All Questions
29,648
questions
0
votes
0
answers
2
views
Create and spend P2WSH that locks coins with OP_CHECKLOCKTIMEVERIFY
I'm attempting to create a P2SWH address with a script that locks the coins for some time. And then I want to spend those coins from that address.
I've read a lot, some of the most relevant:
BIP173
...
- 1
0
votes
1
answer
136
views
Multibit seed/ or files to Electrum wallet
i tried moving multibit wallet as explained here but failed. https://youtu.be/E-KcY6KUVnY i have the seed and password from Multibit wallet and some files from backup folder in the 'mbh......aes' ...
CommunityBot
- 1
1
vote
1
answer
10
views
Who determines a hard fork [duplicate]
I'm trying to really get a deep understanding of the roles miners and nodes play in enforcing the Bitcoin rules.
If a hard fork is presented, who determines if the fork is accepted, nodes or miners? I ...
- 21
2
votes
1
answer
164
views
Calculate/Verify the Hash of a Bitcoin Block Header
I want to calculate/verify the hash for block #722,460.
Here is the JSON:
"hash": "00000000000000000002b73f69e81b8b5e98dff0f2b7632fcb83c050c3b099a1",
"confirmations": ...
CommunityBot
- 1
0
votes
1
answer
18
views
My issue is same as many others sent BTC but funds were not received
even though the transaction shows as confirmed the receiver has not received the funds. I looked on Blockchair by entering the receivers wallet address and doing a history search and guess what it ...
- 68.6k
0
votes
0
answers
24
views
Electrum wallet to Unstoppable watch wallet
Should I be able to use the electrum MPK to import a watch wallet into Unstoppable? The unstoppable android app crashes when I try to do that. Is this a bug or am I doing smth stupid?
It did work the ...
- 68.6k
0
votes
2
answers
20
views
Why distinguish between receiving address and change address
I see receiving address and change address in wallet client and bip44. Why distinguish between receiving address and change address?
What will be the problem if I use only change address chain for ...
- 68.6k
0
votes
1
answer
10
views
Transaction fees for multiple outputs
I received a transaction from an exchange. It has 30 outputs, the fee was - according to blockchain.com - roughly 18k sats. Is this the fee per output or for the entire transaction? Is it cheaper - ...
- 68.6k
4
votes
3
answers
6k
views
What is "version" used for in Bitcoin transactions? Does it have any meaning?
Some bitcoin transaction have version 2. For example, this transaction
https://blockchain.info/tx/b7022124bc7f31af9342d2f7af98ad9f60f2fd4fa544bf1affca8a436aadda41
if you request a hex (by adding ?...
- 68.6k
0
votes
1
answer
12
views
Why would someone create a transaction where the fee is bigger than the sum of the outputs?
At the moment I am writing this question, the network is extremely bloated with, more than 60k transaction in the mempool. Inspecting the recent transactions, I found 4 very weird examples, at least ...
- 68.6k
0
votes
1
answer
29
views
Total Decentralization
I am fairly new to Bitcoin and do not know the ins and out of using the Electrum wallet(i was recommended this wallet by bitcoin.org). I see on the internet that there are several methods by which I ...
- 51
4
votes
2
answers
3k
views
Debug log for RPC access log
How can I enable RPC access debug log on my bitcoind. My application calls some commands to the bitcoind via RPC. I want to see all of RPC accesses with their parameters like command name and caller ...
- 111
2
votes
4
answers
1k
views
Most efficient way to calculate fee from getrawtransaction?
I would to get the fee when I search for a transaction using getrawtransaction, but the JSON-RPC does not return this.
https://chainquery.com/bitcoin-api/getrawtransaction
So to achieve this, my ...
- 101
4
votes
1
answer
1k
views
Can you break down what data is encoded into a bech32 address?
Can you break down what data is encoded into a bech32 address?
e.g. bc1qw508d6qejxtdg4y5r3zarvary0c5xw7kv8f3t4
How do bech32 addresses on testnet, regtest, signet compare?
- 12.7k
0
votes
1
answer
673
views
Java: bitcoinj; how to download a full block?
I would like to download a full block using Java and bitcoinj and then parse it to an array to be able to work with it. Here is some (very basic) pseudocode:
connect to network;
download ...
CommunityBot
- 1
0
votes
1
answer
147
views
Electrum. Payto argument from_addr
I need to specify address to send from.
I want to use option createnewaddress. And then send money from this addresse useing payto and from_addr option.
When I do like that, i got error message not ...
