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fix(psbt): skip unhardened paths when detecting the network - #199
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A Nunchuk taproot multisig carries its unspendable internal key at a bare /0/0, which sorted first and read as coin 0, so a testnet PSBT was detected as mainnet. Require a hardened purpose'/coin' prefix and check every derivation entry, not just the first.
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A Nunchuk taproot multisig carries its unspendable internal key at a bare /0/0, which sorted first and read as coin 0, so a testnet PSBT was detected as mainnet. Require a hardened purpose'/coin' prefix and check every derivation entry, not just the first.