qBitcoin
Explorer →

Protocol upgrade · Post-quantum · Proof-of-stake

Bitcoin,
Evolved.

qBitcoin is a protocol upgrade to Bitcoin: energy-intensive mining gives way to elegant proof-of-stake, and transactions are protected against the threat.

Read the Whitepaper → Convert BTC → qBTC
Consensus
Proof-of-Stake
Block time
10 s
Post-quantum signature
Falcon

Problem

Bitcoin solved distribution.
Now it needs to solve stewardship.

Over 94% of all Bitcoin is already in circulation. The mining era served its purpose. What comes next requires a different kind of security - one built on ownership, not electricity.

  • Energy Without Purpose

    Proof-of-Work was designed to distribute coins fairly. With distribution nearly complete, burning gigawatts to secure the ledger is architectural debt, not a feature.

  • The Quantum Clock Is Ticking

    ECDSA - the cryptography protecting every Bitcoin wallet - is mathematically broken by Shor’s algorithm running on a sufficiently powerful quantum computer. It’s not if, it’s when.

  • No Upgrade Path

    Legacy Bitcoin has no consensus mechanism to adopt post-quantum cryptography or move to proof-of-stake. The network needs a coordinated, non-destructive upgrade - and qBitcoin provides it.

Solution

Not a new coin.
An upgrade to the one you already trust.

qBitcoin carries Bitcoin’s UTXO model into a separate proof-of-stake blockchain with support for Falcon post-quantum signatures.

  • Same supply

    A limited number of coins.

  • New consensus

    Security comes from staked value × age - not from wasted computation.

  • Quantum-proof

    You can protect your coins with Falcon post-quantum signatures.

  • Two-way bridge

    Lock BTC → mint QBTC. Send QBTC back → receive BTC. No intermediaries.

Legacy Bitcoin Proof-of-Work 2009 - 2027
qBitcoin Proof-of-Stake 2026 →
  1. Extended capabilities Tokens · Smart contracts
  2. Cryptographic security Falcon · MAST
  3. Network consensus PoS · Reward Fund
  4. Protocol foundation ≈7.9M · UTXO

For everyone

Your Bitcoin,
working for you.

You don’t need to understand lattice cryptography to benefit from qBitcoin. Here’s what it means for your wallet.

  • Earn While You Hold

    Convert your BTC to QBTC, participate in network validation, and earn staking rewards - all while keeping full control of your funds. Convert back anytime.

    1% conversion fee

  • Algorithmic Growth

    The QBTC/BTC exchange rate rises algorithmically as more users migrate. Convert 1 BTC → 1 QBTC today, and convert back at 1.5× when adoption grows. No promises - pure math.

    algorithmic by design

  • Protection Against Future Threats

    QBTC uses Falcon, a post-quantum signature algorithm based on lattice cryptography. Choose a Falcon address to keep your funds safe even when quantum computers become a reality.

    Falcon · NTRU lattice

  • Fast & Cheap

    Forget 10-minute waits and unpredictable fees. qBitcoin confirms transactions in ~10 seconds, with deterministic fees and no gas games.

    60× faster than Bitcoin

For developers

The architecture Bitcoin should have had in 2024.

Six engineering decisions that make qBitcoin technically distinct - and why each one matters.

Wstake = Σ(vi × ai)

vi - UTXO value

ai - coin age

  • Stake weight = Σ(amount × age) per input. No lock-ups, no pools, no grinding. Proportional representation without centralisation pressure.

  • BTC locked on the legacy chain → QBTC minted on the PoS chain. Verification requires only the block headers + Merkle path - no full BTC node needed.

  • Token transactions are validated at the consensus layer using the same UTXO conservation rules as the base currency. No global state, no gas, no internal transactions.

  • Transaction fees flow into a shared Reward Fund; validators receive 1/500 per block. Eliminates MEV-style fee sniping and ensures every block is worth producing.

  • Signing two different blocks with the same coins in the same time slot incurs a 10% protocol penalty. The penalty goes to the Reward Fund.

  • Falcon-512 signatures on NTRU lattices target NIST security level 1 and are supported alongside ECDSA and Schnorr. Choose a Falcon address to protect your QBTC with post-quantum cryptography.

Bridge

BTC ↔ QBTC. Trustless. Both ways.

The bridge operates in a decentralised way, with cryptographic guarantees at the qBitcoin consensus level.

BTC → QBTC

  1. Lock

    Send BTC to a special locking address, specifying your qBitcoin destination. Your BTC are locked - not destroyed.

  2. Track

    qBitcoin nodes automatically detect your transaction in the bitcoin blockchain. No manual action is required.

  3. SPV proof

    A Simplified Payment Verification proof (block + Merkle path) is published on the qBTC chain and verified by consensus. Fully decentralised.

  4. Mint

    QBTC appear on your specified address. 1% fee goes to the Reward Fund - paid out to validators.

QBTC → BTC

  1. Lock QBTC

    Send QBTC to your bitcoin address - QBTC are locked on the qBTC chain.

  2. Release BTC

    BTC are automatically released and sent to your specified address.

  3. SPV proof

    An SPV proof of the bitcoin transaction is published on the qBTC chain - confirming completion.

  4. Burn

    Once the SPV proof is published, the locked QBTC are permanently burned.

Economics

Designed for permanence.
Not for fundraising.

qBitcoin has no ICO, no pre-mine, no founder allocation. Every QBTC in existence is a migrated BTC. The economics are simple, transparent, and self-sustaining.

  • Total supply

    ≈7.9M

  • BTC conversion limit

    10.5M BTC

  • Conversion fee

    1%

  • Fund per block

    1/500

  • Pre-mine

    0

  • Bridge open

    ≈2036

Transaction fees 1% conversion fee

Reward Fund

  1. 1/500 of fund - per-block subsidy

Roadmap

A protocol with a history - and a plan.

qBitcoin doesn’t start from zero. It inherits 15 years of Bitcoin’s proven track record and builds forward.

  1. 2009–2025

    Distribution

    • Bitcoin launches, 21M cap established
    • PoW distributes ~94% of final supply
    • The mathematical foundation is laid

  2. 2025-2026

    Evolution

    • qBitcoin node software developed
    • Falcon PQC integrated
    • Genesis Upgrade Block
    • Tier 2 smart contracts and L2 scaling

  3. 2026-2027

    Now

    Transition

    • Migration bridge is open
    • Users lock BTC and receive QBTC
    • Reward Fund grows from conversion fees

  4. 2027+

    Upcoming

    Stewardship

    • Validators sustained by Reward Fund + fees
    • Independent QBTC economy

The upgrade is open.
The math is public.
The decision is yours. →

Read the Whitepaper GitHub