Optimism Network has released a secure testnet
The OP Goerli testnet was the platform for OP Labs’ modular, fault-tolerant technology.
According to a blog post published on October 3rd, OP Labs, the company behind the Optimism network, has released a testnet version of their bulletproof system.
Centralized sequencers are now used by OP Stack-based networks to batch transactions before submitting them to Ethereum. To prevent fraudulent transactions from being verified should an attacker get control of the sequencer, users cannot provide fraud proofs to prevent it from submitting wrong data.
Networks built on top of the OP Stack with the intention of becoming optimistic rollups, similar to Ethereum, include Optimism and Base. In an article published in January 2021, Ethereum co-founder Vitalik Buterin proposed that, in order to prevent fraudulent withdrawals from Ethereum, optimistic rollups should let users to submit fraud evidence.
The report also stated that the new system is modular, so that different networks may create their own methods of combating fraud. There are three parts to this system: the fault-proof program (FPP), the fault-proof virtual machine (FPVM), and the “dispute game protocol.” Given the modular nature of these three parts, it becomes possible for any network to “custom-build a fault proof system.”
The essay claims that this will increase the Optimism Superchain’s variety, leading to a safer environment as a whole. Zero-knowledge proofs (ZK-proofs) were also mentioned as a potential method of making networks more resistant to fraud. In most cases, ZK-proofs are used in zero-knowledge rollups instead of Optimistic ones.
OP Labs has been working on a plan to combine many blockchains into one massive one they’re calling the “Superchain.” To this end, it developed the OP Stack, a suite of programs for creating one’s own blockchain networks. To achieve this similar goal using Avail as the foundation layer instead of Ethereum, the Avail network has developed “OpEVM” software. Other alternatives to Superchains include Polygon’s ZK Supernets and the zero-knowledge Ethereum Virtual Machine Hyperchain.