Optimistic Roll-up Technology
Optimistic Rollup gets its name from its “optimistic” approach. This technology assumes that transactions are correct and processes them quickly. Transactions are processed on the Optimism coin network and the results are periodically “rolled up” to the Ethereum main chain, i.e. sent in bulk. The working principle of Optimistic Rollup starts with users sending their transactions to the Optimism network. These transactions are processed and verified by Optimism’s special nodes. Then, the transactions are sent in bulk to the Ethereum main chain and recorded as a single transaction on Ethereum.
This system reduces transaction costs and increases speed because there is no need to pay separate Ethereum gas fees for each transaction. However, one disadvantage of this system is the waiting time required for transactions to be transferred to the Ethereum main chain. This period is usually around 7 days and is called the “exit time.”
Technical Architecture of Optimism
Optimism’s technical architecture consists of several key components. The first is the Sequencer , a central component that queues and processes transactions . The Sequencer processes transactions quickly and provides immediate feedback to users.
The second important component is Rollup Contracts, which reside on the Ethereum main chain. These contracts store state changes and transaction data on the Optimism network.
The third component is the Optimism Virtual Machine (OVM), which is a modified version of the Ethereum Virtual Machine. The OVM ensures compatibility with Ethereum and meets the specific requirements of Optimism.
The fourth component, the State Commitment Chain, periodically records a summary of Optimism’s state, which is important for security and verifiability.
The Canonical Transaction Chain maintains a sequential record fax lists of all transactions that occur on the Optimism network. Working together, these components ensure that Optimism is a fast, secure, and Ethereum-compatible scaling solution.
Optimism’s Security Model and Verification Mechanism
Optimism’s security model is based on a “fault proof” system. This system assumes that transactions are correct, but allows any participant to challenge their validity. When a challenge occurs, the transaction what is kava (kava)? is re-run on the Ethereum main chain and checked for correctness.
The verification mechanism starts with the transactions being alb directory processed on the Optimism network and the results being sent to Ethereum. Then, a one-week “dispute period” begins. During this period, any participant can claim that a transaction is invalid. In the event of a dispute, the transaction is re-run on Ethereum. If the dispute is justified, the erroneous transaction is rolled back and the disputant is rewarded. If the dispute is unjustified, the disputant is penalized. This system ties the security of Optimism to the security of Ethereum and prevents malicious actors from manipulating the system.
