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
18 views

How does miner order transactions?

I understand that miners can do whatever they are pleased to do. Either include 0 transaction or 1000 transactions in the block before mining. But I assume majority of the nodes run the same set of ...
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0answers
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bitcoin core update 22.00

I am trying to update bitcoincore. I got this message: sudo install -m 0755 -o root -g root -t /usr/local/bin bitcoin-22.0/bin/* install: omitting directory bitcoin-22.0/bin/* My bitcoin-22.0 folder ...
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1answer
27 views

Internals of bitcoin block replication workflow from wallet, and conflict resolution

If I initiate a transaction from my wallet, does my transaction go to only one node? Does wallet client send to multiple nodes? What happens if no miner decides to include my transaction? Would my ...
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1answer
38 views

When exactly does Bitcoin transaction batch happen?

I need some help understanding the Bitcoin internal... The basic idea is: The miner assembles N transactions into a block (rather than creating a consensus for every single transaction). And hash ...
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1answer
2k views

Blockchain.info, does recovery phrase recover all wallets?

I need some help understanding blockchain.info. 1. Under the Default wallet, I can generate multiple addresses and also see the Extended Public Key (xPub). If I go to the iancoleman BIP39 mnemonic ...
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1answer
65 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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2answers
14k views

Should you protect your Bitcoin address like your credit card number?

Today, I recieved this scam email: We have reached the biggest milestone in our history – over a million wallets. https://[removed] will celebrate with some big prizes. In October 2013, ...
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1answer
103 views

Clients without Isstandard() function

Are there any bitcoin clients without the Isstandard () function which would allow non standard transactions to be broadcast?
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1answer
37 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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1answer
274 views

Where can I find the core binaries for v.0.1.5 to v.0.3.21?

I have been looking for core binaries (i.e. win32-setup.exe & win32.zip & macosx.zip) for earlier clients. Any advice on where they are hosted? They have all been removed from SourceForge. ...
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1answer
2k views

Configuring GPU mining with CGminer

I know GPU mining is looked down upon, but I cant afford an ASIC. SO I would like to know how to mine Bitcoin with CGminer using my gpu. Any help would be appreciated. I already am connected to a ...
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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 ...
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2answers
452 views

Is the any workable testnet3 Bitcoin solution for creating, signing, broadcast a normal transaction using Golang?

Currently I'm trying to create, sign & broadcast bitcoin transaction using btcsuite. For start, I've already had testnet3 address & its associated privatekey for testing. However, hunting ...
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9answers
3k views

Can I send bitcoins with my mobile phone?

Is it possible to send and receive bitcoins with a mobile phone? If so, are there bitcoin clients for Android or iOS?
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1answer
1k views

Transactions confirmed on Blockchain but nothing received to my Blockchain wallet

I need some info/help. I have sent some Bitcoins to my Blockchain wallet. They have all be confirmed and done with. But it has been 2 days now and nothing has shown on my wallet. This is the ...
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1answer
2k views

Can't connect to Bitcoind remotely

I am running a Bitcoin Cash node on my server, and starting it like this: start bitcoind.exe --server=1 --rpcuser=user --rpcpassword=password --rest=1 --rpcport=8332 --datadir=F:\Bitcoin --bind=10.1....
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1answer
211 views

I have a old version of Bitcoin QT on Apple

Which I think is about 3 years plus old but it was on my old computer which died. I have now recovered the drive at the bitcoin-qt application but it won't run on my current computer either due to the ...
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1answer
82 views

How do different implementations of the Bitcoin Cash client know which type of coin they're processing?

TL;DR: Where in this code does the SV client figure out that it's not processing an ABC blockchain? This image prompted my question. There are a couple different mutually incompatible (I am assuming ...
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1answer
177 views

Bitcore-wallet-client "Server response could not be verified"

I'm getting an error trying to sign a transaction with bitcore-wallet-client. I create the transaction, publish it and when I try to sign it, I'm getting the error: "SERVER_COMPROMISED - Server ...
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2answers
41 views

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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1answer
651 views

Bitcoin curl no reply

Hi I have made a curl to my server but get no reply . What am a missing rpcuser=rpcusername rpcpassword=rpcpassword rpcauth=rpcusername:generatedkey daemon=1 server=1 rpcport=8332 rpcbind=0.0.0....
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1answer
150 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 ...
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1answer
54 views

the client's 'invalidateblock' debugging command - possible prevention against majority attack?

there is a 'invalidateblock' debugging command in the btc client. How can this command be used in a situation of majority attack threat and play a part of countering the attack? I understand that ...
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0answers
19 views

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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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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2answers
2k views

Send or receive bitcoins with bitcoin-cli without downloading full blockchain

I have successfully downloaded, compiled and installed bitcoin-cli from github. I can send or receive bitcoins with sendtoaddress and getnewaddress methods. It works great and i am happy to do that ...
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1answer
48 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
2k views

Bitcoind daemon: error connecting to the server?

I am trying to create a new bitcoin address and store it in a shell variable $NEW_ADDRESS. When I run this command: $NEW_ADDRESS=$(./bitcoin-cli getnewaddress) I get the following errors: error: ...
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0answers
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 ...
2
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1answer
105 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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0answers
26 views

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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1answer
230 views

How do I get Raw Transaction Txid, Scriptpubkey Using Bitcoin Core Console

I just finished downloading bitcoin core on windows 7 and I am trying to create a raw transaction. When I typed listunspent 0 or listunspent 1 on console, I got no message (empty message) in the ...
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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
139 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 ...
3
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1answer
5k views

Sending bitcoins to same address

I am using the BitcoinJ API to create my wallet. When I create a transaction, I provide the change address to which change should be sent. For example: let there be 1 bitcoin at address A; then I ...
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1answer
54 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 ...
2
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2answers
79 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 ...
19
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4answers
22k views

How can I setup Bitcoin to be anonymous with Tor?

Bitcoin is billed as many things, among them its anonymity is highly regarded. While it is true that a transaction does not identify a user or wallet, recent news shows that there is the potential for ...
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1answer
35 views

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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3answers
2k views

bitcoin.rpc python library problem

I am working through Master Bitcoin. I got the bitcoin client up and running. I am now trying to access the client from python. In the example, there is a line that says from bitcoin.rpc import ...
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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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0answers
33 views

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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0answers
15 views

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 ...
21
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8answers
3k views

What wallet / e-wallet is the most convenient for new casual Bitcoin users?

I'd like to make small payments for business purposes through Bitcoin, so would like to know what the easiest method of getting setup to accept a Bitcoin payment is for a regular person, so that I can ...
15
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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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1answer
344 views

"Needed Turnover" / "Missing Turnover" - How to get my money out?

Contact Information: contact@securitycrypto.info General information support: info@securitycrypto.info Support and online transaction search with full and detailed information: support@securitycrypto....
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0answers
64 views

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
52 views

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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2answers
20k views

How can I create a new wallet on Bitcoin Core?

How can I create a new wallet on Bitcoin Core (Bitcoin QT)? I forgot my old password, so I can't create transactions using the old wallet. I don't have money on my old wallet, I just need to create ...
1
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1answer
349 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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