https://github.com/status-im/nim-ethash

Nim implementation of Ethash, Ethereum proof of work and Ethereum mining
https://github.com/status-im/nim-ethash

Last synced: 3 months ago
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Nim implementation of Ethash, Ethereum proof of work and Ethereum mining

• Host: GitHub
• URL: https://github.com/status-im/nim-ethash
• Owner: status-im
• License: apache-2.0
• Created: 2018-02-15T10:26:26.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2024-02-20T23:44:29.000Z (9 months ago)
• Last Synced: 2024-05-18T15:41:15.263Z (6 months ago)
• Language: Nim
• Homepage:
• Size: 168 KB
• Stars: 5
• Watchers: 26
• Forks: 1
• Open Issues: 6
• Metadata Files:
  • Readme: README.md
  • License: LICENSE-APACHEv2

Awesome Lists containing this project

• awesome-nim - ethash - A pure-Nim implementation of Ethash, the Ethereum proof of work. (Algorithms / Blockchain)

README

        
# ethash

[![License: Apache](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)

[![License: MIT](https://img.shields.io/badge/License-MIT-blue.svg)](https://opensource.org/licenses/MIT)

![Stability: experimental](https://img.shields.io/badge/stability-experimental-orange.svg)

![Github action](https://github.com/status-im/nim-ethash/workflows/CI/badge.svg)

# Introduction

A pure-Nim implementation of Ethash, the Ethereum proof of work

Implementation is based on the [spec revision 23 (2017-08-03)](https://github.com/ethereum/wiki/wiki/Ethash).

# Mining

An unoptimized mining CPU backend is available through the compile-time flag ``-d:ethash_mining``.

It requires compilation through the C++ backend.

# Optimizations

For maximum speed, compile Ethash with `-d:release -d:march_native -d:openmp`.

This will compile Ethash in Nim release mode, with all supported CPU extensions (especially AVX2) and with OpenMP multiprocessing. On MacOS, OpenMP requires installing GCC-7 and can be done through Homebrew.

# Original implementation

Original Ethereum implementation is available [here](https://github.com/ethereum/ethash).

**Warning ⚠ - License notice**: the original implementation is under GPLv3 or LGPLv3 and must not be used in this project.

## License

Licensed and distributed under either of

* MIT license: [LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT

or

* Apache License, Version 2.0, ([LICENSE-APACHEv2](LICENSE-APACHEv2) or http://www.apache.org/licenses/LICENSE-2.0)

at your option. This file may not be copied, modified, or distributed except according to those terms.