The process of bringing a Bitcoin client up to date with the blocks it is missing from the block chain.

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1answer
90 views

Can you switch the method of blockchain download?

I torrented bootstrap.dat and used am using it to populate the blockchain. It is close to being complete, but my server has ran out of room. There is room for one copy but not enough for two. Is it ...
0
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0answers
25 views

BIP32 wallet sync with Bloom filters

I'm working on my SPV library and I still have a hard time figuring how to approach the BIP32 + Bloom filters combination. Here's how I currently sync an existing HD wallet (after fast catch-up): ...
0
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0answers
81 views

How to set syncnode of a peer to true?

I have a testnet connection with 3 clients. When I am doing getpeerinfo on 1 I am getting [ { "addr" : "172.20.61.111:63379", "services" : "00000001", "lastsend" : 1403246741, ...
2
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1answer
175 views

Wallet takes way too much time to keep up to date?

I would like to start using bitcoin more for day-to-day transactions. However, it takes way too long to keep my wallet up to date to be practical. I am using Bitcoin Armory, though I have had this ...
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1answer
81 views

Using blockchain to publish downloadable software verification codes

What is the point of comparing sha256 of downloaded file with published on the same website code? Why can't developers of currencies publish file version and sha256 hash on blockchain as alias or ...
4
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1answer
56 views

What is the point of comparing sha256 of downloaded file with published on the same website code? [closed]

Some websites publish sha256 to check authenticity of downloaded file. I suppose this is to protect against man-in-the-middle attack - that my file was not altered during download. What prevents ...
0
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2answers
195 views

Is there any altcoin with improvements in blockchain download time?

Let me introduce my idea. Given: sizeof( Blockchain ) = 16Gb Downloading of one avi film 16GB from the pirate bay ( 5mb/s ) = 2-3 hours Downloading of bitcoin's blockchain ( 5mb/s ) = 2-3 days One ...
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2answers
517 views

bitcoind in testnet is not synchronizing

I installed bitcoind into Linux. I'm running it in testnet mode but it is not synchronizing as it is not downloading blocks. I have the following in bitcoin.conf: rpcport=8332 # Needed for testnet ...
2
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0answers
217 views

digitalcoin wallet won't sync

I've had my digitalcoin wallet open for a few days now, hoping it would eventually sync back up but it's seemingly stuck, not necessarily at a specific block, but around 3 days back, whichever block ...
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0answers
60 views

Installed Bitcoin-QT on windows2008r2 server, but it won't snyc anything at all

Installed Bitcoin-QT on windows2008r2 server, but it won't sync anything at all. No connections to network, no blocks, no movement full stop. I have OK'd it in windows firewall, tried connecting ...
2
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3answers
311 views

Are there any cryptocurrencies with no mining beyond participation?

I mean something where just participation in the decentralized network gives you coins somehow and you cannot do anything beyond (excluding more participation, of course, by having multiple PCs and ...
0
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1answer
40 views

how to get clients sync status via API

I try to use the build in API by bitcoin client and I wonder how to get the sync status via API of a runing client.
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0answers
234 views

Cannot synchronize with Bitcoin in testnet mode

I downloaded Bitcoin-QT for Windows 7 into: MYUSERNAME/Downloads/bitcoin-0.8.6-win32/bitcoin-0.8.6-win32 I want to run Bitcoin in testnet mode, so I created bitcoin.conf with only the following ...
1
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1answer
302 views

Armory takes 8 Hours to sync. Is it going to get worse as Bitcoin becomes more popular? [duplicate]

I have been experimenting with Bitcoin and I installed Armory wallet. It told me that it would take approximately 8 hours to sync the worldwide ledger. My question is, as Bitcoin gets more popular, ...
2
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1answer
64 views

Download only first few blocks of blockchain

Is there an archive location or a place where I could be able to download only the first few hundred blocks of the block chain?
2
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1answer
212 views

mapOrphan overflow, removed 1 tx

I'm trying to download the block chain and synchronize with the network (using Bitcoin-qt 0.8.6). I have a 2 year old wallet.dat file with a fractions worth of unconfirmed bitcoins. After over a day ...
3
votes
2answers
11k views

Faster way to sync my new Bitcoin wallet?

