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Also, its impossible for Hal to have created this message - Bitcoin signmessages did not exist at the time. Whether sold or not, the message was clearly signed by someone after Hal's passing (or at a point where he could no longer directly use a computer).
Matt's thread continues:
To clarify, or that *anyone* purchased (or otherwise acquired) Hal's keys. Not strictly Martin.

only proves someone with access to Hal Finney's private key (not Satoshi's) signed the claimed message. Also they misspelled his name.
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also what i don't understand is martin says that
The following signature
HM7vpPSUbNsfDHRX6gv8xxWcVNHEc/3pOk0YrVehaGoUdbWizznfzOdELkLd1EjSXsW1oE5vHAkNAPzrAVzhuoI=
decrypts to: -----BEGIN BITCOIN SIGNED MESSAGE-----
This Transaction was made by Paul Leroux to Hal Finney on January 12, 2009 #bitcoin
-----END BITCOIN SIGNED MESSAGE-----
but digital signatures do not "decrypt" to anything. what is the actually message that is signed by the signature ?
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This is the signed message. Shakreli is a noob.
This Transaction was made by Paul Leroux to Hal Finney on January 12, 2009 #bitcoin
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Disreputable source. Feel free to ignore.
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The content in the message is not proven by the signature, because the private key is Hal's not Satoshi's. But it does prove someone signed a message with Hal's private key.
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