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Unanswered Questions

456 questions with no upvoted or accepted answers
5 votes
2 answers
970 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 ...
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 ...
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
1k views

Generate addresses from Trezor's xPub using Python

I am trying to generate BIP32 HD addresses from my Trezors xPub key. I keep getting errors with most of the libs our there. What am I missing? pywallet: from pywallet import wallet xpub = '...
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 ...
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
86 views

listdescriptors true fails after importing a 2-of-3 multisig descriptor (prv, pub, pub)

By deafult, in a newly created descriptor wallet that is not watch-only and not empty, listdescriptors true works and gives output. However, here is a scenario that breaks it: Get a new address in ...
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 ...
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 ...
3 votes
0 answers
466 views

Electrum Seed Purpose for MultiSig Wallet

I'm curious as to what exactly is protected by the seed that Electrum generates for a multisig wallet. My knowledge of the protocol implementation is rather basic, so please correct me where I'm wrong ...
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 ...
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 ...
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 ...
3 votes
0 answers
527 views

The setup steps for generating bitcoin addresses programmatically and checking for payments with walletnotify

I have read this question and done some investigation, and I want to make sure I have some of this right. If I have a server somewhere where I can install bit coin (I'm thinking bitcoin-qt on Ubuntu)...

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