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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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25 views

Mining in the wallet [duplicate]

Someone said me that I should give him my wallet email and then he will request for the mine from the mining network, after that he asked that you will receive email from that u will get code which u ...
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1answer
17 views

Why is there an addrlocal field in the output of the RPC call getPeerInfo, and how SPVs handle it?

According to the Bitcoin core developer reference, the RPC call getPeerInfo has in its output a field called "addrlocal" which holds our IP from the worldview of the peer. Why is this output there? ...
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1answer
19 views

Bitcoin built with a newer Berkeley Database incompatible with a older wallet?

Is a Bitcoin client built with a newer Berkeley Database incompatible with a wallet file from a older client? Or is it that a wallet made from a newer Berkeley Database not compatible with an older ...
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0answers
15 views

What are the common cases of disputes where buyer is found guilty in cryptocurrency trade?

I am working on dispute management of crytocurrency trade and I am new in this field. I want to know what are the cases where a buyer is found guilty in a cryptocurrency trade whether it is on ...
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0answers
27 views

Bcoin: Trouble With bitnodes Help!

Hi i got a trouble on my bcoin node and im very confused i followed the instruction on this page .http://bcoin.io/guides/install-linux.html. but when im going to verify my node in bitnodes it gives me ...
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0answers
17 views

Separating user accounts in a wallet for a large scale web app

I'm planning to implement a web platform that maintains user wallet accounts and generally acts as a web wallet. They can deposit, withdraw and transfer coins.The number of accounts should be in ...
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1answer
24 views

What applications of clients use bitcoin JSON-RPC?

As far as I understood, the Bitcoin JSON-RPC is one of the ways (if not the only way) in which applications can be built that can access the bitcoin wallet. So, the RPC server here gives that access ...
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1answer
23 views

How to add a signature to a transaction which I can broadcast

I am using ledger and multi sig to sign a transaction I got signature hash where both party signed the transaction. How can I attached this signature to the transaction so that I can broadcast it to ...
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2answers
20 views

How to differentiate between mining node and non mining node in bitcoin

I am trying to understand how does mining traffic looks from non mining ones? If I try to discover mining node I believe I can look for nodes which broadcast blocks. Is there someway to know which ...
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0answers
24 views

Best configuration to use for optimization of JSON-RPC calls?

I have been working with a bitcoin full node trying to implement a personal blockchain explorer using RPC API calls to populate an external database. The script I am using iterates through each block ...
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2answers
31 views

How to monitor balance for addresses other than by using importAddress?

Is there any way, other than importaddress, to watch balances of specific addresses? If not, how it is possible for wallets and explorers to give information (balance, transactions) about specific ...
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1answer
63 views

How to convert script hash to base58 address?

For example : take a look at this 37d1d453311ea5682cdb31468826178db15fa731722a5dbb09525ea901f1c41c scripthash. I need help converting it to base58 address. Thank you.
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1answer
35 views

How to extract addresses from input in raw transaction

I need help to get input addresses from "vin" in offline mode. I don't know how https://live.blockcypher.com/btc/decodetx/ is doing it. Example raw transaction: txn id : ...
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0answers
10 views

how do i change my bitcoin cleint application?

I recently downloaded the bitcoin (--testnet) blockchain data using Bitcore(I thought it was the Orginal client) for some development purpose. but now, I like to move to bitcoin core client. Should I ...
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2answers
33 views

address format is different from bitcoin core response from btcd

For now, I'm generating WIF and address using golang btcutil package programmatically. wif, err := btcutil.NewWIF(privateKey, conf, false) if err != nil { return nil, err } ...
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0answers
15 views

How to make sure importprivkey command worked after running

As title, I'd like to know how to make sure that importprivkey command worked after running. What is understandable way? Thanks in advance.
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1answer
27 views

Confirm transaction in regtest mode

I'm testing some wallet features on regtest. Here's the sequence so far: cash-cli -regtest generate 101 cash-cli -regtest getbalance 500.00000000 cash-cli -regtest getnewaddress newAddress1 ...
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1answer
35 views

Cryptocurrency: check if transaction is viable masternode output

I'm developing a tool for masternode automization similar to https://gincoin.io . I'm trying to figure out how to decode if transaction is viable for a masternode. From what I know the ...
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2answers
29 views

What is the main difference between “light/thin client” and “client” in sense of “functionality” and “capability”?

What is the main difference between "light/thin client" and "client" in sense of "functionality and capability" ? I mean, what can a client does that a light/thin client cannot ? (ex. sending ...
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0answers
22 views

What kind of micro processor / micro controller can run Blockchain light client?

Is there any kind of micro-processor / micro-controller that can run Blockchain light client? An example can be Samsung ARTIK: https://www.artik.io However, it's too big. Is there any other similar ...
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1answer
14 views

bitcoin transfer without creating wallet

My question is about transferring bitcoin between two addresses without having a wallet. Here is my idea of transferring bitcoins in following way: Idea: I have my own Android Application. I am ...
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3answers
52 views

If I invest £2,000 in bitcoin and the price goes down, can I lose more than my investment. Could i Have to sell my house to pay back the losses?

If I invest in Bitcoin is it possible to lose more than my initial investment ? In other words if the price goes down substantially, to well below that of when I initially invested; is it possible ...
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2answers
42 views

Specific explanation of “timeout” configuration option in Bitcoin

According to Running Bitcoin - Bitcoin Wiki, timeout is described as following: Specify connection timeout in milliseconds To my understanding it would mean that if a response was expected, if not ...
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0answers
40 views

Why is the Serialization limit set to 0x02000000?

In addition to the block size limit, there is a limit on the maximum message size. Is there a rationale behind the 32MB limit set in src/serialize.h or was it picked because it's just a nice round ...
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2answers
32 views

Could mining centralization be countered by checking if the node connects to many ASICs instead of one?

