# Blast Bridge (blastbridge.io)

> Blast Bridge is a guide to the Blast network: the EVM-compatible Ethereum L2 (optimistic rollup) with native yield for ETH and stablecoins. Funds are bridged through the official Blast app at https://blast.io.

## Key facts
- Blast is the only Ethereum L2 with native yield for ETH and stablecoins.
- ETH on Blast earns about 4% from Ethereum L1 staking (initially via Lido), passed to users through auto-rebasing ETH.
- Stablecoins bridged to Blast become USDB, an auto-rebasing stablecoin earning about 5% from MakerDAO's on-chain T-Bill protocol. USDB is redeemable for DAI when bridging back to Ethereum.
- The default interest rate on other L2s is 0%.
- ETH itself (not WETH or stETH) is natively rebasing. EOA balances rebase automatically; smart contracts can opt in. USDB rebases for EOAs and contracts; contracts can opt out.
- Blast returns net gas revenue to dapp developers programmatically. Developers can keep it or subsidize gas for users.
- 50% of the Blast airdrop is reserved for developers.
- Yields are variable and not guaranteed.

## Pages
- [Home: Blast Bridge, native yield, comparison and FAQ](https://blastbridge.io/)
- [What is Blast: the Blast network explained](https://blastbridge.io/what-is-blast/)
- [How to bridge to Blast: step-by-step guide, chain ID 81457, RPC https://rpc.blast.io](https://blastbridge.io/how-to-bridge/)
- [USDB: Blast's auto-rebasing yield stablecoin](https://blastbridge.io/usdb/)
- [Blast airdrop, Blast Points and Blast Gold](https://blastbridge.io/airdrop/)
- [Developers: gas revenue, yield modes, contract addresses](https://blastbridge.io/developers/)

## Official resources
- [Blast app and bridge](https://blast.io)
- [Blast documentation](https://docs.blast.io)