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Security of Multibit vs bitcoin.qt
I use the bitcoin qt client to send/receive bitcoin payments, but the last time I synced (yesterday), the block chain size has ballooned to 14 GB. I am thinking of using Multibit, but I hear that it is less secure because it does not encrypt your wallet. Is this true? Also, if I really want to use bitcoin qt, is there a way to reduce the application's hard drive footprint? Thanks in advance!
I had about $8 USD worth of bitcoin in a wallet, and I backed up the wallet.dat to my dropbox. According to the modified date of the file this was in April 2013, so it was probaby from bitcoin qt version 0.8.1, or maybe a little earlier. I basically left it there and haven't done anything with bitcoin since then. Since it is worth probably at least $100 now I decided to check the exact amount. I downloaded the latest version of bitcoin core, added the wallet.dat file to the data directory, started it with -rescan, and waited almost a month (!) for the blockchain data to get up to date. The balance showed as 0 the whole time. I thought it would update once the blockchain was totally downloaded, but it still just says 0. Is this a problem with old vs new versions? Did I do something wrong? Next time, should I expect the balance to show a non-zero amount even if I haven't downloaded the whole blockchain yet? Update: ok, I feel kind of dumb, turns out the transaction was made in a multibit wallet, not a bitcoin qt wallet, but I still have a copy of that too. I opened the wallet in the latest version of multibit classic, and it has the receiving address in question, and checking the address on blockchain.info I can see that it received the transaction... but the transaction and the balance both don't show in the program. I wonder if I need the same multibit version I had before? the transaction was made in feb 2014 Update 2: was able to use the private key to sweep the balance into electrum
Are we overlooking pgp verification of wallet installation files?
I am curious how many people use pgp to verify the new version of their favorite wallet software every time a new version comes out? To me it seems like pgp verification isn't taken very seriously. Most, but not all vendors will put out new pgp signature files with each new release however if you are relatively unaware of security this could mean you are unknowingly missing a very important step. Importing the authors pgp key, downloading the associated signature file and then verifying the executable isn't very obvious to those who aren't security savvy. However it is an obvious security hole and a potential honeypot for anyone looking for some easy coin. One thing I find disturbing is how few of the major wallet developers put any significant effort into educating their users on the first step of securing their hot wallet. Multibit and armory are the only two clients I know of that give any information on pgp verification, but even multibit misses this important step on their "How to install" page. Electrum doesn't even provide a signature file for their linux version instead providing a hyperlink with an md5 hash appended to it. Bitcoin-qt from what I can tell only provides sha256 hashes of their files with zero instruction on how to use them. To me it seems like the pgp step of securing a wallet is looked at as the boring minor tidbit that you have to have that nobody really wants to put time into resulting in most vendors throwing up some hashes/signatures with little to no information on how to use them. I think that all vendors should have a section with instructions on how to verify their software, put this as the second step in getting started with their software right after the download step and make sure to provide pgp signatures for each installer package and not just hashes. For me, not being a security expert, I feel much safer verifying a pgp signature vs checking that a hash matches. With bitcoins being targeted on a daily basis through incredibly creative means this seems to me like a giant gaping hole that could be fought with a very small amount of education. Just a thought. Edit: because I suck at the grammarEdit: after digging around I found the electrum signature files for linux. There is no direct link to the page from their website but they can be found here: http://download.electrum.org/
1. Install Bitcoin-Qt Since version 0.9, Bitcoin-Qt was renamed to Bitcoin Core t o reduce confusion between Bitcoin-the-network and Bitcoin-the-software. Bitcoin Core is a full Bitcoin client. It is a thick client, meaning it requires the full blockchain (explained below) on local disk to operate and expose blockchain back to the network to help relay and verify transactions. Wie funktioniert die Bitcoin Code App? Für alle Finanzmärkte gelten komplexe mathematische Strukturen. Für die Anleger bedeutet das, dass es unmöglich ist, sämtliche möglichen Wahrscheinlichkeitsrechnung in ihre Handelsentscheidungen einfließen zu lassen.Sie müssen sich also diverse Statistiken und Charts zu Hilfe nehmen, welche ihnen beispielsweise der eigene Broker zur Verfügung stellt. Desktop Wallets: MultiBit vs Bitcoin QT vs Electrum. For storing Bitcoin you need a wallet. A “wallet” is the Bitcoin equivalent of a bank account. It allows you to receive Bitcoin, store them, and then send them to others. The basic choice is whether you are going to self-host the wallet (i.e., install it on a computer or mobile device you own) or whether you are going to rely on someone ... I use the bitcoin qt client to send/receive bitcoin payments, but the last time I synced (yesterday), the block chain size has ballooned to 14 GB.... I also am having trouble getting the hashes to match on a Windows system (MultiBit, Bitcoin-Qt .zip and .exe). I am using Microsoft's "unsupported" tool that the "hash document" references. I suspect that I will have better results using Linux. In response to your specific issue, the "$" at the beginning of the command is the actual prompt. This implies the command is being entered in a linux ...
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