Bitstamp kann nicht einfach mein Konto sperren Punkt und aus
Also gemäss ihren AGB dürfen sie genau das ;-)
You also agree that Bitstamp may, by giving notice, in its sole discretion terminate your access to the Site and to your Account, including without limitation, our right to: limit, suspend or terminate the service and Members' Accounts, prohibit access to the Site and its content, services and tools, delay or remove hosted content, and take technical and legal steps to keep Members off the Site if we think that they are creating problems or possible legal liabilities, infringing the intellectual property rights of third parties, or acting inconsistently with the letter or spirit of these Terms. Additionally, we may, in appropriate circumstances and at our discretion, suspend or terminate Accounts of Members for any reason, including without limitation....
https://www.bitstamp.net/terms-of-use/