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RE: Secrets of Bitcoin’s Dystopian Valuation Model
and i have been very careful to keep them away from any segwit contamination...
If that's the case, anyone can taint your legacy coin simply by sending you a donation from a segwit address. See this one for example...
https://www.blockchain.com/btc/address/1andreas3batLhQa2FawWjeyjCqyBzypd
Seems Andreas Antonopoulos isn't worried about that taint or has been sending them off with coinjoin or mixers.
It's my understanding that he can simply spend those coins to another 1x legacy address to remove taint. I believe a 3x address spending back to a 1xx address requires a signature in the blockchain, so when segwit rules stop being enforced by miners, the received transaction is still valid even though it came from a segwit address. I remember reading from the Trilema logs but not entirely clear if this is true in practice.
That’s true as long as there will be no rollback to the tainted lineage. I have argued that rollback makes no sense from a game theoretic and economics analysis, thus rollback should not occur.