In a mining pool, many ASICs and GPU/CPU from all around the world connect to the pool's node. Is it possible to force every node's client software to check if a node is connected to just one ...
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1answer
26 views

Is there a Bitcoin wallet that has French language support?

Which Bitcoin app has a language option that can be changed from English to French? I have tried few applications but they seem to be no language option.
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0answers
12 views

Pycoin Transaction List sorted by date

I am using Pycoin and Python 3 and would like to retrieve Bitcoin transaction list sorted by date with Private or Public key. Code wise have not gone as far as been able to find anything in their ...
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1answer
27 views

Virus warning in Bitcoin [cash] ABC client?

I tried to download Bitcoin cash ABC wallet from bitcoincash official site. If I download zip to my computer and upload it to VirusTotal site, it says 11/62 positives. If I go to VirusTotal site and ...
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0answers
11 views

Open Source SPV client with sendTransaction functionality

Are there any open source SPV clients (ideally in C#) that have sendTransaction functionality? I am creating a C# mobile application to send bitcoins and receive bitcoins, but the application ...
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2answers
41 views

Do lightweight wallets validate signatures? If not, why?

I've learned that "some SPV clients simply don’t check signatures themselves at all": https://bitcoincore.org/en/2016/01/26/segwit-benefits/#efficiency-gains-when-not-verifying-signatures I wonder if ...
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1answer
40 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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1answer
72 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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0answers
41 views

Bitcoin testnet transaction getting dropped with prefix on S

So a weird thing is happening lately. The transaction of a particular format is being accepted by blockcypher but it is not getting confirmations, and therefore gets dropped after a day. So the ...
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2answers
65 views

Why choose the longest chain before checking for double-spending?

Can we make the following changes to the current POW protocol to better avoid double-spending: a) For full/mining nodes that receive two chains, check if there are identical addresses that occur on ...
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2answers
36 views

Blockchain validation process is linear?

I've read at a few places that the nodes validate transactions in a linear fashion, i.e. after node A validates, then node B, etc. (which is also the reason, as claimed by many, why blockchain suffers ...
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1answer
327 views

How to run BitcoinCash node?

How to install and Launch Bitcoin Cash daemon on machine? I have already synchronized full BitCoin node, Here is the link bitcoin.org from here i learn how to setup BTC node I also want to run ...
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1answer
39 views

Hardware-dependent block difficulty?

Is it possible to make block production difficulty not the same for every node, but automatically adjusting to the node's hardware speed? For example, node A and node B are both trying to solve for ...
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2answers
201 views

How to get Electrum 3.1.3 on bitcoin testnet?

I'm building an application on bitcoin and want to use testnet instead of using real bitcoins to do my test. I'm mainly using Electrum-3.1.3 to do sweeping of addresses. But how can I switch this to ...
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1answer
26 views

which indicates the correct total received bitcoins, blockchan.info or bitcoind [closed]

I'm trying to see how much bitcoins I've received via bitcoind's one method, getreceivedbyaddress specifying a certain address, and after knowing the amount of bitcoins, I soon realized that such as ...
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2answers
86 views

how to know if a webpage has mining code?

Until recently I have heard that lot of webpages are infected with the javascript which uses your computer's power to mine bitcoins. Whats the correct method to identify if the website i am browsing ...
2
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1answer
144 views

How to dump peers.dat file to a plain text file?

Is there a simple solution to dump [whole] peers.dat file to a text file? There are similar questions for example How do I read peers.dat file to get a list of all peers seen or that bitcoind has ...
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1answer
42 views

what happens if i sent bitcoin to a clubcoin address (address starts with a C)?

what happens if i sent bitcoin to a clubcoin address (address starts with a C)? will i get refunded and get notified the transaction was invalid? please help me!
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1answer
277 views

How can I use Bitcoin privately with the Electrum wallet and Tor?

I do not want to run a full node like Bitcoin Core but still want privacy running an SPV node like Electrum wallet to use Bitcoin. How can I setup to run Electrum privately with Tor?
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1answer
61 views

Will running a pruned node make my store less secure?

We run our own nodes to verify transactions for our store and I was wondering what will be the downsides to me running a pruned node? I read they can fully verify a transaction so I'm not too sure why ...
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0answers
81 views

Bitcoind installs wrong on OS X, zeromq does not work either

I want to test out zeromq and the rawtx feature on my computer (macOS Sierra) and I’ve downloaded and compiled both the sources for litecoind and bitcoind (0.16.0), but neither work. I built it ...
3
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1answer
55 views

If 30% of the network are malicious, how many nodes would an SPV need to connect to, to be sure?

If we assume that 30% of the network is malicious and colluding together to trick an SPV client, by telling him wrong information. How many random connections would the SPV client, need to connect to ...
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1answer
95 views

CoPay wallet won't open on my Phone [duplicate]

My Copay Wallet won't open on my Android phone. When I tap on the app the Copay Logo comes up then the screen turns white. My ohone is an android not IOS.
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1answer
37 views

How do I get rid of My so called bitcoin account [closed]

I was recently contacted by Brian from Bitcoin telling me I have registered but I did not. How do I delete the account and for them to stop phoning me
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1answer
49 views

Does broadcasting the network flood it?

There are a lot of messages that are sent around the Bitcoin network - e.g. updating new blocks, spreading new transactions. Do these not flood the network? Is it a pure broadcast to all the connected ...
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1answer
110 views

Do stale blocks get reported by bitcoin daemon?

Do stale blocks end up or get reported by bitcoin daemon client? I am writing a bitcoin service and need to listen for incoming transactions for select accounts using the bitcoin client. For this I am ...