Interesting! I wonder who did that and why.
If someone sold 40,000 Bitcoins on Mt. Gox right now, he would make $78,350, getting an average price of $1.96 per Bitcoin. I wonder how much the fella selling his 40,000 BTC got per Bitcoin...
Can anyone track down the block that contains the deposit related to this sell? I assume we would be able to see the deposit to a Mt. Gox account in the block chain. Of course we can't know if it was a gradual deposit or a single 40,000 BTC one, or when it happened.
Do any tools exist that can be used for working with the block chain locally? Can I, for example, somehow do a search in the block chain for a block containing at least, for example, 40,000 BTC worth of transaction within the last 7 days? That would be really interesting to be able to do.