Questions tagged [synchronization]
This tag should be used for questions about synchronizing a Bitcoin client. This is the process of bringing a Bitcoin client up to date with the blockchain.
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Weak Subjectivity Checkpoints trust assumptions
With AssumeUTXO it should be possible to sync to chaintip from a recent snapshot of the UTXO set, rather than from the genesis block (although there's background full validation after sync). This is ...
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My multibit core synchronization is stuck Whats the reason [duplicate]
For the past six days since I downloaded the multibit core, I wanted to recover my wallet I still have my recovery phrase and password, and open the multibit core and the wallet was synchronization ...
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Downgrading Bitcoin Core 24.99 (latest source code) to 24.0.1
I wanted to build Bitcoin Core myself, so I followed this official guide, but in the process I failed to realize that by cloning the git repo I would just get the latest source code, not the latest ...
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What could be the reason that my node syncs so slowly during Header Synchronization?
I¹ am trying to sync Bitcoin Core v24.0.1 on my Desktop with 16 GB RAM and an Intel Core i7-7700HQ processor, but it is taking forever even to get past the header synchronization. It tells me that it ...
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How long does it normally take to set up a test node? How much of your disk is utilized?
I did a complete factory reset on my computer and simply started over. I have a Aorus 5SE with windows 11. I am using VirtualBox 7.0.6 and Ubuntu 20.04.
My new virtual machine has 4GB of base memory, ...
14
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Why is witness data downloaded during IBD in prune mode?
Why do pruned nodes download (segregated) witness data during IBD if much of that data is marked as Assumevalid?
These nodes seem to be downloading witness data just to prune it. Since we already know ...
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170
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Is it true that Taproot accidentally now allows for NFTs stored on chain up to 400kB per NFT? And is there no solution/mitigation defined yet? [duplicate]
This post raises some questions: https://twitter.com/pourteaux/status/1618364013712375810?t=uHlLpWVz_ACFPrKAwF68XA&s=19
My main question is whether the above post actually constitues a correct ...
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Why is there a need to flush the UTXO set when you prune blk*.dat and rev*.dat files during ibd?
As I understand, when Bitcoin Core has pruning turned on, it will flush the dbcache when it prunes unnecessary blk*.dat and rev*.dat files during ibd.
In https://bitcoincore.reviews/20827, it states:
&...
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Does pruning during IBD reduce the ability to utilize the dbcache fully?
I'm running IBD on a machine with 8GB ram with prune=550 and dbcache=7000 and noticing that memory usage is not going above ~880mb. Seems unusual and I assume it's related to pruning. I found a ...
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Bitcoin Core download crashed
I was adding a new drive to my PC when Bitcoin Core download crashed ..no idea why, anyway I cannot reboot and have no access now, I was in the middle of slowly downloading the blockchain to get ...
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Often seeing Rewinding blocks... and Loading block index
Every so often I see these error messages in Rewinding blocks... and Loading block. What is the cause of those error messages? I am using the core wallet.
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Skip IBD on pruned node?
I'm trying to run a light bitcoind node for testing purposes on mainnet, with minimum startup time.
./bin/bitcoind \
-prune=550 \
-txindex=0 \
-assumevalid=...
- 63
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Stop and Restart Service while BTC Core Syncing?
Is it possible to start and restart the Bitcoin Core service during the syncing process without loss of work?
What happens to syncing if the Server fails or shuts down, i.e. a power failure?
I would ...
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Recover an implement old Multisignature Wallet with different Keys
I have a problem with a multisig wallet. The keys are no longer accepted by the console. Only a part of the keys can be inserted. The wallet is then also displayed to me. What happened afterwards is ...
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Bitcoin-qt exits silently after syncing blocks until before 24 hours
I shutdown bitcoin-qt (version: 23.0) around two weeks back. Now when I relaunch it, it syncs blocks until 24 hours and then silently exits. debug.log file contains the following as last line -
2022-...
