Metis

Metis has developed an Optimistic Rollup solution to bundle and sequence transactions on the layer above Ethereum and then send that data back as one transaction to the Ethereum Layer 1 main chain. This way, we are able to offer extremely fast transactions that take just a few seconds and cost just a few cents, while still maintaining the security of Ethereum Layer 1.

The Metis Layer 2 network assumes all transactions are valid until proven otherwise (hence the “Optimistic” part of “Optimistic Rollup”). These are called fraud proofs which are submitted in case the transactions are invalid. Validators post a bond, and this is slashed for invalid transactions. This is rigorously verified by Rangers who are financially incentivized auditors or validators – they will stake and mine Metis tokens by verifying transactions.