What is the Arbitrum currency, what are its advantages, and what are its competing currencies?

Arbitrum is a layer 2 scaling solution for Ethereum that uses optimistic rollups to increase transaction throughput and reduce fees. The native currency of Arbitrum is called ARB 1.

https://coinmarketcap.com/alexandria/article/what-is-arbitrum

https://coinmarketcap.com/alexandria/article/arbitrum-vs-optimism-the-ultimate-comparison

https://coinmarketcap.com/currencies/arbitrum/

https://ethplorer.io/address/0xb50721bcf8d664c30412cfbc6cf7a15145234ad1#pageTab=holders&tab=tab-holders