All Questions
30,217
questions
2
votes
2
answers
118
views
Can the same set of private keys be used multiple times in a multisig wallet?
Is there any limitation to how many times the same set of private keys can exist within a multisig wallet? For example, could a 3 of 4 multisig wallet be created with two of the four keys being ...
- 151
1
vote
1
answer
36
views
BTCPayServer - importing wallet using zpub
I'm trying to connect my BTCPay server to hardware walet by entering the public key. The HW wallet account is P2WPKH, the public key has a zpub… format.
When I enter the key, server correctly ...
- 11
0
votes
0
answers
89
views
I forgot the last few digits of the password to my Bitcoin Core wallet. How can I recover it? [duplicate]
As of 2013, I created a Bitcoin Core wallet and transferred 2.968638 BTC into the wallet from another wallet. At that time, I was saving money to buy bitcoins. Unluckily, I set the password to be ...
0
votes
1
answer
91
views
What does the error “wallet files should not be reused across chains” mean?
I downloaded Bitcoin Core 25.0. When I try to open my wallet I get this error:
Wallet loading failed. Wallet files should not be reused across chains. Restart bitcoind with -walletcrosschain to ...
- 1
1
vote
0
answers
69
views
Connection issue between Sparrow and Bitcoin Core
I currently have my Bitcoin Core node set up to utilize an external hard drive for the data directory in order to conserve space on my laptop. Initially, when I connected Sparrow to the node for the ...
- 69
2
votes
3
answers
138
views
How to buy 1,000,000 BTC
Let's imagine that I had enough fiat money to buy 1 million bitcoin ($30,000,000,000). How would I find a seller? Are there even that many bitcoins offered for sale? Or would it be easier to start a ...
- 53
2
votes
3
answers
374
views
What are MATT opcodes?
There is plenty of discussion in the Bitcoin-dev mailing list about MATT opcodes, and I would like to know what these are.
- 115
0
votes
0
answers
31
views
How to run master mining node with semi-offline slaves?
How can I run a master mining node with semi-offline slaves?
I have a single master node that is fully connected to the internet (bidirectional).
The master node is also connected to thousands of ...
- 101
1
vote
1
answer
35
views
Blockchain API not sending subscribed info
I'm having trouble receiving WebSocket messages for address-related events. Here is the code that I'm using (trackAddress gets called externally and I'm sure it sends the right thing). I also tried ...
- 11
0
votes
3
answers
41
views
Move p2pk with addresses
This is strange for me that there exist over 30 000 of p2pk with addresses mainly with very high balance and these funds weren't moved yet. There are Linux tools to scan blockchain for them and note ...
- 141
1
vote
0
answers
47
views
Issues Installing Electrum Personal Server with Sparrow and Bitcoin Core
I'm trying to set up Electrum Personal Server (EPS) to work with Sparrow Wallet and Bitcoin Core. I've followed the standard procedures for the setup, but I've run into some issues.
Setup Details:
...
- 11
4
votes
2
answers
527
views
Is there a well defined last block?
It's fairly well known when the last bitcoin will be mined, but is there a well defined last block?
By that I mean, is there a block height H after which Bitcoin Core nodes will refuse to accept any ...
- 147
0
votes
1
answer
47
views
How to download full BTC chain with limited internet
I am running linux mint on a laptop with an external ssd, and want to set up a full BTC node. My problem is that I only have jetpack internet which won’t handle a full sync in one go. I can take my ...
1
vote
3
answers
115
views
What protocol do bitcoin nodes use to talk to each other?
I assume it's TCP, but is there some other software used to send and receive data?
So how would I program a very simple C++ program that sends a test message to a node?
- 53
0
votes
1
answer
66
views
What happens under the hood when the Bitcoin Core application is launched i.e. when the bitcoin icon is clicked on the computer's desktop?
Does the computer read all of the files in the Bitcoin application at the same time, or which files get read and processed before other files?
- 115
0
votes
0
answers
104
views
Age OLd bitcoin core wallet ".dat or .bak or nothing or Dumpwallet .txt or dumping pywallet "recorder type wallet ??
I have one wallet.dat "or lot of wallet", but he's valids !
why, when I loadwallet or import my dumpwallet file,
My bitcoins...
With old age, on old wallet bitcoin-qt (bitcoin core) version ,...
1
vote
0
answers
42
views
How does mining work on a technical level?
I want to make a scrypt/sha256 miner for Bitcoin and altcoins in C to learn more about how mining works in Bitcoin, altcoins and learn more C. getblocktemplate gives some data that is needed for ...
