Bitcoin Developer Proposes Hard Fork to Protect BTC From Quantum Computing Threats

Bitcoin could be headed for its most sweeping cryptographic overhaul yet if a new proposal gains traction.
A draft Bitcoin Improvement Proposal (BIP) titled Quantum-Resistant Address Migration Protocol (QRAMP) has been introduced by developer Agustin Cruz. It outlines a plan to enforce a network-wide migration of BTC from legacy wallets to ones secured by post-quantum cryptography.
Quantum computing involves moving away from a process reliant on binary code, ones and zeros, and exponentially increasing computing power by employing Quantum bits (qubits) that exist in multiple states simultaneously. Such a jump in power is expected to threaten modern computing encryption built by classic machines.
The proposal suggests that after a predetermined block height, nodes running the updated software would reject any transaction trying to spend coins from an address using ECDSA cryptography, which could theoretically make it vulnerable to quantum attacks.
A hard fork debate
Bitcoin currently relies on algorithms, including SHA-256 for mining and the Elliptic Curve Digital Signature Algorithm (ECDSA) for signatures. Per Cruz, legacy addresses that haven’t yet transacted are protected by additional layers, while those that have exposed their public keys—necessary to conduct transactions—may now be vulnerable “if sufficiently powerful quantum computers emerge.”
The move would require a hard fork, which is likely going to be a tall ask from the community. A hard fork refers to a change to a blockchain that renders an older version incompatible.
"I admire the effort but this will still leave everyone who doesn't migrate's coins vunerable, including Satoshi's coins," said one Reddit user about the new proposal.
"Bitcoin could implement a post quantum security for all coins but that would need a hard fork, which due to bitcoin's history and the mantra repeated by maxis that would create a new coin and would not be bitcoin anymore."