Bitcoin researchers propose quantum fix that would not crowd out transactions

Researchers proposed a post‑quantum signature approach for Bitcoin that keeps the on‑chain footprint small so it would not crowd out ordinary transactions. Their design relies on cryptographic techniques to minimize signature size or aggregate post‑quantum data off‑chain, preserving block space and fee dynamics. The consensus view is that this approach could harden Bitcoin against future quantum attacks without large immediate increases in fees or transaction bloat. Adoption still requires careful security review and coordinated protocol changes.