[Bitcoin-segwit2x] Addressing Segwit's anyone-can-spend "issue" with the hard fork?

[Austin Maier]

On Jul 10, 2017 5:34 PM, "Christopher R. Halbersma via Bitcoin-segwit2x" <
bitcoin-segwit2x at lists.linuxfoundation.org> wrote:

I think the worry is not that someone will mine separate chain from
history to re-org the main chain, but instead that sometime in the
future it will become common place to discard the witness data for
transactions over x period of time old. If, for example, 90% of the
network discards witness data 7 years old. Unspent 7 year old
transactions could be spent by a malicious miner and only fork off 10%
of the network.


It makes no difference how old the witness data is that's pruned, it
doesn't suddenly mean that you no longer need to sign the transaction.
Trying to steal 7 year old coins would be just as invalid as trying to
steal 7 hour old coins. The only way it could go back to anyonecanspend is
with a reorg.
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