  On February 2014, $650.000.000 worth of Bitcoins disappeared. Currently it is
unclear whether hackers or MtGox, the largest Bitcoin exchange, are to be
blamed. In either case, the anonymous and unregulated nature of the Bitcoin
system makes it practically impossible for innocent victims to get their money
back. We have investigated the technical possibilities, solutions and
implications of introducing a regulatory framework based on redlisting Bitcoin
accounts. Despite numerous proposals, the Bitcoin community has voiced a strong
opinion against any form of regulation. However, most of the discussions were
based on speculations rather than facts. We strive to contribute a scientific
foundation to these discussions and illuminate the path to crypto-justice.