CommunityBot
- 1
0
votes
0
answers
9
views
Is this legit i remember signing up for it but is it a scam? [duplicate]
Look I signed up for this app a year ago and I got an email today that said my account has been inactive for a year and I have 24 hours to get my money or it goes back to the company. I Google the ...
1
vote
1
answer
24
views
Bitcoin Mining Pools Centralization
I read a couple of articles and watched some YouTube videos, but couldn't find a super convincing argument for why centralized mining pools are not a huge issue. I get that from a Game Theory ...
- 68.6k
0
votes
1
answer
95
views
Open channel (LN) in Electrum testnet is not accessible?
I use Electrum wallet (version 4.3.2) on tesnet (apple desktop).
The testnet balance is 0.02 tBTC.
Under the 'Channels' tab, the option 'Open Channel' is there
but it is not clickable.
Is LN testnet ...
CommunityBot
- 1
1
vote
1
answer
30
views
Reading blk.dat files using pybtc does not yield transactions
I am trying to parse the blk.dat files using pybtc but I can't seem to get this right.
f = open(block_filename, "rb")
lines = f.readlines()
for block in tqdm(lines):
...
- 22.2k
0
votes
3
answers
443
views
I lost my passphrase to my 150 BTC wallet
Yeah, title says it all, I lost my passphrase from my Bitcoin Core wallet I made in 2009, losing around 3.200.000€ ( 150 BTC ).
I would love to know if there's any possible way I could recover the ...
CommunityBot
- 1
0
votes
2
answers
23
views
Deleting data in blockchain
I have read that block in blockchain is immutable since the next block is storing the hash of previous block .
What if , to remove a block from the blockchain , I set the "previous hash" of ...
- 172
0
votes
1
answer
23
views
Are fees smaller to transact to addresses generated from a zpub master public keys compared to xpub?
Will it affect the fees in any way when one sends money to an address generated from zpub master public key compared the xpub?
What might also be part of this question is, understanding whether it is ...
- 4,852
0
votes
1
answer
91
views
What is a safe amount of characters in a passphrase?
The coldcard and trezor both has support for a passphrase. What amount of characters in this passphrase that would be considered unbreakable with current technology and within some years of ...
- 540
3
votes
1
answer
22
views
Error creating a Taproot descriptor with a single key as script path
I need to implement 1 of 2 multisig with P2TR.
My friend's Bitcoin public key is 0374d5f29bc6c15066437856c512f7f9e5a14a1eb93cab2776d33b27b4103c62d8.
My own Bitcoin public key is ...
- 4,852
0
votes
1
answer
431
views
What are some http mining pools out there?
The open source FPGA miner with source available at https://github.com/progranism/Open-Source-FPGA-Bitcoin-Miner does not support stratum, so in order to test it, I need an http pool. Are there any ...
CommunityBot
- 1
0
votes
1
answer
27
views
Failed to start Bitcoin daemon
I set up Tor with bitcoind. After that, when I started the daemon, I got the following error.
Error: Cannot set -bind or -whitebind together with -listen=0
My bitcoin.conf is:
server=1
txindex=1
...
- 4,852
1
vote
1
answer
20
views
What wallet size difference to expect between Bitcoin Core (binary) and Electrum (json) wallet files?
Imagine a relatively big wallet with tens of thousands of addresses and 3x transactions.
Now, let's say I restore such a wallet and do full re-scan in two applications - in Bitcoin Core and in ...
- 22.2k
2
votes
1
answer
178
views
Wallet for btc bot
Which bitcoin wallet should I use to manipulate it programmatically?
I don't want to use heavy bitcoin-core. But as I understand there are different kinds of bitcoin's thin clients: some outsource ...
CommunityBot
- 1
2
votes
2
answers
2k
views
Confused about UTXO management and consolidation
I have a few questions regarding utxo management and consolidation. I know that the more UTXO's you have, the heavier your transaction will be, the more fees you'll have to pay.
The things I don't ...
2
votes
1
answer
179
views
Multibit HD only sees one peer
Multibit HD is only connecting with one peer. This issue randomly started a few weeks ago. Initially, I had to keep restoring my wallet to a previous date since my balance kept reverting to ...
CommunityBot
- 1
0
votes
2
answers
137
views
how to add a buy transaction using bitcoin @ cryptocompare.com
I'm using cryptocompare.com to track my bitcoins and altcoins.
I've purchased some altcoins, and added these altcoins to my cryptocompare.com portfolio, and ensuring I entered the amount per unit in ...
0
votes
2
answers
360
views
Bitcoin Transaction using API with Custom Fees
I want to transfer Bitcoin from one individual address to another using API. But I want to set Transaction fees as per my requirement. So How can I do it ?
Right now I am using blockchain-transaction ...
