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If non segwit nodes view segwit transactions as anyone can spend ,why can't you broadcast a segwit transaction using them?

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Segwit was designed in such a way that segwit transactions, after removing the witness, are valid but non-standard to old nodes.

This guarantees that old nodes won't reject such transactions when they're seen in blocks, but still won't be relayed or mined by old software.

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  • Does this apply to all SegWit transactions, including P2SH-nested types?
    – Chris Chen
    Jan 29, 2019 at 16:21
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    @ChrisChen Indeed. All segwit spends violate the "clean stack" standardness rule implemented by most pre-segwit Bitcoin Core versions. Jan 29, 2019 at 19:04

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