opBNB is a Tier 2 scaling solution for BNB Chain. It is built on the OP network and offers users faster and cheaper transactions through optimistic rollups.
What is opBNB?
opBNB is an optimistic rollup network built to scale BSC. It is aimed to take the majority of the workload away from the main network and to ensure that the entire network performs better against increasing demand. It uses a sorter for processes and a Batcher to pack them into batches.
The opBNB network tries to achieve high throughput without sacrificing security by contracting the mainnet (BSC) for final verification of transactions performed at the execution layer. In addition, a validator is used to ensure the integrity of these transactions.
What is BNB Chain?
BSC is an EVM compatible Layer 1 network. BSC was built at the end of the Ethereum network’s scalability issues and develops a network compatible with the Ethereum network, offering users an alternative from the congested ETH network.
BSC separates the execution and consensus layers of the Ethereum network and seeks to develop a more agile network by creating a more energy efficient consensus layer to work with the adopted execution layer. While the BSC network used the Proof of Stake (PoS) consensus algorithm, the Ethereum network was still using the Proof of Work (PoW) consensus algorithm at that time.
The difference in the consensus system and a few other changes made BSC significantly faster than the Ethereum blockchain. BSC supports applications built using infrastructures of the Ethereum network by running a virtual machine similar to Ethereum’s virtual machine and smart contract language.
Developers on Ethereum can create new applications or deploy their existing applications to BNB Chain without learning a new language or making any major changes to the application’s code base. BSC is a sovereign network but can communicate with other compatible networks such as Ethereum, Phantom and Polygon via independent bridges.
Features of OpBNB
Some features of the OpBNB network are:
Scalability
Tier 1 blockchains such as BSC and Ethereum handle all core functions of network transactions (execution, consensus, consensus, data availability) at the network level. This means there is a risk of network congestion or spikes in traffic during peak periods; this results in high transaction fees, slow transactions and poor user experience.
Layer 2 networks are an execution layer that builds on top of the mainnet to enable scalability, offering users lower fees and faster transactions. In the case of opBNB, an optimistic rollup is used, where transactions that occur on opBNB are aggregated into a single transaction before being sent to BNB.
interoperability
Because OpBNB is built on top of the OP Stack, it can interoperate with other Tier 2 platforms that use the OP Stack, such as Optimism and potentially Base. Moreover, opBNB’s EVM compatibility and Solidity support help to create an open and collaborative system across other OP chains, encouraging innovation.
While it’s unclear whether OpBNB will be part of the Optimism Super Chain, the fact that it’s built on the BNB Chain rather than Ethereum sets it apart from many other OP chains.
Secured by BNB Chain
BNB Chain is a Proof of Stake network where validators transfer their assets to the network and keep BSC secure by scanning new blocks for potential issues. opBNB leverages this security infrastructure to secure its network by broadcasting proof of every transaction made on its network to the mainnet.
The mainnet can obtain information about the integrity of these transactions at any time through its data availability layers. Validators at BSC will scan this data and hash it to the BSC chain if there is no inconsistency. To successfully bypass the OpBNB network, a hacker must also be able to bypass the security system in the BSC network.
How OpBNB Works
It inherits the extra features of the OP stack in addition to what can be achieved with optimistic rollups.
By leveraging the OP Stack, the opBNB has inherent modularity. Because it is a modular network, transactions on the opBNB network run independently but synchronize with each other to form a dynamic system. opBNB separates the data availability (DA) layer from the execution layer; where the separation of the DA layer also allows the selection of different DA options and switching between DA schemes as the case may be.
