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May 14, 2020

Filecoin Testnet Phase 2 is Here!

Filecoin Testnet Phase 2 is Here!

Today is a big day for the Filecoin project. Six months ago, we launched the first phase of the Filecoin testnet. Since then, we have been bug fixing, conducting protocol reviews, making critical protocol and product improvements, performing optimizations, and working towards running networks with multiple interoperable nodes. Now, we are ready to launch Testnet Phase 2!

What’s in this release?

Testnet Phase 2 is the last major milestone before mainnet launch. Here’s a look at what it offers.

The Testnet Phase 2 release includes:

The Testnet Phase 2 release includes implementations that are nearly feature-complete. Over the next few weeks, we will complete feature development work on go-filecoin and lotus, upgrade our Proof-of-Replication (PoRep), and continue testing, bug fixes, and performance improvements. You should expect network upgrades and a couple more network resets as we work towards making sure Filecoin is ready for our mainnet launch in a few months.

How to participate in Testnet Phase 2

Join the network! Whether you are a storage miner, client, or developer, running a Filecoin implementation and joining the network is the best way to understand how Filecoin actually works and how it can support your use case. Visit the Filecoin docs site for instructions on how to run go-filecoin or lotus to join Testnet Phase 2.

Break the network and report bugs: If you want to be extra helpful, you can help us find bugs!

Start building! Every week, we see new developers exploring and using Filecoin as the storage platform for their applications. We’ve been featuring some of the use cases and developers in the community who are building essential tools and services through our Filecoin Community Highlights series. For example, Textile is developing plug-and-play tools for Filecoin application developers and Small Data Industries is leveraging the Filecoin network to create tools to archive and preserve the world’s artistic record.

If you’re a developer who is interested in building on the Filecoin network, we’d love to hear from you! Please reach out to us at

Have Questions?

Join us for our Testnet Phase 2 AMA with Juan Benet.

Join us Monday, May 18, at 7 PM PST, for a live Q&A with Juan Benet, founder of the Filecoin Project. For one hour, Juan and several Filecoin developers will be online to answer any questions you might have about Testnet Phase 2 and our path to mainnet.

Here’s how to participate:

We hope to see you there!


Thank you to the thousands of Filecoin miners, developers, clients, and testers who have been patiently testing and improving Filecoin over these last few months. You have made invaluable contributions to improving the security and performance of the Filecoin network and protocol.

Ultimately, Filecoin’s mission is to create a decentralized, efficient, and robust foundation for humanity’s information. Thanks to your efforts, along with the work of Filecoin’s research and engineering teams, we are all closer than ever to launching a public blockchain powered by useful work, a reliable storage service, and a thriving decentralized economy.

Thank you for being part of this global community. We look forward to continuing to build this technology and ecosystem with you.

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