I am not sure why everybody likes to talk about "proof". The law deals with evidence, not proofs. Law is not maths.
Bitstamp needs to respond because any delay in responding may open them to legal liability. If they are investigating the matter then sure, but say so, if the account is to be locked or not locked affects the decision/s that a creditor may make.
Any delay therefore by a creditor in applying for an injunction can lead to legal liability. If they wish to take that risk, together with the PR risk, then that's their legal and business decision.
Bitstamp needs to run an honest exchange.
It is not their job to be the "Bitcoin Police."
To avoid "legal liability", they treat all customer deposits the same.
It's not their job to be the "Bitcoin Police" but an allegation of money laundering involving funds from a high profile heist/lawsuit demands a response. Bitstamp is in control of those coins now; Bitstamp has an obligation to operate within the law.
The entire USD balance owned by Bitstamp is at risk based on their actions and how they treat money laundering allegations. Gox should be a lesson; their bank accounts were seized because they ignored AML laws dealing with the Silk Road.
Bitstamp has an obligation to its users. They need to ensure that the proper steps are being taken to avert the legal risk.
Once the allegation is made the water gets muddy. Bitstamp can't just ignore the allegation if it wishes to remain compliant with AML laws...
1) What if the real crooks used a mixer and you are looking at the wrong coins? (I haven't read the whole thread, has this been answered?)
2) Much of what passes for "AML laws" is complete BS and those laws need to be changed.
3a) "Self-regulation" of our community is not the same as running to the Gov, just because some people got badly burned.
3b) In a free market Bitstamp can run their business the way they see fit (people who are satisfied will tend to remain customers)
3c)
You have no right to tell Bitstamp what to do. Ideologically I agree with you.
1) Bitstamp needs to verify the source of the coins; they need to place a hold on the account and audit the account. If the account doesn't belong to a party implicated in the legal proceedings then they can release the hold. Really, they need to focus on the account holder more than the coins... (This isn't about the stolen coins, this is about protecting the USD bank accounts containing Bitstamp exchange users' funds). Gox lost the USD bank accounts because of AML violations; Bitstamp needs to protect its users.
2) I agree, the AML law should be ripped out of the book, crumbled into a ball, then dropped into a crucible of molten iron... But it's the law right now and Bitstamp has an obligation to follow the law. If Bitstamp doesn't follow the law, the account holders will stand at risk of losing their money along with the money belonging to Bitstamp...
3a) The government is already involved, I agree about not running to the government in most cases. This time, the government is already a party of an investigation. Withholding information would be unwise.
3b) This isn't a free market. If it was you would be correct...
3c) I didn't write the law. Every Bitstamp user is exposed to counter party risk, Bitstamp has an obligation to its users to mitigate that risk by following the law and acting reasonably. Every user has a right to insist...