Neo

Neo is one of the oldest smart-contract blockchains, with NEO for governance and GAS for fees; its foundation faces a founder dispute over treasury control.

Neo is a smart-contract blockchain founded in 2014 as Antshares. Its current network, Neo N3, runs smart contracts and digital assets, and Neo X is a separate sidechain compatible with Ethereum tools.

Neo has two tokens. NEO, with a fixed supply of 100 million and no fractions, is used to vote for 21 committee members; the top seven produce blocks using delegated Byzantine Fault Tolerance (dBFT). GAS pays network fees, which are burned. New GAS is minted every block: 80% goes to NEO holders who vote for elected members, 10% to all NEO holders and 10% to the committee. Since April 2026 blocks come every 3 seconds with 1 GAS each.

In 2026 the co-founders Da Hongfei and Erik Zhang went public with a dispute over the Neo Foundation. CoinDesk reported a treasury of about $460 million, with most native tokens in a wallet controlled by one founder. Each has proposed a different restructuring, and no outcome had been confirmed by October 2026.