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Bitcoin core unable to write cache to disk
I have been fiddling with this error for a little bit now and wondering what's going wrong. I'm running a testnet instance of Bitcoin Core on a relatively low-spec EC2 instance (2MB ram, 40gb disk)
It ...
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Bitcoin Core: estimated time to synced, without GUI
I enjoy how the Qt program reports how much time remains to complete the chain synchronization, but I don't know how to get that without using the GUI.
Can you configure bitcoind to report that? Can ...
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Error `settings.json file has no read or write access` - but permissions OK
I was downloading the whole Bitcoin blockchain and the download stopped and I got an error message that the settings.json file has no read or write access, but I checked the permissions of the file, ...
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Can Bitcoin Core Blockchain initial sync time in BitcoinQT be sped up?
Given the following platform hardware and internet data speed (provided below), what settings are recommended for fastest possible blockchain download and sync?
This is the hardware I'm running:
Note:...
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Why does CLN (Core Lightning) sync from Genesis while LND only syncs from the wallet's birthday?
I've installed two major Lightning Network implementations, CLN (formerly c-lightning) and LND, with bitcoind testnet as backchain on the same server. On the first startup I noticed CLN synchronizes ...
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bitcoinj startAsync() causes app to fail repeatedly
I have no experience with android programming. I am just trying to build a simple wallet.
Following is the trial code:
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
...
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1
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86
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Unprune & Re-Download Failed. Core asks for a "-reindex" due to chainstate, then fails
I was attempting to return from pruned to unpruned chainstate. Unchecked the pruned box. Core cautioned this would require re-download of the blockchain in its entirety. OK, fine. Shutdown Core to re-...
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What should I do about these messages in Bitcoin-core's debug-log?
Help, with bitcoin core : AFTER the Rescan :
1 - rescan
2 - response output, on the debug file out:
3 - FlushStateToDisk: write coins cache to disk (coins, kB) completed (s) , OK
4 - Imported mempool ...
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2
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Why Don't Nodes Download Blocks off the network directly instead of sending various messages to other nodes?
My understanding of updating a node's incomplete blockchain is that:
A node with an incomplete blockchain (let's say its been offline for some time) will send a getblocks message and then will receive ...
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How to install Armory Wallet on MAC MINI 12.3.1 MacOS Monterey?
How to install Armory Wallet on MAC MINI 12.3.1 MacOS Monterey ?
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Bitcoin Core shows 1 year and 21 weeks for synchronization when using an external disk [duplicate]
I am getting 1 years synchronization message:
and I am stuck on January 2018 for the whole day. Will it improve, or I have to use a better disk? Is Bitcoin Core unusable with an external disk? Or it ...
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429
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Bitcoin core synchronization too slow, only 16 hours of blockchain in 20 minutes
I have Bitcoin Core stored on my external disk and currently I am on 39%. but the problem is that it is getting slow for some reason. The Bitcoin Core Qt app is constantly beachballing on my Macbook ...
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How to get time left using command line during initial block download?
When using GUI version of Bitcoin Core, time left before initial block download has completed is displayed.
Using bitcoin-cli, one can see verificationprogress, but is there a way to get time left ...
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Is there a way to sync bitcoin core without verification?
As the question asks, is there a way that one could sync the bitcoin client without verifying all the blocks. During IBD, downloading the blockchain isn't the bottleneck, what takes time is verifying ...
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115
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Why does Electrum never complete synchronization with a server?
How do I diagnose why electrum never finishes synchronizing?
I've tried selecting networks individually without success.
Can I ping a server to confirm connectivity?
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252
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How long does it take for Multibit to synchronize an old wallet?
I'm trying to restore my old wallet which I had created on Multibit around 2016 and held a fraction of a bitcoin, as far as I can remember.
I have not touched the wallet for years until today when I ...
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123
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How are funds verified?
I understand that transactions go into mempool and a miner "verifies" the transactions such as ensuring the user has the appropriate funds and correct signature. Specifically, how are ...