I'm very new to Bitcoin so I apologize if this question is naive. I just downloaded the Bitcoin, Litecoin, and Dogecoin Qt clients and opened each of these apps. Consistent with their coin's ...
1
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3answers
1k views

Why is Bitcoin-qt using my CPU at 100%?

I am running Windows 7, and every time I open Bitcoin-Qt (v0.8.6-beta) during synchronization my CPU runs at around 95% according to the Windows Task Manager. As soon as synchronization is finished, ...
0
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1answer
6k views

Wallet Out of Sync and Bitcoin transfer

I bought bitcoins and sent them to the wallet, however the wallet is not synchronized and as a result I cannot see my bitcoins. Will I be able to see them as soon as the synch process finishes or have ...
2
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1answer
295 views

Miner seems to be stuck at receiving new blocks

I have two laptops cranking hashes for pooled mining. My Mac is set up correctly, and I see the (yay!!!) messages pretty often from the minerd.exe output. However, the PC I have cranking never seems ...
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4answers
127 views

Is there a way to monitor what bitcoin-qt is doing on a mac os x?

Using 0.6.6.2 on a mac mini; has been running for 56 hours now, still not fully synchronised; is there a way to monitor whether the program is actually doing something or just stuck? would the 0.8.x ...
0
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0answers
28 views

download the entire blockchain? [duplicate]

Im new to this so say sorry now... I downloaded and used bitcoin wallet, gave the address to someone and I have received a small payment, however do I need to download the entire blockchain to see my ...
1
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1answer
2k views

Need help! Initial sync not progressing, BTC sent already, + warning message

Please help! I look forward to your intelligent caring responses. Here is the situation: I'm trying to do the initial synchronizing of Bitcoin-QT, which hasn't progressed in 14 hours, and: - ...
2
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1answer
378 views

Bitcoin-QT client shows coins, but cannot find wallet.dat

It's been a couple years, and I opened my bitcoin-qt client. It says I have coins, but is taking days to "sync with network". Further, I cannot find a wallet.dat file anywhere on my system. How ...
0
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4answers
590 views

Bitcoin qt synchronization problems!

So bought my first Bitcoins the other day (27 & 28/11/13) on localcoins, then transferred them to a MultiBit wallet. No problems. I decided to use a 'safer' wallet, therefore I moved the coins to ...
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2answers
326 views

Bitcoin too large file

I installed the bitcoin program and now it's synchronising, and although I installed it on my very large D: disk it's moving all of the stuff on my little C: disk. It's now around 6 GB in size with 45 ...
3
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1answer
392 views

My wallet hasn't synchronized, can I make a transfer?

My wallet hasn't synchronized, can I make a transfer? I'm assuming that the transaction will not come up on my wallet but im guessing it would come up on the person I send too?
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1answer
378 views

Is there a way to maintain a continually updated copy of blockchain without running a wallet?

This question is in response to being stupid, as I just tried to spend from my B-Qt wallet before it was finished syncing (power outage fun yesterday). Was scary when it froze after hitting send, had ...
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2answers
400 views

Will I get my bitcoins have I been scammed?

Okay, I'm wondering what's going on here. I recently synced my wallet after ordering some bitcoins, but I never received them. The guy who sent them to me, sent me the blockchain address. So, I don't ...
4
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1answer
129 views

Do all block have to be verified every time a new block is broadcasted?

I did a presentation for my office and during the presentation I was asked a question that I was not prepared for. It's a more technical question from my perspective, but someone here might already ...
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0answers
2k views

Sent bitcoins to my unencrypted wallet and encrypted the wallet before file synced, is there any way i can get them back?

Thanks in advance for any light you can shed on my problem.. I think I sent bitcoins from an online wallet to my offline wallet BitcoinQT(0.81) in august. The transaction has been confirmed, but not ...
2
votes
1answer
959 views

Is it possible to speed up block chain syncing with a miner?

Syncing the client with the network can take some time. As I have to do this fairly often, it quite bothers me, especially when on slow devices. (A Pi can't do it in a week.) I don't know exactly ...
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0answers
267 views

Bitcoin-qt on Windows doesn't synchronize?

