Spacemesh is a team from Israel that aims to realize Satoshi Nakamoto's original intention in the Bitcoin white paper through a more reasonable protocol design - a true peer-to-peer electronic cash network, and support smart contracts in Layer 2.

Spacemesh is a decentralized platform based on the new blockmesh, rather than blockchain, structure. Behind the scenes, Spacemesh uses a novel space-proof protocol composed of meshes (hierarchical directed acyclic graphs).

Users who want to run the Spacemesh protocol need to reserve some disk space. Like other blockchain systems, Spacemesh requires users to prove that scarce resources have been invested in the system. This is required to ensure system security. In Spacemesh, this resource is disk space, which millions of people around the world have access to on their home PCs, meaning joining Spacemesh is essentially free for home users. Using disk space makes the Spacemesh protocol ASIC resistant and consumes significantly less energy than proof-of-work based blockchain systems.