I am gonna put this here, obviously nobody cares about such things as proofs.
‘It was tense and there was a bit of shouting.
(snip)
You didn't put a source for your text, which is:
https://www.lrb.co.uk/v38/n13/andrew-ohagan/the-satoshi-affairThe story also says this:
It was about 5.30 p.m. when he finally logged on to his laptop to do for Andresen what he had done for me in his office at home, sign a message with the key and have it verified. Andresen looked on. Wright had just used Satoshi’s key. At that point, it seemed to some of those in the room that Andresen’s body language had changed; he seemed slightly awed by the situation. He reached over to his bag and took out a brand-new USB stick and removed it from its wrapping. He took out his own laptop. ‘I need to test it on my computer,’ he said. He added that he was convinced, but that if people were going to ask him, he had to be able to say that he’d checked it independently. He pointed to Wright’s laptop and said it could all have been pre-loaded on there, though he knew that was unlikely. But he had to check on his own computer and then they would be done. He said the key could be used on his laptop and saved to the memory stick and that Wright could keep it. But for his own peace of mind, and for due diligence, so that there wasn’t a chance of fraud, he had to see it work on a computer that wasn’t Wright’s own.
Wright suddenly baulked. He had just signed a message to Andresen from Satoshi, he said, and had demonstrated his complete familiarity with their correspondence, but, in his mind, what Andresen was now asking for was of a different order. ‘I had vowed,’ Wright told me, ‘never to show the key publicly and never to let it go. I trusted Andresen, but I couldn’t do it.’ Wright got up from the table and started pacing. He had clearly believed he would be able to get through the proof session without this. In fact, he had said in my presence several times over the preceding months that he would never hand the key over to anyone or allow it to be copied or used on someone else’s machine. ‘I do not want to categorically prove keys across machines,’ he wrote to me in an email. To him, this would be to give Satoshi away and perhaps to dilute his own proclaimed connection to him. He went to a chair in the corner of the room and looked up at Andresen. ‘Maybe you and I could get to know each other better,’ he said.
Andresen just nodded his assent. ‘Like, trade more emails,’ Wright said, ‘and I can sign more messages to you.’
At this point, Matthews’s blood ran cold. ‘It was the only time during all the years that I thought: “Jesus Christ, has he been spinning us the whole time?”’ MacGregor too felt this was a very risky moment. He glanced at Matthews. There was no way he was going to let Andresen get back on the plane with that as a punctuation mark. They all felt Wright’s behaviour was ludicrous: he’d demonstrated that he was Satoshi and only had to let this be verified on Gavin’s laptop. End of story.
Wright's supposed signing of messages for the BBC and Andrew O'Hagan were
refuted by several other cryptography and blockchain experts, including Pieter Wuille, Christopher Jeffrey and Greg Maxwell.
After the show aired, veteran cryptographers quickly pointed out that the BBC reporters and Andrew O’Hagan were seemingly duped. The long-winded London Review of Books story that describes O’Hagan’s experience hanging out with Wright for months shows O’Hagan had no clue what Wright was actually signing. Moreover, well-known cryptocurrency developers like Pieter Wuille, Christopher Jeffrey and Greg Maxwell showed the public how Wright pulled off his signing parlor trick.
In addition to all of this, Vitalik Buterin
put it most perfectly when speaking at a conference with Gavin Andresen. Basically, Buterin posed the question of why would Wright choose to go the route of proving he could sign a message in front of only a small, select audience when he could just as easily do so in front of the entire world? The fact that he chose the more roundabout way of "proving" something suggests its because he couldn't do it the good way.