librustzcash/zcash_history/README.md

# zcash_history

Special implementation of Merkle mountain ranges (MMR) for Zcash!

[![Build Status](https://travis-ci.org/NikVolf/zcash-mmr.svg?branch=master)](https://travis-ci.org/NikVolf/zcash-mmr)

The main design goals of this MMR implementation are

- Allow zero-cache and avoid db callbacks. As it is implemented, calling side must just smartly pre-load MMR nodes from the database (about log2(tree length) for append, twice as much for deletion).

- Reuse as much logic between rust and c++ clients and place it here and librustzcash.

- Close to zero memory consumption.

# License

`zcash_history` is distributed under the terms of both the MIT
license and the Apache License (Version 2.0), at your choice.

See LICENSE-APACHE, and LICENSE-MIT for details.

### Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted
for inclusion in `zcash_history` by you, as defined in the Apache-2.0 license, shall be
dual licensed as above, without any additional terms or conditions.
Rename zcash_mmr to zcash_history. This crate will contain all chain history logic. 2020-03-03 17:05:14 -08:00			`# zcash_history`
Add 'zcash_history/' from commit 'e2c131fdc308265adcab774e54d4d5804c23b368' git-subtree-dir: zcash_history git-subtree-mainline: be0ee9eb829f2b684f3506e5f1b9d212a8af917a git-subtree-split: e2c131fdc308265adcab774e54d4d5804c23b368 2020-03-03 16:51:19 -08:00
			`Special implementation of Merkle mountain ranges (MMR) for Zcash!`

			`[![Build Status](https://travis-ci.org/NikVolf/zcash-mmr.svg?branch=master)](https://travis-ci.org/NikVolf/zcash-mmr)`

			`The main design goals of this MMR implementation are`

			`- Allow zero-cache and avoid db callbacks. As it is implemented, calling side must just smartly pre-load MMR nodes from the database (about log2(tree length) for append, twice as much for deletion).`

			`- Reuse as much logic between rust and c++ clients and place it here and librustzcash.`

			`- Close to zero memory consumption.`

			`# License`

Rename zcash_mmr to zcash_history. This crate will contain all chain history logic. 2020-03-03 17:05:14 -08:00			`zcash_history` is distributed under the terms of both the MIT
Add 'zcash_history/' from commit 'e2c131fdc308265adcab774e54d4d5804c23b368' git-subtree-dir: zcash_history git-subtree-mainline: be0ee9eb829f2b684f3506e5f1b9d212a8af917a git-subtree-split: e2c131fdc308265adcab774e54d4d5804c23b368 2020-03-03 16:51:19 -08:00			`license and the Apache License (Version 2.0), at your choice.`

			`See LICENSE-APACHE, and LICENSE-MIT for details.`

			`### Contribution`

			`Unless you explicitly state otherwise, any contribution intentionally submitted`
Rename zcash_mmr to zcash_history. This crate will contain all chain history logic. 2020-03-03 17:05:14 -08:00			for inclusion in `zcash_history` by you, as defined in the Apache-2.0 license, shall be
Add 'zcash_history/' from commit 'e2c131fdc308265adcab774e54d4d5804c23b368' git-subtree-dir: zcash_history git-subtree-mainline: be0ee9eb829f2b684f3506e5f1b9d212a8af917a git-subtree-split: e2c131fdc308265adcab774e54d4d5804c23b368 2020-03-03 16:51:19 -08:00			`dual licensed as above, without any additional terms or conditions.`