As we know that in Bitcoin, now the signature used is ECDSA. The format of ECDSA is: $s=k−1(h(m)+rx)$. My question is: in Bitcoin, when we use ECDSA to sign, is the input m used in the ECDSA the bitcoin transaction? Namely, can we know all the information of transaction(input tx, output tx, amount, etc) from m?
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