# Chain / BLAST L2

The 100x's on-chain settlement protocol is deployed to [BLAST](https://blast.io/en) .

Blast is an Ethereum L2 that has natively yielding USD and ETH. Based on the OP Stack. Being an Optimistic Rollup allows for cheap gas and speed compared to Ethereum mainnet. To learn more about adding blast as a network to an evm wallet see the blast docs [here](https://docs.blast.io/using-blast).

Unlike other L2s, Blast provides a risk free rate, for usdb the rate is the US T-bill rate and for eth the rate is the Ethereum mainnet staking rate. This feature alone allows user's of the 100x exchange to generate yield on their collateral.  Blast also provides exceptional incentives to all users, meaning 100x users benefit from these.

Blast is the perfect place for 100x, giving user's a seamless experience with clear opportunities for generating yield at all times! 

💯x💥

### USDB

Blast native usd. Backed by sDAI in the BLAST bridge contract. 

{% embed url="<https://docs.blast.io/about-blast#t-bill-yield>" %}


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