I got contacted by the support at
http://cin.minar.cc/ They've modified the web page output so that the transaction ID doesn't appear truncated anymore.
I could then check the transaction status on coins-e thanks to the ID.
Strangely enough, the transaction (that hadn't showed up for more than 3 days) appeared in a matter of seconds once the status was checked against the actual transaction ID.
Botom line, though support was not dead fast to answer,
http://cin.minar.cc/ IS NOT a scam
