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Pure PHP implementation of Hashcash 1.

Protect online forms from spam by making them perform Proof of Work (PoW).

Hashcash implementation in ES6 / Javascript

Hash based proof of work in Electrum protocol

HashCash proof-of-work implementation for Python 3.5+ and Java 8+.

hashcash a Go library which implements the hashcash proof-of-work algorithm.

Proof of work similar to Hashcash, based on BLAKE2b, written in JavaScript and WebAssembly

The application shows how to resist DDOS attacks using proof of work algorithm

Hashcash inspired Syscoin faucet

A toy implementation of a tcp server with its own simple text protocol with content protection from ddos attacks using proof of work.

A hashcash proof of work implementation for Dart and Flutter

This repository is proof of concept that implement proof of work system in PHP, javascript, and web assembly.

React Native C++ turbo module for the new architecture which implements SHA-256 based Hashcash algorithm against brute-force

Proof-of-work based challenge-response TCP server

Golang implementation of hashcash algorithm

Deterministically generate strong, random-looking password from any given string. Stateless password miner. Also see the link below for a better code.

Hashcash PoW JavaScript implementation. No dependencies.

las raices del bitcoin son profundas ya que reposa en hombros de gigantes

Crystal Lang implementation of Hashcash proof-of-work systems. Generates and verifies Hashcash strings.