QC is still many decades away from whatever thing QC company claims is around the corner.
Chill 😉
Discussion
But we need a plan right?
Yes. But no high priority for now.
If nothing else, introduce new QC resistant signature scheme, disable rbf for old scheme and allow for one-time conversion of old UTXO's to new scheme. I guess something like that would always work.
For now... Just never reuse a spent address.
Thanks :)