Can Bitcoin wallets goes down ?

[OmegaStarScream]

I want to know something important , I'am really struggling with this Bitcoin Core because each time I close it and re-open it , it tells me that the data has been corrupted on the database and I need to do the reindexing another time which sucks and it really takes a lot of time (UP to two days sometimes).

So my question is can Bitcoin wallets goes down ? I mean Armory & Electrum & Multibit mostly , I know they are open source but do they need server connection or something ? I mean if there servers goes down are we going to be able to them or our BTC will be lost forever ? (Unless we still can run them to export private keys , not sure how it works) same goes for Bitcoin Core it can go down or it can't ? just want to know if they rely on a server or something that can be hacked .

[Lauda]

I'm only familiar with Electrum and QT. Basically if all of their servers go down you just open the wallet and export the private keys.
It's pretty simple, however I still prefer using Bitcoin Core. You can never encounter such a situation with it. Anyhow, the chances that all Electrum servers will go down at once is very low.

[Muhammed Zakir]

Armory connect to local Bitcoin Core and it does not need any server to send/receive Bitcoin.

Electrum connects to servers created by others and it is very unlikely for all the servers to go down. However, if such a situation arises, you can use your seed to recover Bitcoin.

Obviously, Bitcoin survives because of full nodes and for that, currently, either Bitcoin Core or Bitcoin XT needs to be run. So it can't.

-snip-
(Unless we still can run them to export private keys , not sure how it works) {...}

Only Electrum need server but private keys are stored locally. So you don't need to worry!

I want to know something important , I'am really struggling with this Bitcoin Core because each time I close it and re-open it , it tells me that the data has been corrupted on the database and I need to do the reindexing another time which sucks and it really takes a lot of time (UP to two days sometimes).

Which OS and Bitcoin Core are you using?

[OmegaStarScream]

That's all I needed to know because Bitcoin Core eats shitload of CPU and I can't run multiple things on my PC while running and wanted to switch so just checking .
for what comes to your question Muhammed Zakir then I'am using Windows 8.1 Proffessional 64 bits & Bitcoin Core version v0.10.0 (64-bit) . Yes I didn't do the last update for my wallet since I'am waiting Windows 10 in three days and not sure if I'am going to stick with Bitcoin Core or go with Lightweight wallet . any advices are appreciated though.

But I don't think that the problem on my issue is having the 0.10.0 version since It was stable , nah ?

[Amph]

some times it do this at random, the issue would have to do with antivirus but it is not certain, for example i know that with malwarebyte and hitman pro it work great because i'm running those two with bitcoin core, try to run the last version just to see if it fix your issue

[OmegaStarScream]

some times it do this at random, the issue would have to do with antivirus but it is not certain, for example i know that with malwarebyte and hitman pro it work great because i'm running those two with bitcoin core, try to run the last version just to see if it fix your issue

I'am not sure what that Hitman pro is but I'am using Malwarebytes and it's not working great (If it have any relation with it of course )
I keep having all those issues with the Core which makes me think I may be infected and that's why I wanna wipe PC as soon as Windows 10 comes out , also as you see here , another problem i had : https://bitcointalk.org/index.php?topic=1129075.0

[g1974ak]

Every program (online or in your computer) van go down. The problem is if it will be restored after or not. If hardware in your computer it will be damaged physically your program it is gone forever. But you can backup its important data and so you will not lost anything or only a few things (the time passed from the last backup). While the online programs normally made backups every hour so nothing can be lost.

This is worth for the bitcoins wallet too. If they will go down they will be restored and nothing bad will happen.

[Muhammed Zakir]

That's all I needed to know because Bitcoin Core eats shitload of CPU and I can't run multiple things on my PC while running and wanted to switch so just checking .
for what comes to your question Muhammed Zakir then I'am using Windows 8.1 Proffessional 64 bits & Bitcoin Core version v0.10.0 (64-bit) . Yes I didn't do the last update for my wallet since I'am waiting Windows 10 in three days and not sure if I'am going to stick with Bitcoin Core or go with Lightweight wallet . any advices are appreciated though.

But I don't think that the problem on my issue is having the 0.10.0 version since It was stable , nah ?

http://bitcoin.stackexchange.com/a/12206 might be helpful to you.

I'am not sure what that Hitman pro is {...}

http://www.surfright.nl/en

[OmegaStarScream]

Gracias Muhammed once again but you just made me afraid more then ever.
If I have Hardware issues , does that mean that wallet.dat could get corrupted at one point and I won't be able to restore my Bitcoins ? or what wallet.dat is nothing completed just some strings that can be viewed with HEX or something ?

