8faba4ef83
* Chunk generation and validation * Rename chunk -> segment * Missed a few * Generate and validate merkle proof * Fix bugs in generation and validation * Add test for unprunable MMR of various sizes * Add missing docs * Remove unused functions * Remove segment error variant on chain error type * Simplify calculation by using a Vec instead of HashMap * Use vectors in segment definition * Compare subtree root during tests * Add test of segments for a prunable mmr * Remove assertion * Only send intermediary hashes for prunable MMRs * Get hash from file directly * Require both leaves if one of them is not pruned * More pruning tests * Add segment (de)serialization * Require sorted vectors in segment deser * Store pos and data separately in segment * Rename log_size -> height * Fix bitmap index in root calculation * Add validation function for output (bitmap) MMRs * Remove left over debug statements * Fix test * Edge case: final segment with uneven number of leaves * Use last_pos instead of segment_last_pos * Simplify pruning in test * Add leaf and hash iterators * Support fully pruned segments * Drop backend before deleting dir in pruned_segment test * Simplify output of first_unpruned_parent |
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|---|---|---|
| .cargo | ||
| .ci | ||
| .github | ||
| .hooks | ||
| api | ||
| chain | ||
| config | ||
| core | ||
| doc | ||
| etc | ||
| keychain | ||
| p2p | ||
| pool | ||
| servers | ||
| src | ||
| store | ||
| util | ||
| .editorconfig | ||
| .gitignore | ||
| azure-pipelines.yml | ||
| Cargo.lock | ||
| Cargo.toml | ||
| CODE_OF_CONDUCT.md | ||
| CONTRIBUTING.md | ||
| LICENSE | ||
| README.md | ||
| rustfmt.toml | ||
| SECURITY.md | ||
Grin
Grin is an in-progress implementation of the Mimblewimble protocol. Many characteristics are still undefined but the following constitutes a first set of choices:
- Clean and minimal implementation, and aiming to stay as such.
- Follows the Mimblewimble protocol, which provides hidden amounts and scaling advantages.
- Cuckoo Cycle proof of work in two variants named Cuckaroo (ASIC-resistant) and Cuckatoo (ASIC-targeted).
- 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.
Status
Grin is live with mainnet. Still, much is left to be done and contributions are welcome (see below). Check our mailing list archives for the latest status.
Contributing
To get involved, read our contributing docs.
Find us:
- Chat: Keybase, more instructions on how to join here.
- Mailing list: join the ~Mimblewimble team and subscribe on Launchpad.
- Twitter for the Grin council: @grincouncil
Getting Started
To learn more about the technology, read our introduction.
To build and try out Grin, see the build docs.
Philosophy
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.
Credits
Tom Elvis Jedusor for the first formulation of Mimblewimble.
Andrew Poelstra for his related work and improvements.
John Tromp for the Cuckoo Cycle proof of work.
License
Apache License v2.0.