Simon B edited this page Jan 21, 2019 · 26 revisions

Welcome to the Grin Wiki!

Lobby chat


Grin is an in-progress implementation of the MimbleWimble protocol.

Here's an overview:

  • Clean and minimal implementation, and aiming to stay as such.
  • Follows the MimbleWimble protocol, which provides great anonymity and scaling characteristics.
  • Cuckoo Cycle proof of work: Cuckaroo and Cuckatoo.
  • Relatively fast block time: one minute.
  • Fixed block reward over time with a decreasing dilution.
  • Transaction fees are based on the number of Outputs created/destroyed and total transaction size.
  • Smooth curve for difficulty adjustments.

To learn more, read our introduction to MimbleWimble and Grin or check out the FAQ.


Check the grin project website for the latest status.


To get involved, read our contributing docs.

Find us:

Getting Started

To learn more about the technology, read our introduction.

To build and try out Grin, see the Build Doc.


Grin likes itself small and easy on the eyes. It wants to be inclusive and welcoming for all walks of life, without judgement. Grin is terribly ambitious, but not at the detriment of others, rather to further us all. It may have strong opinions to stay in line with its objectives, which doesn't mean disrespect of others' ideas.

We believe in pull requests, data, and scientific research. We do not believe in unfounded beliefs.


Tom Elvis Jedusor for the first formulation of MimbleWimble.

Ignotus Peverell for the starting of Grin project and turning the MimbleWimble paper into real.

Andrew Poelstra for his related work and improvements.

John Tromp for the Cuckoo Cycle proof of work.

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