Mina
Mina is a new cryptocurrency with a constant size blockchain
...Using zero-knowledge technology, Mina is creating the infrastructure for the secure, democratic future we all deserve. Build on Mina with zkApps, smart contracts powered by zero-knowledge. The SDK, based on Typescript, will be available soon. The Mina blockchain remains ~22kb, enabling users to quickly and directly access the current state from their smartphone and other blockchains. Users today are compelled to hand over their data to centralized entities in order to participate in the modern world. But Mina’s zkApps, smart contracts powered by zero-knowledge, keep users in control of their privacy by validating and sharing proofs of their data, rather than the data itself. ...