Questions tagged [client]

This tag should be used for questions regarding Bitcoin clients. A client is any application which allows a user to connect to the Bitcoin (or alternate) network. Alternately, "client" may refer to a non-standard user interface which interacts with the Bitcoin network through a standard client.

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1answer
26 views

How to develop bitcoin sidechains/second layer solutions?

If I have an idea for a use case that requires transparency and ultra-secure final settlement, how do I go about programming this to be a side chain/2nd layer solution on the bitcoin network? Is there ...
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How can blockchain prevent bad transaction script [duplicate]

Novice here trying to understand blockchain and transactions. I was reading about the scripts to verify the ownership of UTXO and understand that, this script actually can be client-defined. What if a ...
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Is there a way to list Unspent transactions for a BTC address that is not part of the Wallet, without importing the address to Wallet [duplicate]

Is there a way to list Unspent transactions for a BTC address that is not part of the Wallet, without importing the address to Wallet. I am looking for a rpc function similar to listunspent which is ...
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58 views

Triying to help grandpa recover his bitcoins [duplicate]

Back in 2013 my grandfather bought BTC. Wallet.dat file was lost most likely due to pc formatting. He would like to recover his wallet or bitcoins or whatever is possible I don't understand much about ...
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1answer
88 views

Bitcoin HD Wallet using C#

What packages do I need to use for creating Bitcoin HD Wallet in C# using BIP44? How can I connect to a remote Bitcoin Node to read all the deposit transactions received by various child addresses in ...
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I am working on a Bitcoin HD Wallet implementation in C#, Trying to build a HD Wallet offline for subscribed users following BIP44

I am working on a Bitcoin HD Wallet implementation in C#, Trying to build a HD Wallet offline for subscribed users following BIP44. Is there a way use a remote node for looking at the Received ...
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2answers
75 views

Is it possible to capture network events without going full-node?

You might find my question rather quixotic or nonsense. But I have to ask it here. I want to capture all the transactions propagated over the main network and detect if a new block mined. I don't want ...
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1answer
128 views

Money sent to wallet was removed in unexpected second transaction 30 minutes later

I got sent bitcoins to my cake address then the coins went into the account as unconfirmed for about half an hour then they were sent to another address, and the confirmations have finished and i dont ...
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1answer
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Wallet's dollar value of transaction is WILDLY off my actual dollar payment

I was using Safepal Wallet and moved my funds to Trust Wallet. I am currently tracking those original transactions for tax purposes next year. I was simply using hash/txid provided in the transaction ...
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1answer
56 views

What does a wallet do?

what are the actual requirements for a bitcoin transaction? Not the simple inputs, outputs, verification or amounts, but in the technical sense. what does your wallet do? every thing I read says you ...
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1answer
31 views

Finding my Bitcoin [duplicate]

Around 20 years ago I was watching ad and playing online short games and they mining me Bitcoin. Now I have the email address but I couldn't find any email regarding that. In my inbox only shows the ...
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How can i locate my deceased husbands bitcoin? [duplicate]

My husband passed away 4 years ago and he bought a lot of shares in bitcoin when it first became a thing. How can i find out who he purchased these through in order to accuquire about his shares?
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How can i know which utxo in my wallet will be sent? [duplicate]

Assuming that i have several utxos in my wallet. Can i know which utxos will be sent when i request a transaction? For example, there are 3 utxos in my wallet: 3 BTC, 5 BTC, 7 BTC. when i send 1 BTC ...
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Stratum: How many shares should I submit per job?

I'm implementing a bitcoin CPU miner just for fun in python. I've been reading a lot about bitcoin and the protocol pools use for communication and coordinating workers but there is a key concept I ...
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1answer
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I just need some advice or assistance if possible? I'd really appreciate anyones 2cents on this

I sent BTC from Paxful to an exchange called LAtoken. $36 worth of BTC was sent, nothing major to anyone else but really huge to me. Cope pasted and confirmed address. NO btc arrived almost a day ...
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1answer
318 views

What is a correct extranonce2 value in the stratum protocol?

