QryptCoin Core

This project has been sunset as of March 14, 2026.

QryptCoin is no longer under active development. The network is no longer maintained, and no further releases, patches, or support will be provided. This repository is archived and preserved in read-only mode for reference purposes only.

Thank you to everyone who showed interest in the project.

— Mikhael, QryptCoin Technologies LLC

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QryptCoin Core was the reference implementation of the QryptCoin protocol, maintained by QryptCoin Technologies LLC.

QryptCoin was a peer-to-peer electronic cash system that enabled direct value transfer without reliance on centralized intermediaries. The system used a proof-of-work blockchain to establish a globally ordered ledger of transactions, with ownership represented by unspent transaction outputs (UTXOs).

This repository contains the full node software that was required to participate in the QryptCoin network by validating blocks, relaying transactions, and enforcing consensus rules.

Overview

The QryptCoin protocol combined a conservative proof-of-work consensus mechanism with post-quantum digital signatures to provide long-term cryptographic durability.

Key properties:

• Decentralized block production via proof-of-work
• Deterministic transaction validation rules
• Post-quantum transaction authorization
• Explicit witness commitment for malleability resistance
• Fixed and auditable consensus limits

This implementation enforced the consensus rules described in the protocol documentation and the published whitepaper.

Network Resources (Offline)

The following services are no longer operational:

• ~~Block Explorer: explorer.qryptcoin.org~~
• ~~Mempool Explorer: mempool.qryptcoin.org~~
• ~~Website: qryptcoin.org~~
• ~~Telegram: Community~~

Repository contents

This repository includes:

• Core node implementation (qryptd)
• Command-line client (qrypt-cli)
• Payment Code resolver proxy (qrypt-payresolver)
• Consensus and validation logic
• Peer-to-peer networking stack (encrypted transport and message framing)
• Wallet key management and signing logic (node tooling)
• Cryptographic primitives and utilities used by the protocol
• Build system and test framework
• Protocol and build documentation

This repository does not include:

• Block explorers
• Web interfaces or wallet GUIs
• Deployment or hosting configuration
• Monitoring or operational tooling
• Private infrastructure artifacts or environment-specific data

Documentation

• Whitepaper: docs/whitepaper.pdf
• Protocol rules (implementation-grounded): docs/protocol.md
• Payment Codes (reusable identifiers): docs/payment_codes.md
• Build and run instructions: docs/build.md
• Testing: docs/testing.md
• Developer guide: docs/dev.md
• Verifying downloads: docs/verify.md
• Release process (maintainers): docs/release.md
• Audit checklist: docs/audit-checklist.md

Building

Build instructions are provided in docs/build.md.

Typical build steps (Linux/macOS):

git clone https://github.com/QryptCoin-Technologies-L-L-C/Qryptcoin.git
cd Qryptcoin
cmake -S . -B build -DCMAKE_BUILD_TYPE=Release
cmake --build build --parallel

Windows (MSVC):

git clone https://github.com/QryptCoin-Technologies-L-L-C/Qryptcoin.git
cd Qryptcoin
cmake -S . -B build -A x64
cmake --build build --config Release --parallel

Running a node

By default, qryptd bootstraps peer discovery using the network's built-in DNS seeds (and optional static seed hosts).

Start a mainnet node:

./build/qryptd --network mainnet

For controlled environments, override bootstrapping by providing one or more peers explicitly:

./build/qryptd --network mainnet --connect-peer <host:port>

Additional peer bootstrapping options are described in docs/build.md.

Tests

ctest --test-dir build --output-on-failure

License

Source code is licensed under the MIT license: LICENSE.