Unanswered Questions
460 questions with no upvoted or accepted answers
5
votes
2
answers
971
views
bitcond and bitcoin-Qt system configuration and bandwidth requirements
What is the best operating system configuration for a computer to run (bitcoind or bitcoin-Qt) and (BFGminer or CGMiner) under Linux, assuming that it will be connected to a 3 Terrahash mining rig on ...
CommunityBot
- 1
4
votes
0
answers
374
views
Is it safe to skip the initial block verification at startup?
The longest step in bitcoin core initialization is "Verifying last 6 blocks at level 3". The number of blocks checked at startup went down from 288 in 2014 to 6 now. Therefore, in order to speedup ...
- 773
4
votes
0
answers
222
views
libwallycore error installing LND on Ubuntu 18.04
I'm setting up an LND node on Ubuntu 18.04. I've installed python3, and cloned the repo. I ran configure, and get this error on the make command:
checking byteswap.h, usability... no
checking ...
4
votes
1
answer
2k
views
Building Signed Bitcoin Transaction in Java
I have been attempting to build my own raw transaction generator in Java which I can then broadcast on the testnet network. The problem is when I attempt to broadcast the transaction it says there is ...
CommunityBot
- 1
4
votes
0
answers
675
views
Bitcoinj: How to fix error "You should use Context.propagate() or a ContextPropagatingThreadFactory"
I'm using bitcoinj from a Scala application... and when I start it, I always get the following errors:
[error] o.b.c.Context - Performing thread fixup: you are accessing bitcoinj via a thread that ...
- 197
3
votes
0
answers
154
views
bitcoind still running after 'bitcoin-cli stop'
I'm running Debian 11, all updates installed. 12gb RAM, massive internal SSD for storage.
$ /usr/local/bin/bitcoin-25.0/bin/bitcoin-cli stop has worked well shutting down bitcoind on my computer until ...
- 161
3
votes
0
answers
141
views
bitcoind performance issues
I am struggling with poor performance of Bitcoin Core full node, which is used as a hot wallet.
There are similar questions already but without an answer or solution
Bitcoind Performance for ...
3
votes
0
answers
628
views
bitcoin TransactionBuilder is not a constructor
I'm trying to send bitcoin with the bitcoinjs-lib library and I get the following error:
TypeError: bitcoin.TransactionBuilder is not a constructor
at sendmoney (/Users/....../bitcoin.js:53:18)
at ...
3
votes
0
answers
1k
views
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 ...
- 103
3
votes
0
answers
75
views
How to segregate wallet from bitcoin core | Run multiple wallets in different servers on one centralized bitcoin node
I am running bitcoin full node in a centralized server. I have many web applications running in various places. I want to connect this web applications with centralized full bitcoin node. How to ...
- 31
3
votes
0
answers
2k
views
How to sign bitcoin raw transactions with Python offline
I have a raw bitcoin transaction created using createrawtransaction
unsigned_tx = "...
CommunityBot
- 1
3
votes
0
answers
1k
views
How to directly query leveldb database to get get a record by transaction hash or by sender's address?
I learned that the blocks and transactions are stored locally in .bitcoin/blocks/index and .bitcoin/chainstate databases, respectively.
I want to make a direct query to those databases to measure the ...
- 77.9k
3
votes
0
answers
6k
views
bitcoin-cli - "error: couldn't connect to server" [solved as per comment]
I have bitcoind 0.13.1 running on a Raspberry Pi. I can see it on the bitcoin network using bitnodes.21.co but I can't connect to it locally with bitcoin-cli.
My bitcoin.conf is:
rpcuser=xxx
...
- 5,116
3
votes
0
answers
742
views
Can I quickly check the cofactor of secp256k1 is 1
I was wondering if there was a quick way to check that the group underlying the elliptic curve secp256k1 was indeed cyclic with the usual point G a generator. I am given the prime number underlying ...
- 1,524
3
votes
0
answers
250
views
Unable to limit tcp bandwidth using tc in QoS for localhost
I am trying to connect few bitcoind instance running on different ports on my local machine and control the bandwidth between those connections. I used the tc utility as following:
#network interface ...
- 507