The privacy-first, self-hosted CAPTCHA for the modern web.
Internet History, Digital Cryptography, Cypherpunks, Money \ Economics... All the history is related to Bitcoin.
Pure PHP implementation of Hashcash 1.
Protect online forms from spam by making them perform Proof of Work (PoW).
Hashcash implementation in ES6 / Javascript
hashcash a Go library which implements the hashcash proof-of-work algorithm.
Hash based proof of work in Electrum protocol
Proof of work similar to Hashcash, based on BLAKE2b, written in JavaScript and WebAssembly
A toy implementation of a tcp server with its own simple text protocol with content protection from ddos attacks using proof of work.
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
ZeroTier-compatible cryptography library for Rust
A hashcash proof of work implementation for Dart and Flutter
Golang implementation of hashcash algorithm
Proof-of-work based challenge-response TCP server
A high-performance C++ implementation of the Cap.js solver.
mmg - Mini Mailer, a SOCKS5 smtp mailer for the Nym Mixnet or Tor Network.
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