All Questions

0
votes
0answers
5 views

Is there a way for me observe network traffic of bitcoin exchange?

I was wondering if there is a way to observe a network traffic/packet of bitcoin exchange. I want to know what's in the packet when I send a bitcoin from one wallet to another. Thanks.
0
votes
0answers
3 views

My transaction has been on pending for 48hrs

Please I need help and I need to know how long it will stay and I don't change my transaction fee
0
votes
1answer
5 views

Export Xpubkey from Bitcoin Core

How do I export my HD wallet's Xpubkey in Bitcoin Core? Do I construct it using the value of "hdseedid" returned by getwalletinfo?
1
vote
0answers
19 views

Is the bits field a unique representation of the target?

The bits field is the compact representation of the target. Example: bits: 1d00ffff target: 00ffff0000000000000000000000000000000000000000000000000000 bits: 1cfff00 target: ...
0
votes
1answer
20 views

How does the 51 percent or 2/3 majority voting rule work?

For a block to be added to the chain, it needs vote from majority of miners, is that correct? If yes, does that mean a single block gets worked upon by all of the miners?
0
votes
1answer
28 views

Hi can someone help me with this btc transaction?

https://www.blockchain.com/btc/address/17GNYZZ9y1Woyv5JdqLcAEJeYaQyRDTx2D it is not showing up in the bitcoin account it should be in????? Blockchain and electrum as my personal wallets, but this ...
0
votes
0answers
6 views

Which derivation paths are used by the Abra wallet?

Abra have stated in a reddit comment that their non-custodial HD wallet uses custom derivation paths to convert the user's BIP39 mnemonic seed into cryptocurrency address/key pairs. Has anyone figured ...
-4
votes
0answers
39 views

Fake btc transaction [on hold]

Is it possible to make a false btc transaction, with a false tx and without using funds?
0
votes
1answer
13 views

How does Internal Keychain exactly work?

I understand that an internal keychain is used to receive a change of payment when I pay someone. For example, I pay $20, but it costs $17, so I get $3. But what I don't understand is how can there ...
0
votes
0answers
13 views

how to implement stack data structure using haskell? [on hold]

i won't perform stuck function like this (push, pop) using Haskell that are special for functional programming
0
votes
1answer
14 views

Question about nondeterministic wallet

I was reading https://github.com/bitcoinbook/bitcoinbook/blob/develop/ch05.asciidoc#user-stories and ran into this statement. In the first bitcoin wallet (now called Bitcoin Core), wallets were ...
0
votes
2answers
29 views

Is the time taken for the verification of a transcation not much relevant?

By verification I do not mean the puzzle solving/hash calculating part but the part involving searching all of the blocks to check if the transaction is valid or not? For example if A transferred ...
0
votes
0answers
19 views

My transaction has been on pending for 27hrs [duplicate]

I need to know how to confirm my transaction it's been on pending for a while and I really need the transaction
-2
votes
0answers
28 views

Enigma “secret contract” and concealing transactions history: Is it possible?

Enigma protocol is a second-layer, off-chain network that aims to solve privacy issues in blockchain. However In Enigma blog, there is an article (Link to Article), explaining the secret contract, ...
0
votes
0answers
13 views

How do I include mining in this alternative Blockchain application of mine?

I am making a blockchain based messaging application. How it works is like this: there is a server side program and a client side program. The clients are the nodes which have a Public and Private Key ...
1
vote
2answers
29 views

how to transmit commitment transaction (unilateral close) from lightning network channel

How would you transmit a commitment transaction from a lightning network channel instead of closing the channel? I am working on implementing a watchtower and I first need to simulate a double spend ...
0
votes
1answer
37 views

Can someone explain what exactly is derived address?

