All Questions
30,243
questions
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18
views
How should I debug this error?about altcoin [closed]
I'm creating an altcoin.
I modified some parameters in chainparams.cpp and then when I recompile I get the error below, can anyone help me with that? How should I fix this error?
BTW,I have already ...
- 1
0
votes
1
answer
21
views
Where did my bitcoin go?
Wanted to combine bitcoin on coinbase with bitcoin in wallet. Think I did it wrong. Can’t remember exact steps but think I went on „swap“ for some reason. Thought I was transferring from coinbase to ...
- 1
0
votes
0
answers
20
views
Daylight Savings Time obsoleted my old 2FA device? (really wierd)
So, sometime this year, the USA stopped implementing daylight savings time, so that our time is not adjusted by 1 hour twice a year. I live on the east coast and have an encrypted android device that ...
0
votes
0
answers
19
views
I downloaded Bitcoin core, but it's Now Trying to download blockchain Again – how can I Make it recognise I have the blocks In existing data file
Windows 10, external 1TB HDD SDD
*I Accidentally clicked "reset options" becomes in Core, Within The settings menu
*In the data file, there are Still, blocks Downloaded From everyday of the ...
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2
votes
2
answers
289
views
Undefined opcodes in bitcoin core defined as "Synonyms for OP_RETURN" in rust-bitcoin
In rust-bitcoin, opcodes past the 0xba opcode are named as such: OP_RETURN_187, OP_RETURN_188, ..., OP_RETURN_254. Their description is all the same: Synonym for OP_RETURN. The definition for ...
1
vote
1
answer
28
views
Is it possible to mine bitcoin in a trustless way with a Pool?
Some context
As far as I understand there are two ways in which an individual (or a company) can mine Bitcoin:
Solo: if one has enough hashrate to secure a block often enough to pay for the ...
0
votes
1
answer
46
views
How to convert the results of point doubling (Rx1 and Ry1) to point addition (Rx2 and Ry2) without knowledge of (Qx, Qy) in secp256k1 elliptic curve
I'm working with the secp256k1 elliptic curve and have point doubling and point addition formulas for this curve. Given the following formulas:
Point Addition Formula in Python3:
s = (Qy - Gy) * pow(...
2
votes
1
answer
48
views
Getting Error while trying to decode psbt base64 to json using bitcoinjs/bip174 library
const base64PSBT = 'base_64';
// Decode the base64 PSBT to a Buffer
const psbtBuffer = Buffer.from(base64PSBT, 'base64');
// Parse the PSBT
const psbt = bip174.Psbt.fromBuffer(psbtBuffer);
// ...
0
votes
0
answers
28
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I want to know how can my bitcoins get stolen ? I gamble a bit now and then, and often i have to deposit/withdraw with crypto.. what are the risks? [closed]
how can my bitcoins get stolen 101
HOW EASY it is to get ROBBED?
WHAT are the biggest "risk/ways"
HOW can I keep my wallet SAFE?
Is WWW.COINBASE.COM safe?
Are BLOCKS users trying to enter ...
1
vote
1
answer
62
views
How to determine the transaction type using transaction hash?
Is there any way to identify the transaction type using the following data in Bitcoin blockchain:
InputCount
OutputCount
Transaction Version
Transaction Size
Transaction Weight
Transaction Lock Time
...
- 11
0
votes
0
answers
36
views
The only way to connect to peers is through a DGRAM unix socket?
I'm running an experimental setup. I have Ubuntu on my desktop computer with a USB hub connected and a 1TB ssd sata drive mounted to it at /mnt/d1
I'm using a second docker instance
dockerd -H unix:///...
- 466
0
votes
0
answers
31
views
bitcoin full node huge upload bandwidth
Have been running a full node for a couple of months now, using bitcoin core 25.0
Last time I was running a node was many years ago, so I a bit outdated...
I am wondering if upload stats are not a bit ...
- 1
1
vote
0
answers
26
views
Bitcoin Core resynching after updating from 0.19 to 25.0
Similar to this post after upgrading Bitcoin core from version 0.19 to 25, it is re-synching and ignoring the already synched blocks.
This is a quite a large version jump, there doesn't seem to be a ...
- 53
0
votes
1
answer
45
views
Public key factors - but what's next?
Let's say I found (I know, impossible) public key factors. What to do with them next to compute original private key for that public key?
- 141
0
votes
1
answer
48
views
what are the future projections for fees per byte in satoshis if BTC becomes the global settlement layer? [closed]
What are the future projections for fees per byte in satoshis if the BTC becomes the global settlement layer?
and is this number increasing over time as the block subsidies are decreasing and what are ...
