In the autumn of 2013 I downloaded a bitcoin wallet (Bitcoin QT v0.8.5-beta) to my laptop and buyed a half bitcoin. The wifi I then used was not fast, and I then gave up after some hours of downloading.
I opened the same wallet now, and I see I had downloaded about 1/15 of the blockchain (222 weeks behind). I read some place that the blockchain now is about 1 TB big, and I have only 724 GB free space on my harddisk on my laptop.
Today I had the downloading going for about 2 hours, but it is standing still at 222 weeks behind, and there is a message in my wallet that says: URGENT: Alert key compromised, upgrade required
So I now need advice for how I can fix this in the simplest possible way for a newbie like me
and hopefully not loose my money
.
I did not find a update link in my wallet, so have I then to go to the site of Bitcoin Core (formerly Bitcoin-Qt) and download their new wallet?, or are another wallet more suitable for me in this situation?
And what to do with the space-limit on my harddrive? I am willing to buy a big external harddrive, or should I buy a new and bigger computer?
Have I now lost the possibility to get my Bitcoin Cash, that was splitted from Bitcoin, because I did not catch in my Bitcoin before the splitting
?