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BTC synchronization in Bitcore [duplicate]
I had kept some BTC for for synchronization in BITCORE but now I need money, so want to SELL my BTC but the process of synchronization is still going on.....
In that case can I stop the process of ...
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What work is needed to close a block from 2013
Please could you tell me what work is needed to close a block?,also is it possible to to do this while not fully synced?could you also tell me what information would you have to have access the ...
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Time needed for Bitcoin core synchronization
I had put on the process of synchronization on BITCOIN CORE and it has been around 2years since I had started the process and still its not completed, therefore now I would like to put some questions ...
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How can I -abort ./bitcoind -reindex-chainstate?
I made files re-accessible. Now we could return to a later, already synchronized state with the files. I tried to put ./bitcoind -reindex-chainstate=0, also in a bitcoin.conf, also directly calling ...
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Is there a faster way to download IBD for bitcoin core?
I am trying to setup a node using bitcoin core https://bitcoin.org/en/bitcoin-core/
but it is taking ages to download. Running for past 2 days and downloaded only 15 % . I have a decent internet ...
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Power outage during Bitcoin Core initial synchronization
I had a power outage when I was half way through my Bitcoin Core initial synchronization. Is there a way to pick up where it left off or do I need to start over?
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What happens if a peer doesn't respond to "getheaders" or "getdata" on time?
Suppose a node receives the same "inv" message from many peers.
Will the node send "getheaders" requests to all the peers or only one of them?
Does the node keep a timer for ...
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Do nodes maintain a download window after the initial syncing?
I was going through the Bitcoin P2P guide. https://developer.bitcoin.org/devguide/p2p_network.html
It says that the nodes maintain a 1024-block download window during the initial syncing. However, at ...
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Missing Transaction on older Bither wallet on older computer
Please note I am not that technically savvy nor know that much about cryptocurrency. I am helping out a friend that (for disability reasons) cannot ask himself.
My friend purchased and has bitcoin he ...
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Can you prune blockchain without redownloading?
I've downloaded the whole blockchain now I want to run a pruned node on another device. But if I klick on prune block storage in bitcoin core, it tells me that reverting this setting requres re-...
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Do peers advertise their chain work?
If yes, is this how a node decides that the peer has the best chain for headers-first download?
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Where does a full node get the blockchain from for Initial Block Download?
I understand that a full node needs to do an IBD before being able to verify transactions. So, it downloads the ledger up to now, which is known as Initial Block Download.
But what I don't understand/...
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Can I find the address of my Bitcoin in the debug.log file?
I cannot download the entire block chain (I’ve tried four times now and failed) so I can’t replace my encrypted old wallet.dat file into the blockchain and do the rescan to check my coin balance. My ...
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Can a full node understand the transactions it downloads from the Bitcoin network?
I understand a full node downloads and validates the entire transaction history. Can a full node read and understand these downloaded transactions, or is it just just keeping a copy of encoded ...
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Raspiblitz slow sync performance
I'm syncing my raspberry pi 4 model B, 4GB and after 4 days I'm less than 50% synced. It seems as though there is something wrong with bitcoind as there are some weird symptoms going on. The pi is ...
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No new UpdateTip. Just "Pre-allocating up to position ..."
I'm IBD'ing a new testnet node 0.21.0
Why are there long periods of no UpdateTip messages? I have 10 connected peers.
Excerpt starting at 00:13:
2021-04-05T00:13:17Z UpdateTip: new best=...
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Is there some kind of USB antenna I can buy to be able to use Bitcoin even when there is no Internet?
Let's say they cut the Internet tomorrow. I will still have my private keys on my offline computer, but I won't be able to sync the blockchain (as won't anyone else) nor would i be able to make any ...
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Bitcoin Core resume
iam downloading the 350GB Core database via slow network.
iam not shure, if an correct resume occurs, if i need to breask the transmission.
my question:
is there any risk for inconsistence of bitcoin ...
