Ninjastic
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Board Announcements (Altcoins)
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[ANN] QUBITCOIN (QTC) – Turning hashpower into quantum computing progress – Fair
by
superPlank
on 17/04/2025, 02:52:06 UTC
https://superquantum.io/qubitcoin

Highlights

  • QUBITCOIN (QTC) is a quantum-accelerated Proof-of-Work cryptocurrency,  powered by a novel consensus mechanism called Quantum Proof-of-Work (qPoW). Miners must solve quantum circuit simulations to compete for blocks, pushing the limits of quantum simulators and quantum computers while securing the chain
  • The Qubitcoin mainnet has been public and live in alpha since October 29th, 2024. (original blog post, original launch event)
  • Qubitcoin supports GPU-based quantum circuit mining via CUDA SDK. Its design aims to fuel both the crypto and quantum industries by merging incentives from blockchain with cutting-edge quantum simulation
  • Today, you need either a Linux machine or a WSL instance on Windows with an NVIDIA GPU (with compute capability 7.0 or greater) to run a node or a miner
  • GUI wallet is only available on Windows
  • All code is open source on cutables are available on https://superquantum.io/qubitcoin
  • Developed and supported by non-profit Superquantum with members from universities like MIT and Vanderbilt
  • Develop your own miner and quantum simulator software, or quantum computer, or use the stock version of the miner.


What QUBITCOIN brings to the table

Bitcoin demonstrated how strong incentives can create hardware breakthroughs, going from CPUs to ASICs in just a few years. Qubitcoin leverages this same competitive drive to upgrade quantum simulators. With qPoW, each miner must complete quantum tasks as part of the mining hash. The tasks simulate a 16-qubit circuit of parameterized rotation gates and CNOTs. Qubitcoin acts as a standardized benchmark for comparing simulators and future quantum hardware.


GPU Quantum Circuit Simulation with cuQuantum

Qubitcoin mining uses NVIDIA’s cuStateVec for GPU-accelerated circuit execution. Simulations rely on 128-bit complex floats and are precision-normalized to fixed-point for hash integration. Developers can plug in their own simulator backend via Bring Your Own Solver (BYOS). This flexibility opens the door to custom GPU kernels, CPU optimizations, or real quantum processors.

More: GitHub - Qubitcoin Node


Technical Summary

  • Built with Bitcoin Core as a starting point
  • Uses SHA256 and SHA3 hashing
  • 16-qubit quantum circuits, derived from hashed block data
  • Quantum circuit gates: Ry, Rz, CNOT (with parameter angles from hashed input)
  • Output transformed into 256-bit hash via expectation values
  • Verified in under 1ms on RTX 3060 Laptop GPU
  • Block time and difficulty dynamically adjusted via ASERT
  • Custom solvers supported (CPU, GPU, quantum hardware)



Useful Links


 

Mining Packages

  • Qubitcoin Full Node (with cuQuantum)
  • BYOS-Compatible: Create your own miner by modifying qhash_thread_init and run_simulation
  • Examples in Makefile.am show how to link alternative solvers



Roadmap Highlights

  • Optimized quantum simulator in development
  • Talks with quantum hardware companies and ASIC makers
  • Custom wallets



Papers & References