About six days ago my Bitcoin-Qt stopped receiving blocks, I tried to clear all the existing blocks, but that didn't help, and I've uninstalled and reinstalled Bitcoin-Qt, to no avail. I'm using ...
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0answers
45 views

Bitcoin-QT v0.6.3-beta transaction not coming in to my wallet. Please i really need help with this im a real newbie! [duplicate]

Im waiting for a transaction being made to my wallet on Bitcoin-QT. It has synchronizing with network and is going really slow 46.66% is done 136640 block(s) is left in 3 days. I Dont know what to do! ...
0
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0answers
179 views

Verifying blocked… to quit unexpectedly

When loading bitcoin-Qt version v0.8.5-beta it says verifying blocked then and error message comes up saying that Bitcoin Qt quit unexpectedly. This happened because my computer turned off while it ...
0
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2answers
597 views

The bitcoin-qt synchronization just stopped

Someone recently stole the computer where my Bitcoin were. As my hard drive was entirely encrypted and as I had backups of my wallet.dat file in three different places, I'm not afraid of losing money, ...
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3answers
968 views

Bitcoind (linux) CPU usage through the roof

Basically I'm trying to keep a wallet on linux along with the RPC service so I can receive coins and poll the server periodically for transactions. I'm trying with both 0.8.1 and 0.8.5 and CPU usage ...
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0answers
826 views

Sync with pool by addnode config option

My question is about alt-coins mostly. There is option addnode to specify network nodes. If there is no public nodes in the Internet, but exists mining pool of alt-coin. How can I discovery port ...
2
votes
1answer
8k views

Trying to access my BTC from Bitcoin-Qt wallet that is out of sync

I bought BTC and sent them straight to my Bitcoin-QT wallet. Now opened my wallet (ver. 4.8.3) and it says ~29000 blocks remaining to synchronize but this is not happening even though I have 14 active ...
3
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1answer
1k views

Do all weeks of blocks take the same time to process?

Bitcoin is slowly synchronising Synchronising the network... 78 weeks behind Do all weeks of blocks take the same time to process? Or will recent blocks be slower because Bitcoin is more ...
3
votes
1answer
4k views

Wallet says “unsynchronised”, is that stopping me from seeing my bitcoins that I just received?

I don't see the bitcoins I was supposed to receive today at 3PM and I tried to close the application to refresh it but it still hasn't arrived. I used GoldUX so that he could send my webmoney to my ...
0
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2answers
925 views

I sent my bitcoins from LocalBTC to a unsynced bitcoin wallet program, the bitcoins are not showing up. How do i get them back?

I sent bitcoins from localbtc wallet to a unsynced program, it says 0 in the balance of the program and I really want them back.
3
votes
2answers
862 views

Blockchain download extremely slow at 200 blocks per hour

I am running bitcoind and the blockchain download is very slow at 200 blocks per hour. I am at 225146 and at the current speed, it would take bitcoind a month to catch up. Here is my output from ...
0
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1answer
3k views

Solo mining before wallet got sync'd

So the question is can i start mining(solo)/using my wallet for transactions or whatever when my wallet is not sync'd? I've tried to mine solo but it doesn't work =(.
2
votes
1answer
2k views

Will my bitcoin wallet take prohibitively long to sync as daily transaction volumes grow?

I'm using Bitcoin-qt on Mac and it's been a few weeks since I last fired it up, so it's doing a sync. I've waited a few hours now, despite being on powerful hardware and a fibre connection to the web. ...
6
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2answers
9k views

What is the fastest possible way to download the blockchain?

How to download the blockchain with full bandwidth? How to download the blockchain fast?
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3answers
7k views

Bitcoin-Qt wallet is taking forever to synchronise. Can I just use the same address elsewhere to collect coins?

It will take several days before the wallet is in sync. I already purchased a bitcoin and am waiting for it to transfer into my account using the address that was generated by Bitcoin-Qt. Can I just ...
5
votes
2answers
2k views

What files do I need to copy to a new computer to prevent having to sync with the network?

I think this used to be the blk0001.dat file, but it seems that the block chain is now (since version ?) moved to the blocks/ folder, containing a lot of blk* files, as well as an index file and ...
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1answer
2k views

Bitcoin wallet not syncing

My bit coin wallet sync is stuck, if anything the blocks remaining is increasing. It is not my computer or network because I have another wallet on a different hard drive and that wallet synced in a ...
5
votes
5answers
10k views

How long should synchronizing your wallet for the first time take?

What is the normal synchronzing time for your wallet when you first start? I am using 4G on a wireless and it seems to be taking forever to count down the number of blocks left until it is properly ...