Let's say my mnemonic words are army van defense carry jealous true garbage claim echo media make crunch When I used https://iancoleman.io/bip39/#english, the section, Derived Address, showed ...
0
votes
0answers
12 views

LND application for InitWallet [on hold]

who can help me fix below issue on LND function(based on PyCharm)? the problems on the InitWallet from LND Application. GenSeed that can run pass and get the response from below resource code. but ...
0
votes
0answers
16 views

how to run a query for size of tranactions?

how do I run a query for size of transactions in terms of size of bitcoin? Or better yet, is there a key for all the output?
0
votes
1answer
25 views

What can I do with Account Extended Private Key and Account Extended Public Key?

I have been reading about Account Extended Private Key and Account Extended Public Key that derives from the Master Private Key and Master Public Key, but I still have some question about their ...
0
votes
1answer
29 views

I formated my hard drive with bitcoin core on it

First timer here ...I downloaded bitcoin core a few weeks ago until last week where it still had not synced so i started all over...I was originally waiting for BTC CORE to synchronize(I missed the ...
1
vote
1answer
34 views

Script Null into raw trasaction bitcoin core

I'm developing a parser for bitcoin core and into the alpha test of the parser,I noticed than the script bitcoin core are null and the hash raw transaction exist. An example: for this transaction the ...
2
votes
2answers
47 views

Why is the value field 8 bytes in transaction output when it can be achieved with 7 bytes?

Bitcoin uses a 8 bytes value field in the transaction output. However, the total supply of bitcoin is capped at 21M. Theoretically, even if all the 21M bitcoins are transferred to a single address, ...
0
votes
1answer
15 views

What are the web3py equivalent for communicating with bitcoin in Python?

I am fairly new to working with Python, I have a requirement where I need to perform some basic bitcoin operations on my local system rather than relying on some external API's, those function mainly ...
0
votes
2answers
52 views

Checking if a receiver has enough coins

How do miners verify the blockchain transaction history to check if the sender has enough money if the address can be changed at any time?
3
votes
2answers
523 views

How was the dust limit of 546 satoshis was chosen? Why not 550 satoshis?

Is there a reason why 546 satoshis was chosen as dust limit instead of 547 or even 550 satoshis, historically?
0
votes
0answers
11 views

HashRate After 24 hours reduce

I Have two whatsminner m3x , when I start mining hashRate be 12 , after 24 hours hash rate be between 2 and 3 , and I don't know why?? what I must to do? , my device connect to Slushpool
1
vote
1answer
23 views

Create multisignature wallet from xpub keys in bitcoin core

I can create Multisignature wallet electrum with 2 xpub keys. How can I create bitcoin core to do that? Standart use; Add a multisig address from 2 addresses bitcoin-cli addmultisigaddress 2 "[\"...
1
vote
1answer
30 views

How chaining the blocks protect against altering data?

I am confused with the block chaining, as i know a block header contains a reference to the previous block header hash with the merkle root and other fields. This header hash is related (computed) to ...
1
vote
1answer
366 views

If the nonce is 32 bits why the proof of it is difficult?

I want to know why mining of nonce is difficult? The nonce is 32 bits (4294967296) and a high level Nvidia graphic card can check and mine it in a second. why do we need a pool to mine a blockchain?...
0
votes
1answer
47 views

Question about Python library coincurve/libsecp256k

I am a noob with cryptography, just trying to learn using python and the library Coincurve ( https://github.com/ofek/coincurve ) which is a mature Python binding for libsecp256k1. The following code ...
3
votes
2answers
23 views

Looking for whitepapers on pool-resistence mining

I have seen several cryptocurrencies list the feature of decentralization of mining through ASIC-resistance and pool-resistance. However, I have not yet found any whitepapers which explain how the ...
0
votes
0answers
10 views

Listaccount CLI command shows balance, but getbalance shows different balance

I was sending some coins to myself using sendtoaddress, through the address I created using ./someBTCfork-cli getnewaddress When I run ./someBTCfork-cli getbalance "" My balance is 4999 When I ...
0
votes
1answer
28 views

any faucet that can give even 1 satoshi of BTC immediately?

Is there any faucet that can give even 1 satoshi of BTC immediately without waiting til you have some amount, and without faucethub account?
0
votes
0answers
22 views

Is 10K full nodes enough to bitcoin to avoid 51% attack?