- 11
1
vote
1
answer
88
views
Trying to make SIGHASH_SINGLE transaction
I am trying to make a SIGHASH_SINGLE transaction.
I have two inputs, one output. I understand that second input can be not signed (really?).
Script I have is:
#!/usr/bin/env python3
import hashlib
...
- 141
0
votes
0
answers
17
views
Do bitcoin mining trade company ask a lot of fees? before transaction [duplicate]
Please, please, Please Please answer anyone. Can please anyone tell me is there are a ton of fees to be paid before transferring the btc profit to bank account?
I feel I got scammed by a woman who ...
- 1
0
votes
0
answers
38
views
If I solved y²= (x³ * ax * b) mod p [as it is] what would I gain or be able to do with it's algorithm?
So the calculations for secp256k1 affirm to the formula y² = (x³ * ax * b) mod p of which is said to be impossible to calculate (as is) because of arbitrary large numbers involved.
Hypothetically if ...
- 75
0
votes
0
answers
30
views
Are some derivation paths more secure than others?
I'm planning to create a seed which will be my main BTC "account". I've been reading up on how the private master key is derived from the seed, and how keys are derived from a master private ...
- 55
0
votes
0
answers
21
views
How to calculate the pool difficulty based on mining.set_difficulty method from Stratum protocol?
I am trying to build a simple python cpu miner and I have referenced a few other github repos (for learning purposes not for money purposes). I've noticed that many of them simply ignore the mining....
0
votes
0
answers
38
views
Help in bitcoins
I made a withdrawal request on the free crypto website. Where and how can I follow up on the problem? WITHDRAWAL HISTORY WALLET ADDRESS : TJQ14QQ6RCcRH4EYm3JyhnQMhHfni33dwv AMOUN : 0.35672 ВТС Date : ...
0
votes
1
answer
30
views
Do p2pk and SIGHASH_SINGLE still working nowadays?
Seems like p2pk - pay to public key may be working or not in modern wallet apps. Is it still working or not?
EDIT: Can old p2pk addresses be used to move balance to new addresses (for example bc1q...)?...
- 141
1
vote
1
answer
39
views
What is the concept behind extracting point x from point y given that both are correspondants of G ^ k mod p
Within the encryption protocol that governs bitcoin (Secp256k1 to be precise), the generated points publicKey_x and publicKey_y are a results of calculated coordinates within the finite field " G^...
- 75
1
vote
1
answer
104
views
How can one examine the contents of the wallet.dat file using sqlite3?
These two questions (1, 2) discuss what is in wallet.dat. Andrew Chow states in 2017 (when the database was still BDB and not sqlite):
The wallet.dat file contains your private keys, public keys, ...
- 14.5k
0
votes
0
answers
49
views
Redeem script for input #0 doesn't match the scriptPubKey in the prevout
I'm trying to create a new bitcoin transaction using bitcoinjs-lib. Here is my transaction.
{
"weight" : 661,
"txid" : "...
- 23
0
votes
1
answer
33
views
HTLC routing issues in custom LN plugin (c-lightning) on regtest network
I am working on a custom routing plugin for CLN on a regtest network. My goal is to compare its performance against the classical rebalancing plugin provided by the CLN community.
Now I am trying to ...
- 23
0
votes
0
answers
12
views
can i check a Bitcoin payment is valid before I pay for exchanges? can I check the receipt number and the transfer number somewhere or with anyone? [duplicate]
i am due to receive a Bitcoin payment i earned i would like to chat or speak by phone with a broker or a management account specialist and references the receipt number and the transfer number ...
0
votes
1
answer
44
views
Is a private key that is created with an additional passphrase included in the existing 24 worded private key basket?
We know that there are finite number of private keys out there that are derived from 24 words. If I create a wallet with an additional 25th word passphrase (which is not in the existing 2048 seed ...
- 301
2
votes
1
answer
81
views
Probability of Generating a Bitcoin Address with Specific Starting and Ending Characters
I've recently come across a situation where scammers are generating (bitcoin) addresses that have the same starting and ending characters. This is concerning as many people, including myself, often ...
1
vote
2
answers
37
views
Bitcoin inheritance
For a while now I've been wondering what is the best way to setup an inheritance plan for the bitcoin I own. Has any one here set one up? What’s your plan?
