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The 2024 Developer Survey results are live! See the results

All Questions

Tagged with
4 votes
1 answer
72 views

Do any full-node clients compress blocks?

Does Bitcoin Core or any other full node capable client compress the blocks in transit on the network or locally on the node's filesystem? I used 7z to compress a handful of my locally stored blocks, ...
Geremia's user avatar
  • 4,704
0 votes
0 answers
126 views

How to most efficiently keep in sync blockchain on offline computer (including through bitcoin-qt upgrades)?

I have bitcoin-qt running on online computer. I want to: copy blockchain to offline computer (preferably using WORM media for security reasons) from time to time update offline copy with newest ...
cryptogopher's user avatar
1 vote
2 answers
306 views

Very hard to sync Core Client from scratch

Recently I started running a Core 15.1 node with the blockchain on an external hard drive, and found it very hard to fully sync the blockchain. The problem I keep running into is that (in about 90% of ...
2J87qy5arXEXVhc9hfT2's user avatar
1 vote
1 answer
503 views

Migrate from Bitcoin Core Wallet to somewhere else before sync completed

I created a Bitcoin wallet yesterday using Bitcoin Core Wallet application and bought some bitcoin via buy.bitcoin.com to the address mentioned in File>Recieving Address in my Bitcoin Core Wallet. ...
Michel Gokan Khan's user avatar
1 vote
1 answer
177 views

How does intial block download work at P2P layer?

A simple DOS attack while IBD could be as follows: The fresh client is currently downloading block 100. Then it is offered 10 blocks at height 101, each claiming they are the heaviest chain 9 out of ...
sanket1729's user avatar
  • 1,402
1 vote
0 answers
532 views

Blockchain download stuck on Bitcoin core wallet

The caching up process was progressing (slowly but still progressing) until it got stuck after processing 436820 blocks: https://i.sstatic.net/c8h0z.png 3 days after, I'm still at 70.76% Says I'm ...
jaypi's user avatar
  • 11
2 votes
1 answer
230 views

Bitcoind suspend when Synchronizing blocks

My bitcoind started synchronising blocks. The bitcoind version is 0.93. When the bitcoind found an orphan blocks in the synchronising process, it seems stop and did not work. the message from the log ...
Eleven's user avatar
  • 187
3 votes
1 answer
776 views

Why does the Bitcoin core client use so much CPU time while synching?

I have always noticed the huge increase in cpu usage when I opened my client for the first time in a few days. I was wonder what this is from? I would imagine verifying all of the signatures of the ...
KDecker's user avatar
  • 487
0 votes
1 answer
84 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.
fefe's user avatar
  • 109
1 vote
2 answers
1k 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, ...
Ted's user avatar
  • 11
4 votes
3 answers
2k views

Is the synchronization process supposed to be downloading at less than 5kB/s?

I've been running the bitcoin-qt client for over a week now trying to catch up with the block chain (closer to three weeks if I count the first time I had to synchronize everything). Looking at my ...
zants's user avatar
  • 41
1 vote
3 answers
3k views

Does having the Bitcoin Client running always use up a lot of the CPU?

I have the Bitcoin Client running on my laptop, it is up to date and now fully synchronised, but it is running the CPU at almost 100% and so makes doing anything else extremely slow. Is this normal? ...
Anthony's user avatar
  • 71
6 votes
3 answers
12k views

How long does it take to download the blockchain? It's been over a day and still going

I'm a newbie to bitcoins, and need some help! I downloaded the Bitcoin client and installed it on my laptop. It is 'Synchronizing with the network' and has been doing this for over a day. Is this ...
Anthony's user avatar
  • 71
12 votes
1 answer
13k views

Synchronizing with network – What does it mean? [duplicate]

The messages: synchronizing with network xxx blocks remaining what does that mean?
dlm's user avatar
  • 121
3 votes
1 answer
3k views

Synchronising official bitcoin wallet for the first time; at 95% started going backwards

I.E. 9900 blocks remaining, 9904 blocks remaining and the total percent synced is decreasing. Is this normal behaviour? I'm on a mobile broadband connection but http connections are working just fine. ...
satoshiisprettycool's user avatar

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