As I know bitcoin has about 10K full nodes. And the question is in my mind is that: This number is not huge! If someone has 6K servers, Can control the bitcoin via 51% attack? I was thinking if ...
4
votes
1answer
30 views

Can bitcoin core verify a third party blockchain download?

If you were to obtain a copy of the bitcoin blockchain, i.e. a copy of someone's data dir excluding his wallet files on a removable drive or other storage medium, could bitcoin core verify that or not?...
0
votes
0answers
8 views

compare bitcoin prices at different exchanges in one chart

Im having a hard time finding an online place where i can see the prices of bitcoin (or other coins) - from different exchanges. I mention i want a chart. And the ability to look into historic data. ...
1
vote
0answers
35 views

18 word mnemonic seed that contains words outside of BIP39 wordlist, struggling to recover BTC

I recently recovered a document containing information relating to some BTC I purchased in 2015. I only have: a passphrase/password, an 18 word mnemonic phrase(the majority of which are not in the ...
0
votes
1answer
21 views

Script to import multiple priv keys in Electrum

DuckDuckGo turns up nothing of interest. How to import multiple priv keys in Electrum from a file using Electrum console or shell script, for all derivable valid BTC addresses? (1,3,bc1) Eventually I ...
-3
votes
0answers
15 views

Segwit wallet address [on hold]

I need a Segwit2x wallet to receive some funds and then send to bank, it's the only way I can get the money.Can anyone advise how to do this please? Thanks
1
vote
0answers
19 views

Error mandatory-script-verify-flag-failed (Signature is found in scriptCode)

I found a few questions with the specific error, but couldn't find also the appropriate answer. So, here I am. I am working on regtest in a Python library that create transactions and then use JSON-...
0
votes
0answers
11 views

Multiple order execution at crypto exchanges

I am trading on crypto exchanges quite actively with quite a few strategies. In my "system" I get the data from exchanges, then I process it, then I create order and I send it to the exchanges. ...
0
votes
0answers
15 views

How to keep node mining automatically in qt wallet or console wallet

In the qt wallet, manually need to start the mining process in wallet console by giving generate nblock. so is there any other command or solution to automatically mine the block and how to confirm ...
0
votes
2answers
23 views

Hosting lightning node and non-custodial

In Bitcoin we can have a light wallet where we are connected to a full node, by doing this, we have to trust that the full node is feeding correct information, but at least we can store our keys in ...
1
vote
0answers
11 views

Does Bitcoin security rely on the assumption of nearly continuous transactions? [duplicate]

So for an attacker not to overcome good nodes, I believe we rely on the fact that blocks are always being produced, making the attacker essentially outpaced. But in the extreme and ridiculously ...
2
votes
0answers
20 views

How the process “ lock a certain amount of coins into the network as their stake” achieved technically in the Proof of stake algorithm

i am trying to understand deeper the proof of stake algorithm. i think i understand the basics but i am struggling to understand how this achieved thoroughly under blockchain network and how the nodes ...
3
votes
2answers
43 views

Is the transaction pool global or local?

I can't find anything in the web about that topic. Do all the miners have one global pool filled with transactions, i. e. Miner 1 takes Transaction 1 into his candidate block, so Transaction 1 won't ...
1
vote
1answer
26 views

Create a transaction spendable in a specific block height

I am new in Bitcoin and I try to create an address in Bitcoind and send a transaction that the amount will be spendable in a specific height of the blockchain. Here is what I have done: privateKey = ...
0
votes
0answers
7 views

Move a Bitcoin full node running on Raspberry-Pi3 from the current microSD to another microSD

I have a fully syncronized full node with TOR The blockchain is stored on an external hard disk. The operative system is a Raspian What I have to do to move it to another microSD with operative ...
0
votes
0answers
10 views

Apply SSL for RPC port -Ubuntu 18.04 VPS server

I start bitcoind 0.17 in a particular port on Ubuntu 18.04 VPS server. I want to give the SSL certificate for RPC port. I already know to generate self signed certificate using OpenSSL. But I don't ...

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