- 109
-1
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0
answers
22
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Merged Mining - Can anyone describe how to use Dogecoin's createauxblock and submitauxblock for me? [closed]
I've been looking for a step by step guide on how to mine a merged Dogecoin block with these two commands. Can anyone help? I'm doing merged mining with Litecoin/Dogecoin.
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4
votes
1
answer
100
views
Is OP_CODESEPARATOR disabled in Bitcoin and if so why?
OP_CODESEPARATOR is used in the Bitcoin script language to mark the beginning of signature-checked data. However, the given operator never found its real practical use case. So, is the given operator ...
- 1,047
0
votes
0
answers
25
views
What does this diagram mean? [duplicate]
On this answer Steven Roose used the following diagram:
What this exactly means?
Here is my take:
In a shared UTXO of 4 participants (A, B, C and D), each will receive a redeem transaction that they ...
- 415
3
votes
1
answer
83
views
How does the unilateral exit process in Ark work?
It's been told here that the cost of a unilateral exit depends on the number of leaves of the shared vtxo tree, which determines the number of transactions one has to broadcast to complete the process....
- 31
4
votes
1
answer
131
views
Why are hashSequence and hashPrevouts computed separately?
When a Segwit transaction is signed, among the many hashes that are calculated to create the data that is going to be signed, the hash of the concatenated [input + index] is calculated (hashPrevouts) ...
- 107
3
votes
1
answer
128
views
How does Bitcoin Core help validate transactions?
I am very new to Bitcoin.
I recently learned that a full node can help validate a miner's work, so I downloaded the Bitcoin Core and decided to become a full node. How does this help validate a miner'...
0
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0
answers
35
views
bitcoin-cli getrawtransaction not working as expected?
So I'm trying to set up a full bitcoin node. I compiled bitcoin core fine and I created a config file. I want to download the entire history of the blockchain, so I created a bitcoin.conf file in my ./...
- 123
-1
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0
answers
21
views
Exchange crypto to Payoneer/perfect money [closed]
how can I exchange perfect money and Payoneer against Usdt/other crypto.if anyone know about it tell to how?
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3
votes
1
answer
111
views
How many recipients can fit in a single Ark shared output?
It's the only boundary the taproot/MAST limitation of 128 levels of the tree, ie. 2^128?
4
votes
1
answer
741
views
Why is each transaction broadcast twice in the Bitcoin network?
Here is a part of this mail in the mailing list from Satoshi:
The bandwidth might not be as prohibitive as you think. A typical
transaction would be about 400 bytes (ECC is nicely compact). Each
...
- 1,175
0
votes
0
answers
29
views
Which chain for developing a BTC based app? [duplicate]
There appear to be four chains you can use with bitcoin-cli. Main, test, signet, and regtest.
Main is off the list obviously but I'm not sure which other chain I should be using. I'll need to be able ...
- 111
0
votes
0
answers
23
views
Address "invalid" when sending from Coinbase wallet to Coinbase account [closed]
I’m having troubles at the moment to send BTC because it says the Coinbase account address to receive the bitcoin is invalid. I need an expert is a big amount and I can’t find a solution
1
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0
answers
26
views
Pending open lightning channel
I opened a lightning channel with RTL on my raspiblitz. It took too low fees by default (my fault).
So I tried in RTL to pump the TX but this doesn't help. It seems that there was an second TX created ...
- 111
0
votes
0
answers
34
views
Is there any free bitcoin full node api's? [closed]
For my purposes i need a specific full node implementation - bcoin(https://github.com/bcoin-org/bcoin) I've spoke with QuickNode support team about their node software and they told me that they no ...
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-1
votes
0
answers
38
views
Is it possible to create a Lightning Network smart contract for income distribution based on specific conditions?
Is it possible to set up a lightning wallet (contract) that implements the following scenario:
Person A creates a wallet with wallet nr A_WALLET_NR
Person A creates a wallet with wallet nr INVEST
...
- 109
-2
votes
0
answers
16
views
Kadir uygac port [duplicate]
this woman called me and made me open an account of bitcoin and made me buy 435 pound bitcoin so they told me I will have money then they are asking to put 9000 to bitcoin account for redrawing money ...
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3
votes
1
answer
125
views
How to identify a transaction input type?
I am currently working on a tool parsing every transaction of the bitcoin blockchain, using the getrawtransaction RPC call in verbose mode.
My goal is to store them all in a database, while keeping ...
