Minimal implementation of the Mimblewimble protocol.
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Yeastplume 3f4f165e0b
PMMR Backend Support for append_pruned_root (Continued) (#3659)
* refactor prune_list with aim of allowing pruned subtree appending

* add test coverage around pmmr::is_leaf() and pmmr::bintree_leaf_pos_iter()

* comments

* cleanup

* implement append pruned subtree for prune_list

* commit

* we can now append to prune_list

* fix our prune_list corruption...

* rework how we rewrite the prune list during compaction

* test coverage for improved prune list api

* continuing to merge

* finish merge, tests passing again

* add function pmmr_leaf_to_insertion_index, and modify bintree_lef_pos_iter to use it. Note there's still an unwrap that needs to be dealt with sanely

* change pmmr_leaf_to_insertion_index to simpler version + handle conversion between 1 and 0 based in bintree_leaf_pos_iter

Co-authored-by: antiochp <30642645+antiochp@users.noreply.github.com>
2021-11-09 15:34:10 +00:00
.cargo windows cargo settings (#2632) 2019-02-26 16:48:45 +00:00
.ci Change connection name for CI Release (#3653) 2021-08-18 15:45:52 +02:00
.github Rename Floonet to Testnet (#3431) 2020-10-07 09:36:02 -04:00
.hooks Update copyright year to 2021 (#3592) 2021-03-10 10:14:48 -05:00
api Rust 2021 Macro Warning Cleanup (#3658) 2021-11-02 15:10:01 +00:00
chain PMMR Backend Support for append_pruned_root (Continued) (#3659) 2021-11-09 15:34:10 +00:00
config bump to 5.2.0-alpha.1 on master (#3652) 2021-08-19 09:06:52 +02:00
core PMMR Backend Support for append_pruned_root (Continued) (#3659) 2021-11-09 15:34:10 +00:00
doc Spelling Improvements (#3642) 2021-05-13 14:07:14 -04:00
etc Update copyright year to 2021 (#3592) 2021-03-10 10:14:48 -05:00
keychain Update digest, hmac, ripemd160, sha2 and pbkdf2 crates (#3655) 2021-11-02 15:40:31 +00:00
p2p bump to 5.2.0-alpha.1 on master (#3652) 2021-08-19 09:06:52 +02:00
pool Rust 2021 Macro Warning Cleanup (#3658) 2021-11-02 15:10:01 +00:00
servers bump to 5.2.0-alpha.1 on master (#3652) 2021-08-19 09:06:52 +02:00
src Rust 2021 Macro Warning Cleanup (#3658) 2021-11-02 15:10:01 +00:00
store PMMR Backend Support for append_pruned_root (Continued) (#3659) 2021-11-09 15:34:10 +00:00
util bump to 5.2.0-alpha.1 on master (#3652) 2021-08-19 09:06:52 +02:00
.editorconfig [1.1.0] Merge master into 1.1.0 (#2720) 2019-04-01 11:47:48 +01:00
.gitignore ignore .vscode (#3333) 2020-05-24 23:34:33 +02:00
azure-pipelines.yml Update copyright year to 2021 (#3592) 2021-03-10 10:14:48 -05:00
Cargo.lock Update digest, hmac, ripemd160, sha2 and pbkdf2 crates (#3655) 2021-11-02 15:40:31 +00:00
Cargo.toml bump to 5.2.0-alpha.1 on master (#3652) 2021-08-19 09:06:52 +02:00
CODE_OF_CONDUCT.md Update Code of Conduct (#3447) 2020-09-22 17:15:37 +01:00
CONTRIBUTING.md Rename Floonet to Testnet (#3431) 2020-10-07 09:36:02 -04:00
LICENSE Create LICENSE 2017-06-29 09:24:44 -07:00
README.md credit where credit is due (#3356) 2020-06-16 18:41:09 +01:00
rustfmt.toml Update hyper/tokio/futures dependencies (#3214) 2020-02-18 23:45:27 +01:00
SECURITY.md fix: correct typo in SECURITY.md (#3462) 2020-10-08 09:46:48 -04:00

Build Status Coverage Status Chat Support Documentation Wiki Release Version License

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:

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.