What is $ARB ? Simply put, it is an expansion overpass built for the "congested highway" of Ethereum.
The core goal is to solve the problems of slow speeds and high fees on Ethereum. Playing Web3 applications on it is faster and costs less.
Currently, there are two main "ramps":
Arbitrum One: The main highway. Important applications run on it, especially various DeFi (decentralized finance) projects, such as lending and trading platforms. This road values security the most and fully inherits Ethereum's security.
Arbitrum Nova: A dedicated fast lane. Mainly used for applications like games and social media that require high transaction volumes but are extremely cost-sensitive. It sacrifices a bit of trust level in exchange for ultra-low fees and faster withdrawal speeds, supported by a data team to ensure safety.
The core engine driving these is called Arbitrum Nitro:
This is their foundational technology that all products rely on. It makes everything possible.
Two main scaling methods based on Nitro:
Arbitrum Rollup: This is what Arbitrum One uses. The principle is to package and compress a bunch of transactions, then centrally publish them to Ethereum. The biggest advantage is that it completely shares Ethereum's security.
Arbitrum AnyTrust: Nova uses this. It is a variant of Rollup and requires reliance on an external group to ensure data is always available. The trust requirement is slightly lower than Rollup, resulting in lower costs and faster withdrawals.
Future expansion platform: Orbit
This is like opening permissions, allowing everyone to utilize the powerful engine of Arbitrum Nitro to customize and build their own smaller "fast lanes," which ultimately connect to the larger Arbitrum network, forming a larger ecosystem.
Summary: Arbitrum is a scaling tool for Ethereum, providing two channels for applications to choose from through different technologies, and opening up foundational technology for further ecosystem expansion, with the core pursuit being faster and cheaper.
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