- 13
0
votes
0
answers
32
views
CLN low onchain TX stuck - speedup with rbf? [closed]
i wanted to send some cln onchainfunds to another wallet.
havent checked mempool fees up front. know its stuck in the mempool.
how can i inrease the feerate by commandline?
(tx has RBF set)
1
vote
1
answer
114
views
What do the files in bitcoin/src/rpc/ do?
I know that RPC stands for Remote Procedure Call. Does Bitcoin Core do RPCs with other nodes on the network?
- 115
0
votes
2
answers
54
views
How can I track my bitcoins to the blockchain?
I'm sorry if this is a stupid question; I'm just trying to learn more about Bitcoin and the blockchain. How would I identify the bitcoins that are mine within the blockchain? I can use Trezor to ...
- 1
2
votes
0
answers
22
views
No inv messages from inbound nodes
I'm writing a tx relay-only node that can accept inbound connections and make outbound ones. Just for research.
What I'm seeing that on inbound nodes the initial handshake completes and the connection ...
- 41
1
vote
0
answers
29
views
Understanding the details of ordinal transfer on bitcoin
Trying to develop a bitcoin ordinal wallet and want to make sure I'm properly transferring ordinals from one owner to the next. From my understanding of bitcoin ordinals theory its based on a FIFO ...
- 31
1
vote
0
answers
32
views
Understanding ordinal encoding
I'm working on developing an ordinal wallet and from what I understand ordinal mint transactions can be identified by searching vin[0].witness for the envelope header "ord" (in hex 6f7264) ...
- 31
0
votes
2
answers
61
views
When the validity of scriptPubKey is checked?
I have a couple of questions related to validation of script in transaction output (scriptPubKey).
I apologize for a little more text, but I tried to explain in detail what I don't understand.
Since ...
- 860
0
votes
2
answers
72
views
How to get UTXOs Data from the network Using python?
I want to have the Bitcoin Network UTXOs only for a data analysis project and the purpose is visualization of the time series of 1>BTC wallets . how can I do it using python ? ( or is there any ...
1
vote
0
answers
34
views
Is there a BitcoinAbuse.com archive?
BitcoinAbuse (https://www.bitcoinabuse.com/) was a community-backed project where you could download the entire database in return.
Since it got acquired/merged into https://www.chainabuse.com/ that ...
- 11
3
votes
1
answer
163
views
What is the false positive rate for compact block filters?
I read in the mailing list that the rate of false positives for compact block filters is small, but what is the actual rate?
- 71.6k
0
votes
0
answers
23
views
getting private key from Bitcoin Core wallet [duplicate]
I need priv key for my soft, but I faced with such problem:
Only legacy wallets are supported by this command (code -4)
How to change wallet type (I think root of problem is it) or how to fix this ...
1
vote
1
answer
154
views
What do the following lines of code do in the context of sending Bitcoin?
I have recently started dev on Bitcoin and have a doubt regarding the following code. I have a dApp that prompts users to connect their BTC Wallet and in return, I get their address(testnet).
I want ...
- 13
0
votes
1
answer
42
views
Sent btc from coinbase, says confirmed but recipient says they’ve not received? [duplicate]
I sent btc out of my coinbase account 11 days ago now (£229.02 i was purchasing an item), everything says confirmed on my end and the transaction has had over 1000 confirmation now. So I’m confused ...
- 3
-1
votes
1
answer
47
views
I dont remember my wallet address it's been a year and half since I didn't withdraw [duplicate]
Withdrawal I forgotten my wallet address how to discover it
- 1
2
votes
1
answer
141
views
If there are 32 halvings, why is the if block in the GetBlockSubsidy function checking if there are 64 or more halvings already done?
If there are 32 halvings, why is the if block in the GetBlockSubsidy function checking if there are equal or more than 64 halvings?
- 301
0
votes
0
answers
17
views
is mynodebtc.com provide free public remote node
Is mynodebtc.com open source and does it offer a public free node that can be accessed from Bitcoin Core without downloading the full node?
- 11
1
vote
1
answer
42
views
How do I stop Bitcoin Core from interrupting me with the "Loading wallets..." window?
I run Linux. Debian 12. XFCE. I have installed Bitcoin Core. I think this same thing happens on Windows as well.
Basically, I have it start at boot. Then, after many minutes have passed and I have ...
- 11
2
votes
1
answer
57
views
Where can I find the list of all possible sendrawtransaction RPC error codes & messages?
Where can I find the list of all possible sendrawtransaction RPC error codes & messages?
Such as this:
{"code":-22,"message":"TX decode failed. Make sure the tx has at ...
- 105