BOB (Build on Bitcoin) testnets provide a sandbox environment for developers to build and test decentralized applications across Ethereum and Bitcoin ecosystems, all while leveraging the capabilities of Optimism’s OP Stack.
These available testnets are ideal for experimenting with cross-chain development, including Bitcoin Ordinals and EVM-compatible smart contracts.
<aside> <img src="/icons/laptop_gray.svg" alt="/icons/laptop_gray.svg" width="40px" /> BOB Testnet
</aside>