I'm developing a stratum mining client. I read on stratum v1 docs on braiins.com how mining work is done on the stratum protocol and that the coinbase is done by concatenating coinb1+extranonce1+...
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1answer
155 views

Send and Received BITCOIN

I have been working on Ethereum for years. Now assigned to work on Bitcoin. The way that BTC handle transaction is vastly different and utterly complicated. After reading for quite sometime. Can I ...
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26 views

wallet not working [duplicate]

an old hard drive use on a new computer, not working but providing code EXCEPTION: N5boost12interprocess22interprocess_exceptionE The system cannot find the file specified. F:/Wallets/Bitcoin/bitcoin-...
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0answers
41 views

clients that support the Lightning Network? [duplicate]

Which clients, besides Electrum, support the Lightning Network?
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1answer
45 views

Bitcoin first versions

Please excuse my ignorance. I think I purchased some bitcoin quite some time ago within the early adoption phase, back then I think passphrases were non existent, Is there a way to access the old ...
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1answer
48 views

Why doesn't Bitcoin use a DHT to store its blockchain?

Why doesn't Bitcoin store its blockchain in a DHT, but instead makes each (full) node store the entire blockchain? related questions: "Why doesn't Bitcoin use a DHT for choosing peers?" and &...
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1answer
66 views

Bitcoin on old version of Bitcoin

I have Bitcoin on an old version on the Bitcoin app; more specifically Bitcoin.org version 0.3.22. I tried to transfer the Coins to a newer wallet, but they don't go through. has anyone had or worked ...
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1answer
74 views

Quantifying the long term costs associated with self hosting the Bitcoin node?

In this question I discussed the option of self hosting the Bitcoin node vs. using 3rd party services with API access. I quoted a colleague who said that "for every coin we wish to support, we ...
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1answer
204 views

Found old 'key' to bitcoin wallet but don't know which wallet?

I was searching through my email today and I think I found a bitcoin private key from 2013. I think it's a BTC private key because I bought 1 BTC that day. It's 33 letters long but I don't know the ...
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2answers
444 views

Pros & Cons of Self Hosting Bitcoin Node vs using a 3rd Party Service?

We are a medium size company building a blockchain application that requires us to interact with the Bitcoin blockchain (+ several other cryptocurrencies). One option is for us to use a 3rd party ...
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2answers
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Multiple outputs and different amounts on blockchain explorer when I sent BTC from Crypto.com to Coinbase

So I sent BTC from my Crypto.com wallet to my Coinbase wallet. I then went on the blockchain explorer to view the transaction and I am seeing an input that is not my address and various outputs which ...
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1answer
250 views

Can a customized or non-bitcoin node be made to talk to a bitcoin node?

Is it possible to create a node with some different code from the bitcoin nodes but still able to talk to the bitcoin nodes? Is it possible for someone to customize their own node to add some ...
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17 views

How to upgrade the current installed Bitcoin Core on Ubuntu to the latest version (0.21 v) [duplicate]

Just wondering how can I securely upgrade the current version of my Bitcoin Core to the latest released version without losing any data. It is all installed on a Ubuntu VM. The instructions I found ...
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1answer
53 views

Connect to custom bitcoind

I have a fully synchronized btc node on my network. Which mobile apps (android) and desktop apps can I use to connect to this node without running a full node/ daemon on the desktop or mobile? And how ...
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3answers
3k views

Is bitcoin.org or bitcoincore.org the one to trust?

"Download Bitcoin Core": https://bitcoin.org/en/download "Download Bitcoin Core": https://bitcoincore.org/en/download/ I've been alternating between the two sites for years. I have ...
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67 views

Single API to Get Fee Estimates for All Major Cryptocurrencies? [closed]

Many sites provide estimates of miner/gas fees for individual cryptocurrencies. For example, EtherScan provides gas estimates for ETH. BTC Network provides fee estimates for Bitcoin. Both of these ...
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56 views

How to 'move' Armory Wallet with multiple Private Keys to Exodus desktop wallet?

What if the Armory Wallet you are using has 3 separate PrivBase58 keys? How would you import this (move it) into Exodus Desktop? Exodus seems to want one key only when you select the move option from ...
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1answer
830 views

Mining Pool hub support cpu miner?

