[ANN] QUBITCOIN (QTC) – Turning hashpower into quantum computing progress

[superPlank]

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

• Website: https://superquantum.io/qubitcoin
• Medium Article: https://superquantum.medium.com/boost-quantum-simulators-with-your-hashpower-c8142ad73894
• Discord: https://discord.gg/FTmV3GYd9a
• Telegram: https://t.me/qubitcoingroup
• GitHub: https://github.com/super-quantum/qubitcoin
• Email: qubitcoin@superquantum.io

 

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

• Shalaginov & Dubrovsky (2022): Quantum Proof of Work with Parameterized Circuits
• Cerezo et al. (2021): Variational Quantum Algorithms
• Jamadagni et al. (2024): Benchmarking Quantum Simulators

[reb0rn21]

there is zero peers to sync, chain is mined quite for long time

[superPlank]

there is zero peers to sync, chain is mined quite for long time

Apologies, I believe you may have used outdated binaries from the website. Superquantum has since updated them. Try again now.

[meirong]

2025-04-18T06:21:36Z Loading 0 mempool transactions from file...
2025-04-18T06:21:36Z Imported mempool transactions from file: 0 succeeded, 0 failed, 0 expired, 0 already there, 0 waiting for initial broadcast
2025-04-18T06:21:36Z initload thread exit
2025-04-18T06:22:37Z Adding fixed seeds as 60 seconds have passed and addrman is empty for at least one reachable network
2025-04-18T06:22:37Z Added 0 fixed seeds from reachable networks.
2025-04-18T06:23:47Z connect() to 73.47.180.210:42069 failed after wait: Connection refused (111)

I re-downloaded, but still can't sync node

[superPlank]

2025-04-18T06:21:36Z Loading 0 mempool transactions from file...
2025-04-18T06:21:36Z Imported mempool transactions from file: 0 succeeded, 0 failed, 0 expired, 0 already there, 0 waiting for initial broadcast
2025-04-18T06:21:36Z initload thread exit
2025-04-18T06:22:37Z Adding fixed seeds as 60 seconds have passed and addrman is empty for at least one reachable network
2025-04-18T06:22:37Z Added 0 fixed seeds from reachable networks.
2025-04-18T06:23:47Z connect() to 73.47.180.210:42069 failed after wait: Connection refused (111)

I re-downloaded, but still can't sync node

try to connect to this node: 54.158.147.24:42069

[z]

The authors thank Anton Kovalov, Michael Dubrovsky, and Bogdan Penkovsky for helpful discussions and feedback.

[alitzu]

thats moving now.

İ admit that im suprised.MIT guy who is founder of this project is followed by kaspa founder and btc foundation guy on X.

Also sir Vitalik write something about qPOW  at past.

Mikhail Shalaginov and his friends may write history.

https://x.com/MYShalaginov/status/1949499989052228024

i will ape if hit 30m cap.thats my terms for them.

[altgangster]

SCAMMMMMM, there is no such thing.

[captjack]

yes i think is some russian scammers involved

[ocminer]

I've added a pool for this one out of curiosity and fun:

https://qtc.suprnova.cc

give it a shot if you like, no fees

[Dijital Para]

I have studied this project and I do not think it is a scam for at least two reasons

1|>. They introduced an interesting update to POW by redirecting mining energy to solve quantum related simulation problems

2|>. They have reputable scientists in the team

[QuantumFalcon]

Greetings all,

It is great to see you guys taking interest in Qubitcoin.

Superdense Consensus details can be found here:

https://github.com/super-quantum/qubitcoin/tree/refs/heads/sdc-testing

Testnet scheduled for Q1 2026 I believe. I share your sentiments, very neat project and keen to see how SDC could possibly lead to new frontiers for PoW / qPoW.

Watching closely also.

[ocminer]

I've added a pool for this one out of curiosity and fun:

https://qtc.suprnova.cc

give it a shot if you like, no fees

25% bonus currently

[Hopsin1989]

THIS IS SCAM BE CAREFULL THEY ARE REPORTED ON REDDIT ALSO

THE ADMINS steal other coins on OTC and then ban all members who talk about it! Have all the proof from transaction details to screenshot with the admin involved. If you join the group and try to ask what's up with this accusation they ban you 100% SCAM

[Yannick0176]

THIS IS SCAM BE CAREFULL THEY ARE REPORTED ON REDDIT ALSO

THE ADMINS steal other coins on OTC and then ban all members who talk about it! Have all the proof from transaction details to screenshot with the admin involved. If you join the group and try to ask what's up with this accusation they ban you 100% SCAM

Confirmed scam. Blocked also just by asking what's this about

[captnCrunch]

This topic was openly discussed in one of the channels. All accounts which were banned were suspiciously appearing after 5 month of hibernation and clearly belonging to the same actor. Some of the accounts were related to a scam group which did some otc scams at the beginning of the project.