Meet Grin.

 The private and lightweight
mimblewimble blockchain.

Get startedGithub


Currently Live: mainnetGrin was launched on Jan. 15th 2019. It’s very young and experimental. Use at your own risk!

What’s Grin?

Electronic transactions for all. Without censorship or restrictions.

Grin empowers anyone to transact or save modern money without the fear of external control or oppression. Grin is designed for the decades to come, not just tomorrow. Grin wants to be usable by everyone, regardless of borders, culture, skills or access.


Grin has no amounts and no addresses. Transactions can be trivially aggregated. To hide where a newly created transaction comes from, it gets relayed privately (a “random walk”) among peers before it is publicly announced.


MimbleWimble leverages cryptography to allow most of the past transaction data to be removed. This guarantees Grin won’t collapse under its own weight in the long term.


Grin is developed openly, by developers distributed all over the world. It’s not controlled by any company, foundation or individual. The coin distribution is designed to be as fair (but not gratis) as is known to be possible.


Grin is launched fairly — free of ICO, pre-mine or founder’s reward. We rely on donations to keep working on the project. Support the movement by purchasing some swag or making a donation.

Donate to Grin

Friends of Grin

Buy Swag tokens now before they become accessible for bitcoin trading on the major exchanges.


If you’re an individual, company or institution excited about the potential of Grin or MimbleWimble, we humbly ask if you’d consider making a financial contribution to the project’s development. We’re experimenting with a 100% community-driven funding model.

We sincerely thank all our past patrons for their support.


mainnet, Onwards!

Grin mainnet was launched on Jan. 15 2019.

Get started here!

Learn more

floonet, Upwards!

Grin floonet is our official testnet. We need your help testing: either compile from the source or download the grin binary and join us.

Learn more


Help make Grin better.