[Muhammed Zakir]

Gracias Muhammed once again but you just made me afraid more then ever.
If I have Hardware issues , does that mean that wallet.dat could get corrupted at one point and I won't be able to restore my Bitcoins ?

Yes, it can happen but as long as you make a backup if your wallet.dat or private keys, you are safe.

or what wallet.dat is nothing completed just some strings that can be viewed with HEX or something ?

http://bitcoin.stackexchange.com/a/3177

http://bitcoin.stackexchange.com/a/35580

[Possum577]

Don't forget that anything that runs in electricity can go down. That's a scary part about Bitcoin, it doesn't survive a societal breakdown where ppl are "off the grid". What happens to the block chain in that scenario?

It brings new meaning to "cold storage"!

[money.investment]

I want to know something important , I'am really struggling with this Bitcoin Core because each time I close it and re-open it , it tells me that the data has been corrupted on the database and I need to do the reindexing another time which sucks and it really takes a lot of time (UP to two days sometimes).

So my question is can Bitcoin wallets goes down ? I mean Armory & Electrum & Multibit mostly , I know they are open source but do they need server connection or something ? I mean if there servers goes down are we going to be able to them or our BTC will be lost forever ? (Unless we still can run them to export private keys , not sure how it works) same goes for Bitcoin Core it can go down or it can't ? just want to know if they rely on a server or something that can be hacked .

Lighter and decentralized alternative is using an SPV wallet. SPV wallet query directly to full nodes, and doesn't rely on any centralized server.

Currently the most prominent one is Multibit Wallet. Others options can be found on the wiki

[ChrisStewart5]

There are two types of wallets. SPV wallets do not verify the blockchain and depend on a decentralized service on top of bitcoin to verify. If that decentralized service on top of the blockchain goes down you cannot easily send your bitcoins from that wallet to another. You can mitigate this risk by creating nLockTime transactions. Full node wallets (i.e. Bitcoin core) run on the actual blockchain and cannot be taken down unless the entire bitcoin network goes down.

[Karpeles]

They can't go down, but they can fail to connect to the internet, or the data stored by them may get corrupted, if the there are hard drive issues or if you deleted some files or if you installed a corrupted version of the wallet.

Try to reinstall and check disk integrity, if you are sure the wallet can receive and send connections

[Velkro]

I mean Armory & Electrum & Multibit mostly

I would suggest using bitcoin core now... its fast, easy and without additional risks like when using multibit with hidden fees in each transaction with deanonymization for free, or electrum where server can know all your transactions.

[money.investment]

If that decentralized service on top of the blockchain goes down you

For the decentralized bitcoin network to go down, means entire bitcoin nodes are down. It cannot happen, as this would
require switching off or unplugging every full node from the internet.

[Rmcdermott927]

Don't forget that anything that runs in electricity can go down. That's a scary part about Bitcoin, it doesn't survive a societal breakdown where ppl are "off the grid". What happens to the block chain in that scenario?

It brings new meaning to "cold storage"!

I'm pretty sure that retrieving my private keys will be the least of my worries in such a scenario.   That's why having gold is good to have as a backup investment.

[Amph]

Don't forget that anything that runs in electricity can go down. That's a scary part about Bitcoin, it doesn't survive a societal breakdown where ppl are "off the grid". What happens to the block chain in that scenario?

It brings new meaning to "cold storage"!

back ups are made for a reason, you cna buy a powerful apc smart ups of 1500w and be safe for a very long time up to 1 hour, it depend how much you consume

so if every miners has many of those(a bit expensive but feasible) they cna in theory be online when a black out goes live

[OmegaStarScream]

I mean Armory & Electrum & Multibit mostly

I would suggest using bitcoin core now... its fast, easy and without additional risks like when using multibit with hidden fees in each transaction with deanonymization for free, or electrum where server can know all your transactions.

I'am really struggling to find out the solution here , for Bitcoin Core as I said I have issues with it and I'am afraid that my wallet.dat is corrupted or soomething and it eats a lot of CPU & RAM and can't handle that because myPC have only 3GB RAM and that's too low for Bitcoin Core . Multibit HD don't have hidden fees AFAIK , they tell you that they will send x satoshi's to the developpers of the application + the fees of the transaction for the miners or whoever takes those .
For what comes to Electrum , people just said it's decentralized so how it pass by a server

[money.investment]

For what comes to Electrum , people just said it's decentralized so how it pass by a server

Electrum client doen't directly interact with the bitcoin blockchain. Decentralized in the sense that
people are independently running electrum server.

Official Infographics of Electrum about its network



On the bottom of main page of their wiki, you can see, how to setup electrum server