December 14, 2019 Filecoin launches open-source public testnet.

Following over 2 years of development following a token sale that raised over $250m, this release is a key milestone for the distributed file storage protocol based on IPFS. Prospective storage miners can store and retrieve real data on the testnet, and clients can participate in deal-making workflows and access storage/retrieval functionality. The team plans to iterate on this testnet throughout the next several months, and aim to release a mainnet in late 2020.