Gavin Andresen via bitcoin-dev <bitcoin-dev@lists.linuxfoundation.org> writes: > Should it be a requirement that ANY one-megabyte transaction that is valid > under the existing rules also be valid under new rules? > > Pro: There could be expensive-to-validate transactions created and given a > lockTime in the future stored somewhere safe. Their owners may have no > other way of spending the funds (they might have thrown away the private > keys), and changing validation rules to be more strict so that those > transactions are invalid would be an unacceptable confiscation of funds.
Not just lockTime; potentially any tx locked away in a safe. Consider low-S enforcement: high chance a non-expert user will be unable to spend an old transaction. They need to compromise their privacy and/or spend time and money. A milder "confiscation" but a more likely one. By that benchmark, we should aim for "reasonable certainty". A transaction which would never have been generated by any known software is the minimum bar. Adding "...which would have to be deliberately stupid with many redundant OP_CHECKSIG etc" surpasses it. The only extra safeguard I can think of is clear, widespread notification of the change. Cheers, Rusty. _______________________________________________ bitcoin-dev mailing list bitcoin-dev@lists.linuxfoundation.org https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
