Nano (NANO) is a decentralized, peer-to-peer platform that is designed to be secure, feeless with faster transaction speed and unlimited scalability. Nano is built based on ledger technology called directed acyclic graph (DAG) which enables it to process 1,000 transactions per second without relying help from mining network. It can be considered as eco-friendly due to the low energy usage. Nano uses a system called Open Representative Voting (OVR) which allows holders to vote for a representative that will securely confirm block transactions.