developer/bfusd-overview/contract-parameters.md)
- [Contract ABI](https://bitfi-2.gitbook.io/bitfi/developer/bfusd-overview/contract-abi.md)
- [Understand bfUSD APY](https://bitfi-2.gitbook.io/bitfi/developer/bfusd-overview/understand-bfusd-apy.md)
- [Using Contract](https://bitfi-2.gitbook.io/bitfi/developer/using-contract.md)
- [Stake bfBTC](https://bitfi-2.gitbook.io/bitfi/developer/using-contract/stake-bfbtc.md)
- [Unstake bfBTC](https://bitfi-2.gitbook.io/bitfi/developer/using-contract/unstake-bfbtc.md)
- [bfBTC Fees](https://bitfi-2.gitbook.io/bitfi/developer/using-contract/bfbtc-fees.md)
- [bfBTC Price Oracle](https://bitfi-2.gitbook.io/bitfi/developer/using-contract/bfbtc-price-oracle.md)
- [Stake bfUSD](https://bitfi-2.gitbook.io/bitfi/developer/using-contract/stake-bfusd.md)
- [Unstake bfUSD](https://bitfi-2.gitbook.io/bitfi/developer/using-contract/unstake-bfusd.md)
- [Redeem bfUSD](https://bitfi-2.gitbook.io/bitfi/developer/using-contract/redeem-bfusd.md)
- [bfUSD Fees](https://bitfi-2.gitbook.io/bitfi/developer/using-contract/bfusd-fees.md)
- [bfUSD Oracle](https://bitfi-2.gitbook.io/bitfi/developer/using-contract/bfusd-oracle.md)
- [Epoch and Ratio](https://bitfi-2.gitbook.io/bitfi/developer/epoch-and-ratio.md)
- [Epoch Updates](https://bitfi-2.gitbook.io/bitfi/developer/epoch-and-ratio/epoch-updates.md)
- [bfUSD Epoch Vesting](https://bitfi-2.gitbook.io/bitfi/developer/epoch-and-ratio/bfusd-epoch-vesting.md)
- [Underlying Asset Price Variation](https://bitfi-2.gitbook.io/bitfi/developer/epoch-and-ratio/underlying-asset-price-variation.md)
- [APY Calculation](https://bitfi-2.gitbook.io/bitfi/developer/epoch-and-ratio/apy-calculation.md)
- [Audit Report](https://bitfi-2.gitbook.io/bitfi/developer/audit-report.md)