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1
vote
0
answers
16
views
Address watcher with BDK/Rust
I'm trying to implement (multiple) address watcher in BDK/Rust.
I'm having trouble doing this for an arbitrary address, because BDK and rust-miniscript don't support "addr()" expressions in ...
- 111
2
votes
2
answers
661
views
Security risks in running a full node on my personal computer that I use for banking, work, etc
Let me start off by saying that my networking knowledge is fairly weak, so please bear with me.
I am reading the book "Mastering bitcoin" and it says that I should be running a node if I ...
- 123
0
votes
1
answer
64
views
How was this transaction validated?
I'm having trouble understanding how the following transaction was valided (Block 364845 July 2015) :
2c6c27639e79038cf446e795e267dc8abbe96d1f21cdd17518cc6b57ad2d86d9
It has one input, and is ...
- 107
0
votes
2
answers
78
views
What is the format of a Bitcoin block body?
To my understanding, the miners solve the nonce to get a valid block header based on the difficulty target. In the header, you have the Merkle root, which is generated from the transactions included ...
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2
votes
1
answer
63
views
How many transactions go on-chain if a user unilaterally exits from an Ark?
In Ark, if Alice decides to unilaterally exit will this means the entire tree must be revealed? How is congestion control handled?
- 415
4
votes
1
answer
176
views
How would the transaction chains created Ark pool transactions work given current mempool policy?
If I understood Ark correctly, pool transactions (which are on-chain transactions) are connected, as the output of pool transaction A is used as an input of the pool transaction A+1.
If so, how can ...
- 415
0
votes
0
answers
35
views
single mnemonic to create private key with different networks
I have both 12 and 24 words, but i can't remember which coin it has.
so shall i try all wallets to find out which has a coin or is there anything i can do practical?
with a 24 words can i create a ...
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7
votes
1
answer
135
views
Why are OP_MUL and OP_DIV disabled in Bitcoin?
What is the reason why OP_MUL and OP_DIV operators were removed from Bitcoin? Is this because someone could maliciously create a script that multiplies large numbers and thus blows the stack, or is ...
- 1,047
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1
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82
views
How can I tell from the `getrawtransaction` if a transaction signaled Taproot?
I'm trying to "distill" Taproot transactions in the raw transaction output, but:
It is still not clear to me what tx version number a Taproot transaction uses.
How to find out if it's a ...
- 71
0
votes
1
answer
32
views
Off chain transaction on exchange
Are cryptocurrency exchanges uses off chain transactions?And if yes when does they used?
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0
votes
0
answers
24
views
Is Clux Wallet Genuine? I am asked to add funds to my Clux Wallet in order tp generate a private key [duplicate]
I am new to crypto trading. My crypto trader refused to send the earnings to Binance or WazirX saying there are issues with these wallets on their side. And deposited my funds in a crypto wallet ...
0
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0
answers
60
views
Upgrading from 0.14 to 0.25. Problem with pszTimestamp, and assert(consensus.hashGenesisBlock error during runtime [closed]
I have a slightly modified fork of bitcoin-0.14. It's mostly a name change and hash key change. I have updated it to bitcoin-25, but I cannot get passed this error:
CMainParams::CMainParams(): ...
0
votes
0
answers
32
views
Bitwallet by sollico [closed]
https://bitwallet.maxitradeapex.space/ pls is this the customer support services of bitwallet by sollico? Or scammer
4
votes
2
answers
367
views
When does Bitcoin Core allow you to "Abandon transaction"?
Right-clicking on an unconfirmed transaction pops up a contextual menu that has the option "Abandon transaction". It is usually grayed out. How much time needs to pass for Bitcoin Core to ...
- 4,549
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votes
1
answer
70
views
Can two people generate the same exact wallet or seed phrase [duplicate]
Can 2 or more people generate the same exact wallet. And if so, what happens then?
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1
vote
1
answer
31
views
How should I be using rpcbind and rpcallowip (bitcoin.conf)
I have been very confused on how to use the rpcbind and rpcallowip arguments for bitcoind. I have a bitcoin core node running on a raspberrypi and I want it to accept json-rpc calls from one of my ...
- 15
0
votes
1
answer
81
views
How does a completely offline wallet "registers" and runs
A wallet which was made offline and will never ever see the internet how is it "registered" and runs in the blockchain. Is it through the watch-only wallet?
- 33
1
vote
1
answer
59
views
Why do I need to download the entire blockchain for a wallet when I can make one one with open source java like bitaddress.org
Like title said. And when i will have to use the btc I can login the wallet with the private key on a hot wallet.
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