http://jltsbkrv6j5ebkiz5tgljnjs2v6fj33njoijwsuzmndh6242dsmwr5ad.onion/faq
If anything goes wrong in a transaction, if any problem arises from a customer, how can you help them, if you don't have a clue what the hell happened in your system 2 hours ago? We keep logs solely for keeping up the support system, and we only keep the logs while it's absolute necessary. We made a decision that this time period is 72 hours.
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