BTQ Deploys BIP 360 Testnet to Address Quantum Vulnerabilities
BTQ Technologies announced on March 19, 2026, the first functional deployment of Bitcoin Improvement Proposal (BIP) 360 on its Bitcoin Quantum testnet v0.3.0. This technical milestone introduces a quantum-resistant output type known as Pay-to-Merkle-Root (P2MR), which is designed to future-proof the network. The P2MR method mitigates the risk of quantum attacks by preventing the exposure of public keys on-chain, directly addressing a key vulnerability in Bitcoin's Taproot upgrade that could be exploited by Shor's algorithm.
By creating a separate testnet, BTQ is sidestepping the main Bitcoin network's slow governance process to build a "quantum canary network." This live environment, which has already attracted over 50 miners and surpassed 100,000 mined blocks, allows developers to test and refine quantum-resistant transaction models without waiting for consensus on the primary blockchain. The initiative operates as a fork of the protocol's code, not its ledger, starting from a new genesis block to test security solutions in practice.
Nearly 35% of Bitcoin Supply Remains at Risk
The push for quantum resistance is underscored by a recent report from ARK Invest, which estimates that 34.6% of the total Bitcoin supply is vulnerable to quantum attacks. This figure includes approximately 5 million BTC in addresses that have been reused, 1.7 million BTC in legacy Pay-to-Public-Key (P2PK) addresses, and 200,000 BTC in Pay-to-Taproot (P2TR) addresses. While the threat is considered a long-term risk rather than an immediate one, the report notes that the first successful attack on a public key could occur in the mid-2030s.
Advances from tech giants like IBM, which is targeting verified quantum advantage by the end of 2026, add a sense of urgency. The potential for a sufficiently powerful quantum computer to break Bitcoin's elliptic curve cryptography (ECC) poses a fundamental threat to the network's security. BIP 360 is a preventative measure, but experts note it is not a complete solution, as it only protects future transactions and does not include post-quantum digital signatures.
Social Consensus Emerges as Biggest Adoption Hurdle
Despite the technical progress, the greatest obstacle to making the main Bitcoin network quantum-resistant is social, not technological. Bitcoin's decentralized structure prioritizes stability and requires broad agreement from miners, developers, and users to implement major changes, a process that has historically slowed upgrades like SegWit and Taproot. Christopher Tam, president of BTQ Technologies, highlighted this challenge, stating that a solution requires convincing key, established figures within the community.
In a nutshell, it’s a social problem. There are certain high priests within Bitcoin that you need to convince. You have these social problems that seem extremely unlikely to be solved anytime soon, because it's not a technical problem, it's human behavior.
— Christopher Tam, President and Head of Innovation at BTQ Technologies.
This difficulty in achieving consensus is why BTQ opted for a separate testnet rather than attempting a direct hard or soft fork of Bitcoin. While this strategy accelerates technical development, it raises the question of whether users and miners would ever migrate to a new chain, a challenge that could prove even greater than upgrading the existing network.
Edgen Crypto·Mar 19 2026, 12:10
