Author: @OvrCldJonny Compiler: Cointime Lu Tian

A new competitor has entered the Rollup field: opBNB!

Binance recently announced an optimistic rollup product called opBNB, which is already running on the testnet.

So, did Binance directly fork Optimism and launch its own L2 solution?

Here's a brief overview:

opBNB is based on a base version of the EVM-compatible Optimism OP Stack.

Unlike most other Optimistic Rollups, which are based on the Ethereum mainnet, this rollup is built on top of the existing BNB chain.

Binance said that opBNB will increase the gas limit to a staggering 100M, exceeding Optimism’s 30M gas limit (according to their article).

Binance claims that opBNB can handle 4,000 transfers per second, with average transaction costs of less than half a cent.

BNB will remain the native currency of the opBNB chain.

The new rollup will be “natively integrated” with the BNB ecosystem, meaning we can expect a similar on-and-off channel experience to using Binance CEX directly as on the existing BNB chain.

In their documentation, they seem to hint that Proto-Danksharding and Danksharding will be implemented for existing BNB chains where possible.

In addition, Binance also announced its own dedicated storage layer called BNB Greenfield.

Binance seeks to compete in gaming and NFT space

The Binance team seems to want to be competitive in the gaming and NFT space to compete with companies like Polygon due to their lower fees and easy onboarding experience. In their documentation and announcements, they mention gaming, the metaverse, and social networks multiple times.

Competition in the general rollup field is fierce

At present, the competition in the general rollup field is very fierce. As more and more ZK-rollups enter the space occupied by existing optimistic rollups, developer attention becomes increasingly fragmented.

Binance relies on existing BSC ecosystem to promote opBNB chain development

The @BNBCHAIN ​​team is banking on the existing large BSC ecosystem to grow the ecosystem by migrating to the new opBNB chain. Will their existing communities be able to weather the storm? Will this ultimately lead to fragmentation of their existing two-chain user base and liquidity?

opBNB will interoperate with other L2 platforms

Their documentation states that opBNB will be interoperable with other L2 platforms such as Optimism. Does this mean it will be connected to @optimismFND's hyperlink? If so, then a lot of interoperability between opBNB, Optimism, and Coinbase’s @BuildOnBase L2 is coming.

More references: https://www.bnbchain.org/en/blog/introducing-opbnb-unleashing-a-new-era-of-scalability/

https://docs.bnbchain.org/opbnb-docs/docs/intro/