BIP 360 Testnet Goes Live, 50 Miners Join Quantum-Resistant Bitcoin Test Mining

Canadian blockchain company BTQ Technologies announced that they have completed the first full deployment of Bitcoin Improvement Proposal BIP 360 in the Bitcoin Quantum Testnet v0.3.0. Currently, over 50 miners have joined, with more than 100,000 blocks mined using the testnet’s proprietary token BTQ, and an active open-source community has been established.

Why is BIP 360 Needed? The Potential Quantum Vulnerability of Taproot

To understand the necessity of BIP 360, we need to start with the 2021 Taproot upgrade. Taproot is the core foundation supporting major innovations such as the Lightning Network, BitVM, and Ark, and is widely regarded as the key underlying layer for Bitcoin’s next-generation applications. However, its key path spend mechanism has a potential vulnerability: it may expose user public keys on-chain.

In a hypothetical scenario with sufficiently powerful quantum computers, exposed public keys could be attacked using Shor’s algorithm, allowing attackers to reverse-engineer private keys from public keys, forge signatures, and steal funds.

BIP 360’s solution is to introduce a new output type called “Pay-to-Merkle-Root” (P2MR)—a hash tree structure that commits directly to the Merkle root of the script tree, no longer relying on internal keys or tweak operations. This preserves Taproot’s script functionality while cutting off the critical quantum-vulnerable path.

Technical Implementation of Testnet v0.3.0

BTQ’s deployment this time surpasses mere conceptual demonstration, providing real end-to-end verification capabilities.

Main technical features of Testnet v0.3.0

Address Format: Uses bc1z format (bech32m encoding) SegWit v2 outputs, enabling clear identification of address types.

Post-Quantum Signatures Integration: Enables all five Dilithium post-quantum signature opcodes within the P2MR tapscript environment.

NIST Standard Algorithms: Dilithium is a post-quantum digital signature algorithm standardized by the U.S. National Institute of Standards and Technology (NIST), ensuring the testnet has genuine quantum-resistant signature verification capabilities.

Complete Toolchain: Provides a full command-line interface (CLI) wallet tool and comprehensive RPC support, allowing users to create, fund, sign, broadcast, and confirm P2MR transactions throughout the entire process.

Realistic Assessment of Quantum Threat: The Difference Between 70 Million Bitcoins and Urgency

There is a significant debate within the industry regarding quantum threats. Galaxy Digital’s research head, Alex Thorn, points out that while quantum threats to Bitcoin do exist, they currently only affect certain exposed wallets and do not pose an immediate threat to the overall network security—“the most capable people are actively working to solve this problem.”

Security research organization Project Eleven estimates that about 70 million bitcoins are potentially exposed, mainly due to address reuse, legacy address formats, and some custodial practices. However, with the current publicly known quantum computing capabilities, these funds remain secure. As for the timeline for BIP 360’s implementation, Bitcoin’s community has traditionally been cautious about protocol changes. Taproot itself took years from proposal to activation, and upgrading for quantum resistance involving cryptographic migrations is even more complex, with governance challenges that should not be underestimated.

Frequently Asked Questions

Q: What specific problems does BIP 360 solve?
A: BIP 360 introduces the P2MR output type, replacing the mechanism in Taproot’s key path that could expose public keys with a hash tree commitment structure. In a future where powerful quantum computers are a reality, this change prevents attackers from reversing public keys on-chain using Shor’s algorithm, thereby eliminating the main quantum attack vector.

Q: Does the “potential risk” to 70 million bitcoins mean these funds are immediately in danger?
A: Not currently. According to Project Eleven’s research, these 70 million bitcoins are associated with public keys that are already exposed on-chain, but under current publicly known quantum computing capabilities, they remain secure. Alex Thorn also clearly states that the quantum threat does not pose an immediate danger to overall network security, and the crisis is not imminent.

Q: When might BIP 360 officially be integrated into the Bitcoin mainnet?
A: BIP 360 is still in the draft stage and has not yet entered the formal Bitcoin Improvement Proposal review process. For it to be adopted on the mainnet, it must pass core developer review and gain broad consensus among miners and node operators. Bitcoin’s governance process has historically been cautious; for example, Taproot took years from proposal to activation. The cryptographic migration involved in upgrading for quantum resistance is highly complex, making the specific timeline difficult to predict.