BNB Chain introduces a layer-2 chain in an effort to tackle its scalability issues. The new solution, called opBNB, was unveiled on June 19 and has been released as a testnet. This layer-2 scaling solution is built upon the Optimism OP Stack and is expected to enhance both security and scalability on the Binance blockchain network.
BNB Chain introduces layer-2 testnet powered by Optimism
BNB Chain has recently introduced a new layer-2 chain in an attempt to overcome its scalability challenges. Known as opBNB, it was unveiled on June 19 and is currently available as a testnet. This layer-2 scaling solution is built on the Optimism OP Stack, which is expected to enhance security and scalability on the Binance blockchain network.
opBNB operates as an Ethereum Virtual Machine (EVM) compatible layer-2 chain, enabling compatibility with Ethereum-based smart contracts, networks, and ERC-20 token standards.
The congestion and high fees experienced during periods of increased network demand are common issues in blockchains. Currently, BNB Chain claims to handle around 2,000 transactions per second with transaction costs averaging around $0.10.
According to the announcement, opBNB is capable of supporting over 4,000 transfer transactions per second, with average transaction costs lower than $0.005.
It also provides optimization for data accessibility, caching layers, and the submission process algorithm, enabling simultaneous operations. This allows for an increased gas limit of 100 million per block, compared to the 30 million allowed by Optimism.
BNB Chain referred to opBNB as its solution to the scalability challenge that has hindered the widespread adoption of blockchain technology.
Optimism employs Optimistic Rollups to scale transactions by assuming the validity of transaction data processed off the root chain until proven otherwise.
Furthermore, the RPC (remote procedure call) service layer simplifies integration by offering a user-friendly interface, allowing developers to focus on building applications without the complexities of Layer 2 scaling, as stated in the announcement.
However, some skepticism arose regarding this development. Adam Cochran, partner at Cinneamhain Ventures, criticized BNB Chain’s approach, pointing out that their scaling issues were due to centralizing an Ethereum fork and raising the gas limit to an unsafe level. Cochran suggested alternative options such as joining Optimism as a “superchain,” becoming a layer-2 directly on Ethereum, or even a layer-3 on Optimism or Arbitrum.
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