PrefaceOn March 23rd, Arbitrum token ARB, an Ethereum Layer2 Rollup solution project, started airdrop, and so far, Arbitrum TVL has reached $2.35B, far ahead of competitor Optimism's $891.41M TVL. This article will discuss Arbitrum's technology, ecosystem and tokens, and look into the reasons for its popularity and investment opportunities. *This article is intended as a research discussion only and may contain biases and errors in facts, data, and opinions, and does not constitute ...