I see. Are you implying whoever has access to Hal's wallet could have produced this signature after his death?

exactly. this has nothing to do with proving it is Santoshi, nor is it a hash collision.

All it means is multiple people have Hal's private key and somehow either Martin is one of them, or he was told to post this message.

That's correct.

Wouldn’t it be likely that his wife or a close friend has the private key?

> It appears that someone else (definitely not Hal) has the private key to that address.

So Paul le Roux, by the message?

> 1Q2TWHE3GMdB6BZKafqwxXtWAWgFt5Jvm3 is Hal Finney's (Not Satoshi's) address.

Where do you get this?

EDIT: I am proposing not that Paul LeRoux is Satoshi, but that he is in possession of Hal's key, and produced that signature as a troll.

No, that particular message could be created by anyone (including people who are not Paul le Roux), who has the key to the 1Q2 address, at any time, past or present.

All we have to go on right now is that someone knows the private key that corresponds to the 1Q2 address and used it sometime before the last hour to generate a hash of a message that says that Paul le Roux sent bitcoin to Hal Finney.

How do we know the message was signed during the last hour and not in 2017 or 2014 or whatever? Does it include the hash of a Bitcoin block created in the last hour?

Your parent didn't write "during the last hour", they wrote "before the last hour"

I would believe it if the signature came from one of Satoshi's addresses, but this is not it.

Maybe the key was inherited by someone? I don't intend to take my cryptos with me to the grave, or redistribute my wealth between holders, however you prefer to see it.