TLDR
- Bitcoin developers introduced a proposal to defend the network against future quantum computing threats.
- The plan may require users to move funds to new quantum-resistant wallet addresses.
- The proposal includes phased changes that could eventually freeze older wallet formats.
- Phase A would block sending funds to vulnerable addresses after a set period.
- Phase B would make legacy signatures invalid and prevent spending from old wallets.
Bitcoin developers have introduced a proposal to counter quantum computing risks that could threaten wallet security. The plan outlines forced migration to new address formats and possible freezing of legacy funds. The proposal has triggered debate within the community over control and security trade-offs.
Bitcoin Proposal Outlines Phased Migration and Restrictions
Developers submitted Bitcoin Improvement Proposal 361 to address risks from future quantum machines. The plan builds on earlier work that introduced a new transaction structure.
The proposal defines a staged transition to quantum-resistant address types across the network. It also introduces rules that gradually restrict older cryptographic methods.
Still dislike but looking forward to all the spirited debates. Inactive users are not acceptable collateral damage. And this reeks of central planning with the deadlines, behavior coercion, and forced migration. Will try and keep an open mind.
— MK (@zerosandohs) April 14, 2026
Phase A begins three years after activation, and blocks transfers to vulnerable address formats. However, users can still spend existing funds during this period.
Phase B activates five years after deployment and invalidates legacy signatures completely. As a result, wallets using older formats would lose spending ability.
Developers stated, “This is not an offensive attack; rather, it is defensive.” They argued the network must protect itself from potential threats.
Phase C remains under development and may allow recovery using zero-knowledge proofs. This method could verify ownership without exposing private keys.
Bitcoin Security Concerns Rise with Quantum Computing Risks
Bitcoin wallets rely on Elliptic Curve Digital Signature Algorithm for transaction verification and ownership proof. This system uses private and public keys to secure funds.
When users send transactions, the public key becomes visible on the blockchain permanently. Researchers warn that quantum machines could reverse engineer private keys.
A recent Google report estimated that quantum systems may need less power than expected. Some projections place a potential risk timeline around 2029.
Data indicates that about 6.7 million BTC currently sit in vulnerable address formats. These funds could face exposure if quantum attacks become viable.
Critics argue that the proposal introduces forced behavior within a decentralized system. One user stated, “Upgrade should be 100% voluntary.”
Another user said, “This reeks of central planning with deadlines and forced migration.” These responses highlight tension within the community.
Developers maintain that the proposal protects network integrity and user assets from malicious actors. They emphasized that inaction could expose the system to exploitation.
The proposal remains under review in Bitcoin’s official repository following its recent update. Further discussions continue as contributors assess implementation details.
