Ren (REN) is an open protocol built to provide interoperability and [liquidity](https://coinmarketcap.com/alexandria/glossary/liquidity) between different [blockchain](https://coinmarketcap.com/alexandria/glossary/blockchain) platforms.
To learn more about this project, check out our deep dive of [Ren](https://coinmarketcap.com/alexandria/article/bringing-bitcoin-to-defi-a-complete-beginners-deep-dive-into-renvm).
Formerly known as Republic Protocol, Ren launched RenVM, its virtual machine mainnet, in May 2020, having completed a $34 million initial coin offering ([ICO](https://coinmarketcap.com/alexandria/glossary/initial-coin-offering-ico)) in 2018.
The protocol’s native token, REN, functions as a bond for those running nodes which power RenVM, known as Darknodes.
Ren aims to expand the interoperability, and hence accessibility, of decentralized finance ([DeFi](https://coinmarketcap.com/alexandria/article/what-is-decentralized-finance)) by removing hurdles involved in liquidity between blockchains.