OP Labs, the developer of the Optimism network, launched a testnet version of its fault-proof system, according to an Oct. 3 blog post. Once it completes testing, it will allow for “a more decentralized and efficient Superchain,” the post stated. The new system is currently deployed to the Optimism Goerli network.
Currently, OP Stack-based networks use centralized sequencers to bundle transactions and submit them to Ethereum. Users cannot submit fraud proofs to block the sequencer if it submits incorrect data, creating the possibility of fraudulent transactions being confirmed if an attacker can control it. L2Beat has warned of this risk in its report on Optimism, stating, “users need to trust block Proposer to submit correct L1 state roots.”