HashCash Core (HCASH)

HashCash Core is a full node and wallet implementation for the HashCash network.

Identity

• Client name: HashCash Core
• Version: 0.1.0
• User agent/subversion: /HashCash:0.1.0/
• Binaries:
  • hashcash
  • hashcashd
  • hashcash-cli
  • hashcash-qt
  • hashcash-tx
  • hashcash-util
  • hashcash-wallet
  • hashcash-chainstate
  • hashcash-node / hashcash-gui when IPC is enabled
• Default datadir: .hashcash
• Default config file: hashcash.conf

Network Defaults

• P2P port: 21126
• RPC port: 10309
• Bech32 HRP: hcash

Quick Start (Docker Regtest)

cd <repo-root>
docker build -t hashcash-node .
docker compose up -d
docker exec hashcash-node1 hashcash-cli -regtest getblockchaininfo

Local CI Flow (No Hosted CI Required)

cd <repo-root>
make ci-local

This runs a deterministic fail-fast flow:

• CMake configure/build
• Docker image build
• Two-node regtest startup
• idempotent wallet load/create
• bech32/address checks
• 101-block mine + sync checks
• runtime branding leak scan for user-facing Bitcoin|BTC|bitcoin-* output

Useful operational targets:

• make regtest-up
• make regtest-validate
• make regtest-down
• make regtest-reset

Local CMake Build

cmake -S . -B build -DBUILD_GUI=ON -DENABLE_IPC=OFF -DWITH_ZMQ=ON
cmake --build build -j$(nproc)

Expected binaries:

• build/bin/hashcash
• build/bin/hashcashd
• build/bin/hashcash-cli
• build/bin/hashcash-qt
• build/bin/hashcash-tx
• build/bin/hashcash-util
• build/bin/hashcash-wallet when wallet tool is enabled

Documentation

• Chain Parameters
• Docker Regtest Ops
• Changelog

Development Notes

• Contribution guidance: CONTRIBUTING.md
• Developer notes: doc/developer-notes.md
• Security policy: SECURITY.md

Testing

Unit tests and integration tests are available in:

• src/test/README.md
• test

License

Released under the MIT license. See COPYING.