I have a simple/old CPU (like dual-core/Quad-Core) with unlimited electricity and all the other stuff. I would like to run 10 PCs with CPU mining. It's better to mine solo or the join mining pool hub? ...
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1answer
55 views

How is BIP 158 wallet rescanning supposed to work with xpub keys?

A light client implementing BIP158 downloads filters and checks its addresses against that filter. If one matches, it downloads the block. Now, let's say we have an HD wallet (BIP32), and/or an xpub ...
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3answers
2k views

Strategies to Reduce High Transaction Fees in a Cryptocurrency Marketplace?

I’m building a cryptocurrency marketplace where users mainly buy and sell small ticket items (worth $10 - $50) using cryptocurrency. However, the "miner fees" are making it prohibitively ...
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45 views

dumpwallet lists HD keys in seemingly random order

I was curious when you do a dumpwallet in the default bitcoin client the output file gives you an xprv and then followed by WIF keys, corresponding address, and the hdkeypath. I noticed the order of ...
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20 views

Is Smell Bit safe? [duplicate]

I was wondering if this website https://smellbit.com/ is safe to use. I've tried searching it up and got nothing. Thanks!
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2answers
63 views

Finding the current statements about bitcoin [closed]

Which of the following statements about blockchain are correct? A) A transaction is accepted once it is included in some block. B) A transaction is accepted once it is included in a block that is at ...
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0answers
21 views

bitcore RPC Client

How can I use bitcore JS libraries to connect to a full node bitcoin core which is installed and run locally for wallet and transaction management. I think it is through bitcore RPC client. Appreciate ...
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1answer
54 views

What happens to the bitcoin mining if the device changes? [closed]

First I've opened this site via mobile and registered with a Google account. Some time later, I continued to mine bitcoin through my laptop with the same account. Will this device change make it ...
2
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1answer
322 views

How to convert PSBT transaction (base64) to raw/serialized (hex) transaction?

Bitcoin Core's CLI has a converttopsbt command used to convert from raw transaction to PSBT transaction but how is it possible to convert from PSBT transaction to raw transaction using Bitcoin Core (...
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0answers
43 views

I am new to Bitcoin. Am I being scammed? [duplicate]

I am new to Bitcoin. I got into transaction with this woman I saw on Facebook, Olivia Jessica, a lot were mentioning her in a group so I decided to ask her how to do this thing. She asked me to join ...
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1answer
76 views

How to resolve eclair-node-gui-0.3.3-12ac145.jar getting CAPSULE EXCEPTION after java update to version 11.0.9.1?

I've been running Eclair node release eclair-node-gui-0.3.3-12ac145.jar smoothly for some time now on Ubuntu 18.04.5 LTS, but recently had an update to the java version i was using to the latest (?) ...
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2answers
174 views

Bitcoin Core for ARM-based Macs?

Should we expect in the foreseeable future a Bitcoin Core release optimised for ARM-based Macs?
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1answer
62 views

how does merkle root building work for empty array?

It's known that even if no transactions get created, bitcoin still creates a block with empty array of transactions. In this way, I am curious what the merkle root would be. How does bitcoin figure ...
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1answer
65 views

What RBF policy will be default on SegWit v1 nodes?

What RBF node policy will be applied by default in order for a SegWit v1 transaction to relay when encountered. Full RBF, or Opt-in RBF?
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1answer
47 views

bitcoincore connect

I have a problem with bitcoin node is that when I want to get out of the full node bitcoin server. I ran this method and it does not work curl \ --user myusername \ --data-binary '{"jsonrpc&...
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1answer
64 views

How does a node send a chain?

I understand that in selfish mining a malicious node can "send its entire hidden chain". Exactly how is this done? I know that usually a single block is broadcast-ed right after it is mined, ...
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1answer
42 views

NBitcoin Transaction sign(secret, bool) is giving error. Instead of bool it says to pass Coin Object

I am using NBitcoin (I'm new to it) to sign a transaction. Here Transaction sign(secret, bool) method is giving error. (I've searched the Internet, but got no help.) Instead of bool it says to pass ...
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1answer
52 views

why is bitcoin-qt connecting to port 9051?

Running bitcoin-qt with default policy in the OUTPUT chain to DROP I see lots of packets from localhost to localhost with destination port 9051 being dropped. If I open that port the node syncs. I do ...

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