Key Highlights
- Bitcoin Quantum testnet v0.3.0 delivers the first functional implementation of BIP-360, the quantum-resistant output type merged into Bitcoin’s official BIP repository in February 2026.
- The release addresses Taproot’s quantum vulnerability by eliminating the key-path spend mechanism.
- The testnet has reached meaningful scale, with more than 50 miners and over 100,000 blocks mined.
BTQ Technologies (Nasdaq: BTQ), a quantum technology company, announced that its Bitcoin Quantum testnet v0.3.0 includes the first working implementation of Bitcoin Improvement Proposal (BIP) 360, the quantum-resistant Pay-to-Merkle-Root output type.
BIP-360 was proposed in September 2024 and merged into Bitcoin’s official Bitcoin Improvement Proposal repository earlier this year. But while the proposal has entered Bitcoin’s formal review process, no implementation work has begun within Bitcoin Core itself. BTQ has moved ahead independently, building and activating the full upgrade on its testnet.
“BIP 360 represents the Bitcoin community’s most significant step toward quantum resistance and we’ve turned it from a proposal into running code,” said Olivier Roussy Newton, CEO and Chairman of BTQ Technologies. “Bitcoin Quantum exists to prove that quantum-safe solutions work in practice, not just on paper.”
Bitcoin’s future
The BIP 360 proposal addresses a specific vulnerability introduced by Taproot, the upgrade activated on Bitcoin in 2021 that underpins much of the network’s scaling and programmability roadmap.
Taproot is foundational infrastructure. It powers advanced functionality used by Lightning Network, BitVM, and Ark—technologies widely regarded as critical to Bitcoin’s evolution. However, Taproot’s design includes a key-path spend mechanism that exposes public keys on-chain. In a future where sufficiently powerful quantum computers exist, those exposed public keys could be vulnerable to attack via Shor’s algorithm.
BIP-360 addresses this by introducing Pay-to-Merkle-Root (P2MR), a new output type that commits directly to the script tree’s Merkle root without relying on an internal key or tweak. This preserves Taproot’s scripting capabilities while eliminating the key-path spend that creates quantum exposure.
In practical terms, it offers a path to keeping everything Taproot enables while removing one of Bitcoin’s most significant long-term cryptographic risks.
Testnet v0.3.0
BTQ’s v0.3.0 release includes full P2MR consensus with SegWit version 2 outputs using bc1z address encoding (bech32m), Merkle root commitment verification, and control block validation. All five Dilithium post-quantum signature opcodes are enabled in the P2MR tapscript context, providing real quantum-resistant signature verification inside the script tree.
The release also ships end-to-end CLI wallet tooling—complete wallet RPC support that enables users to create, fund, sign, and spend P2MR transactions on testnet today. The full validation pipeline covers address creation, funding, transaction construction, signing, mempool acceptance, broadcast, and confirmation.
Beyond BIP-360, the v0.3.0 update includes optimized block cadence with one-minute target block spacing for faster iteration, a refined emission schedule maintaining Bitcoin-like monetary behavior, Dilithium signature hardening through improved sigop counting and tapscript security fixes, and restored SegWit discount—particularly important because post-quantum signatures are substantially larger than traditional Bitcoin signatures.
A live network, not a whitepaper
Bitcoin Quantum has moved beyond early-stage testing. The network now counts more than 50 active miners, over 100,000 blocks mined across four testnet iterations, and an open-source contributor community of more than 100 cryptographers, developers, and miners working to validate and improve the protocol.
This traction is significant because Bitcoin’s own governance culture has historically made major protocol upgrades painfully slow. SegWit took approximately 8.5 years from conception to widespread adoption. Taproot took approximately 7.5 years.
BTQ’s approach bypasses that timeline constraint by providing a separate, fully functional environment where the industry can test quantum-resistant transactions without waiting for Bitcoin Core consensus.
The regulatory clock is ticking
The v0.3.0 release arrives at a moment of accelerating urgency.
U.S. federal agencies face an April 2026 deadline to submit post-quantum cryptography transition plans under National Security Memorandum 10 (NSM-10). The European Union has set a 2030 target for critical infrastructure quantum resistance. Canada’s new federal procurement requirements aligned with post-quantum cryptography also take effect in April 2026.
Meanwhile, institutional investors are increasingly treating quantum risk as material. BlackRock flagged quantum computing threats to Bitcoin in its ETF filings last year. Coinbase analyst David Duong warned that approximately 6.51 million BTC — about 32.7% of circulating supply — sit in addresses with exposed public keys that would be vulnerable to quantum attack. Delphi Digital characterized Bitcoin Quantum as a “quantum canary” network and suggested BTQ may become “the ultimate quantum insurance policy.”
The scale of the threat
The numbers frame the urgency. Multiple analyses estimate that between 4.49 million and 6.65 million BTC—valued between $650 billion and $750 billion—remain in addresses where public keys are already exposed on-chain. This includes Satoshi-era coins (an estimated 600,000 to 1.1 million BTC), early miner rewards, and Bitcoin held in reused modern addresses.
The threat is not immediate—no quantum computer today can break Bitcoin’s cryptography. But the migration window is narrowing. Cryptographic transitions at the scale of a global, decentralized network take years, and the Bitcoin community has not yet begun one. BTQ’s testnet provides the first live environment where that transition can be rehearsed.
BTQ’s commercialization strategy
BTQ plans to capture value across the quantum transition through multiple pathways. The company expects to operate a Bitcoin Quantum mining pool with a 3% fee on block rewards, projecting accumulation of approximately 100,000 BTQ tokens in the first twelve months of network operation. These holdings will be retained on the corporate balance sheet as a strategic treasury asset.
Beyond mining, BTQ envisions longer-term revenue streams spanning security-as-a-service models, premium settlement infrastructure, and quantum certification services—targeting a market where tokenized assets are projected to exceed $16 trillion by 2030.
The company operates a dual strategy: centralized Quantum Secure Systems and Networks (QSSN) products for regulated institutions and decentralized products like Bitcoin Quantum for the open blockchain ecosystem.
“The industry can’t afford to treat quantum resistance as a theoretical exercise,” concluded Roussy Newton. “BIP 360 was a landmark proposal and we’ve turned it into a landmark implementation.”
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