CommunityBot
- 1
0
votes
1
answer
171
views
Coinbase tells me to send from electrum to my private key?
A few years ago I sent my BTC from Coinbase to Electrum on windows PC. That apparently went fine because Electrum showed the correct balance. Then I received 12 keywords and a hash (starting with 17)...
CommunityBot
- 1
0
votes
1
answer
510
views
how can I recover my private key from my passphrase and password
I decided recently to get some BTC and bitcoin core was the storage solution I decided on.
I downloaded the software, and all seemed good. No messages about storage or such.
Around a month later I ...
CommunityBot
- 1
0
votes
1
answer
18
views
0
votes
1
answer
12
views
I deleted a transaction after:The Transaction is only available on your local machine
I waiting for confirmations from a transaction from another person. The issue it that it's only 3 sat/vb.
On my electrum wallet I got the following:
"The Transaction is only available on your ...
- 22.2k
1
vote
2
answers
37
views
What Policy does the Liana wallet use? Why would I use this Policy?
I was looking at Wizardsardine's Liana wallet repo (beta software).
What is the Policy and associated Miniscript that is used by this wallet?
Why would I use this Policy? What is fixed and what is ...
- 4,852
1
vote
2
answers
72
views
Review of multisig funds protection strategy
I want to protect my bitcoin and my threat model is that one of the two paper copies of the seed is accessed to recover the wallet and steal the funds. To mitigate this risk I am contemplating the ...
CommunityBot
- 1
0
votes
1
answer
501
views
Understanding the iquidus API settings
I am trying to understand what values I am being asked for in the settings.json to install the block explorer for Iquidus. I know how to get the genesis block as I have hard coded it when I did a fork ...
CommunityBot
- 1
0
votes
1
answer
441
views
Manage multiple users wallets for web wallet service
This already summaries the issue I'm currently trying to figure out to calculate the transaction fee to prevent negative balance.
(testnet) I tried using createrawtransaction answered.
When I tried ...
CommunityBot
- 1
0
votes
1
answer
197
views
Bitcoins and transactions missing
I had a wallet which had approx $660 worth of bitcoin somewhere around 0.05 BTC and all of a sudden it has vanished and my transaction tab shows nothing.
I have put my receiving address into the ...
CommunityBot
- 1
3
votes
1
answer
222
views
Risk to Bitcoin balance when making Bitcoin Gold transactions
If Bitcoin Gold fails to implement replay protection, will I risk losing my Bitcoin when I make a Bitcoin Gold transaction?
Assuming replay protection is not implemented properly, how can I protect ...
CommunityBot
- 1
0
votes
1
answer
31
views
Early version of bitcoin and poker
How can we locate the code for an online poker game in version 0.1.0 of Bitcoin, which multiple articles on the internet claim was included by Satoshi Nakamoto? Furthermore, how can we verify that ...
- 22.2k
2
votes
2
answers
107
views
Curious about the Math that makes Bitcoin/Blockchain work ! Any good resources to learn it?
A bit of a background about me ; Computer Engineer but during my studies i didn't dive too deep into the maths , especially the maths that makes the blockchain and cryptography work
looking for advice ...
CommunityBot
- 1
4
votes
3
answers
90
views
How to gpg verify my bitcoin core download step by step on ubuntu server?
I am a newbie when it comes to setting up a bitcoin node but I am trying to gpg verify my bitcoin core download the pub keys to do so are no longer available. I have tried doing my own research but I ...
- 4,852
0
votes
0
answers
33
views
Blockchain.com holding all my funds [closed]
On Feb 23 2023 I recived an email from blockchain.com telling me my verification was unsuccessful and would be contacted in a few weeks. I have been a verified user for almost 10 years. I have been in ...
- 1
0
votes
1
answer
60
views
Is it possible to forward signed transaction using bitcoind prune mode?
Summary:
Is it possible to perform createrawtranscation , signrawtransaction and sendrawtransaction rpc call using bitcoin in prune mode?
Detail :
I want to implement an API that performs p2p BTC ...
CommunityBot
- 1
0
votes
2
answers
156
views
How can I calculate the correct fees for a blockchain transaction?
How can I calculate the correct fees for a blockchain transaction? I use https://bitcoinfees.earn.com/api/v1/fees/recommended. I got hourfee - 88. How can i calculate bytes of transaction?
CommunityBot
- 1
1
vote
3
answers
2k
views
Moving the Umbrel Bitcoin database to a new drive
I installed Umbrel on an old PC. I got ahead of myself and did it before I got a new hard drive. My internal hard drive isn't big enough to hold the entire blockchain. I got a new 2Tb external drive, ...
- 101