Bitcoin Designed for Post-Quantum Era
bitcoin quantum
Bitcoin Quantum is Bitcoin designed for the post-quantum era. It keeps Bitcoin’s economic model and network architecture, while upgrading cryptography and transaction capacity to support large post-quantum signatures.
Key BTQ Features
Quantum Secure From Day One
Uses NIST-standardized post-quantum cryptography from genesis block onward.
Bitcoin Compatible
Familiar architecture, UTXO model, and wallet experience—easy to understand and adopt.
Canary Network
A live proving ground for quantum-safe technologies and real-world validation.
Future Ready
Built for cryptographic agility as standards evolve and new algorithms emerge.
A New Network
Separate genesis block and address formats prevent cross-chain replay attacks.
How It Works
Peer-to-Peer Network
Runs without banks or a central authority—users transact directly on the network.
Secured by the Network
Transactions and coin issuance are handled collectively through decentralized consensus.
Open and Permissionless
The protocol is public, nobody controls it, and anyone can participate.
Table of contents
The Quantum Threat
Bitcoin Relies on ECDSA Today
Bitcoin’s current signature system (ECDSA) is secure against classical computers, but it wasn’t built to withstand quantum attacks.
Quantum Computers Can Break It
Powerful quantum machines could use Shor’s algorithm to recover private keys from public keys, breaking the security model behind Bitcoin transactions.
Funds Could Become Vulnerable
If private keys are exposed, attackers could forge signatures and move assets without permission. The risk grows as quantum hardware continues to improve.
The Timeline Is Uncertain, But the Risk Isn’t
Nobody knows the exact date quantum computers will reach this level, but once they do, the impact could be immediate—so upgrading early matters.
Post-Quantum Architecture
Bitcoin Quantum combines NIST-standardized post-quantum cryptography with Bitcoin’s proven architecture to create a digital store of value that stays secure against both classical and quantum threats. It replaces Bitcoin’s ECDSA signatures with CRYSTALS-Dilithium, while keeping the familiar foundations like the UTXO model, Bitcoin scripting, and SHA-256 proof-of-work. The protocol is also designed to stay flexible over time, so it can adopt new post-quantum standards as cryptography continues to evolve.
Network Separation
Bitcoin Quantum runs as a separate network with its own genesis block, network identifiers, and address formats. This clean separation prevents cross-chain replay attacks and removes confusion between chains, so transactions can’t be accidentally or maliciously reused across networks.
Separate Genesis Block
Starts from a clean origin, independent from Bitcoin’s chain history.
Unique Network Identifiers
Clearly distinguishes Bitcoin Quantum from other networks at the protocol level.
New Address Formats
Makes it obvious which chain a transaction belongs to and reduces user error.
Replay Attack Protection
Prevents transactions from being reused across chains, keeping funds safe.
Learn More About BTQ
Interested in exploring Bitcoin Quantum and what quantum-safe Bitcoin could look like in practice?
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