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Questions tagged [bitcoincore-development]

This tag should be used for questions regarding Bitcoin Core development. This includes questions about the source code and development of Bitcoin Core.

0
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1answer
38 views

Total Bitcoins in circulation on any given day? [duplicate]

I'm creating a spreadsheet to track total bitcoins in circulation from day 1. This would be to add up each Bitcoin per day created and add to an accumulating total. For example, if we picked any day ...
0
votes
1answer
18 views

How do I start a bitcoind server in deprecated mode for multiple functions

I have a bitcoind server running bitcoin-core version 0.17. Now since I need to use deprecated RPC methods I need to start the bitcoind server in deprecated mode, so I am already able to run it to ...
1
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2answers
33 views

How do I install a specific version of bitcoin-core

I need to run bitcoind version 0.17, however the latest available version is 0.18, if I follow the instructions from this link it installs the latest version. The below links lists the packages for ...
12
votes
1answer
1k views

Where in Bitcoin Core does it do X?

Note that this is a general question and answer designed to serve as a guide for finding things in Bitcoin Core. Where in Bitcoin Core's source code does it do X? How can I find that code by myself? ...
0
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1answer
35 views

How to transfer BTC balance when I have Private Key? [duplicate]

I have BTC public address and privatekey with balance. Can I Transfer the balance for another address?
0
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1answer
31 views

bitcoind bulk import private keys to different wallets and update with one rescan

I was wondering if someone already has this thoughts or problems: I generate bitcoin addresses and private keys by a script - to not depend on the bitcoin daemon and manage them in a database. By ...
7
votes
1answer
399 views

Could Neutrino technically as side-effect, incentivize centralization of the bitcoin network?

TWO questions on Neutrino:: 1) Could Neutrino technically as side-effect, incentivize centralization of the bitcoin network? Or other formulation: ...hinder higher degree of decentralization? Why ...
0
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0answers
31 views

Exception CompactSize when I parsering a nuimbar od the blk file >= 976

I wrote a bitcoin core parser, for my personal project and because it helped me to start understanding the bitcoin protocol as a data structure. This project mainly parsers every blk file and creates ...
3
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1answer
43 views

Differences to CCompactSize and CVarInt

I'm developing a parser bitcoin core and I have a problem whit the type CVarInt, I using the decodifier mode of the CCompact size but at the block 976 I Have a problem whit the type, because the value ...
0
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1answer
56 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
42 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 ...
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0answers
21 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
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0answers
20 views

How to decrease target difficulty in bitcoin source (v0.8)

I have followed this video series ( https://www.youtube.com/watch?v=mDGxGYvkDEE ) to create an alt-coin by forking Litecoin v0.8, which i followed the videos and successfully created an altcoin. Now ...
1
vote
1answer
103 views

How happens the serealization the data in the file blkxxxx.dat in the bitcoin

I'm writing a blockchain parser for bitcoin core with C++ and now I want to enrich the data I read with the raw transaction and the previous and next block hashes. I used this library to convert the ...
0
votes
2answers
65 views

Verifying a digital signature that a transaction is going to an output with value X inside a script

Edit; after writing this post i have found that OP_CHECKDATASIG is basically this in a nutshell. It is implemented on Bitcoin Cash and may soon be on Bitcoin Core as well. Someone has even written ...
0
votes
1answer
43 views

Why future Bitcoin Core release shouldn't be in python?

Python offers various advantages including simplified rules of coding and ease of readability. It offers OOP, cross platform compatibility and has numerous libraries that have been added over time. It ...
1
vote
1answer
61 views

Why was/is Bitcoin written in C++ instead of C? [duplicate]

Why C++ and not C? Are there some features of C++ not present in C required for Bitcoin to function as it does? I can see that a similar question has been asked before but I am more curious as to the ...
0
votes
1answer
42 views

Need to use two bitcoin core but issue with syncing

Need to know how we can use two bitcoin node for example. I do have two bitcoin full nodes A and B. Created wallet address at A and has all transaction details at wallet.db in node A. But I need to ...
0
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0answers
13 views

Is their a way to use Bitcoin's Testnet/LN Testnet within CLI without downloading Bitcoind?

I'd like to start working with Bitcoin's & Lightning's Testnet but don't want to download bitcoind on my current computer.
0
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2answers
23 views

Bitcoin core make error

I am new to bitcoin core development. I have created a clone using bitcoin core on a mac os mojave 10.14.3. I am have installed all dependencies and am able to run the autogen.sh and configure with ...
9
votes
2answers
165 views

BIP44: What's the use of internal addresses?

I've read other questions (and their answers) on this but I still don't see the use for internal addresses. I get that you're supposed to send the change of a transaction there but I don't see how ...
1
vote
1answer
90 views

How to discover startup flags or command-line options for bitcoind?

I'd like to query the Bitcoin daemon (bitcoind) to find out what startup flags (command-line options) were sent to it on startup (or the current state if it has changed, e.g. -server=0/1 changing). ...
-3
votes
1answer
57 views

Reset or backup from a blockchain possible? [closed]

i have a coin for my own interests. With this i will learn how works all. So i have install the daemon on a vps All works fine. Mining works. And the first 300 blocks i have created. Now i will ...
0
votes
1answer
34 views

in transaction, what is 'hash' data?

i'm studying Bitcoin: A Peer-to-Peer Electronic Cash System Satoshi Nakamoto and this paper introduce a transaction model. (above picture) but i don't understand what is 'Hash' means exactly i ...
0
votes
1answer
41 views

Can i create wallet services of bitcoin core wallet [closed]

Is it possible to create wallet url services for bitcoin core wallet
1
vote
1answer
77 views

Extract sender ID and recipient ID of a bitcoin transaction [duplicate]

I'm new to this world and I'm trying to learn the blockchain world and especially now I've concentrated du bitcoin-core, I would like to parser and get the various information like the various sites ...
0
votes
1answer
54 views

json-rpc of bitcoin not working for testnet(curl command)

I am trying this command to get transaction from bitcoin testnet: curl --data-binary '{"jsonrpc": "1.0", "id":"curltest", "method": "gettransaction", "params": ["txId"] }' -H 'content-type: text/...
0
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1answer
76 views

Unable to get transaction with json-rpc command

I am trying this command to get transaction from bitvoin testnet: curl --data-binary '{"jsonrpc": "1.0", "id":"curltest", "method": "gettransaction", "params": ["txId"] }' -H 'content-type: text/...
2
votes
1answer
43 views

where is the adjustment calculation for the target value in the source code?

Can someone point me to the source code and explain how the average is calculated for the adjustment of difficulty that takes place every 2016 ? Update: i have consulted with previous questions but ...
1
vote
0answers
34 views

Bitcoin Wallet generation and TX signing [closed]

I am developing a Bitcoin Wallet in Javascript. I've worked on ETH but it's my first time on BTC. Here are following queries if anyone can help: How do we generate bitcoin Wallet like we do in ...
0
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2answers
130 views

Non-standard transaction scripts broadcasting

I'm developing an application on Bitcoin blockchain, and I use output transaction scripts that are not standard according to the classic payment methods. However, even so, on Tesnet everything works ...
0
votes
2answers
144 views

Invoking the listunspent command via json-rpc on a full node

I am trying to use the following example code for C# programming, so I can connect to my own bitcoin full node: https://en.bitcoin.it/wiki/API_reference_(JSON-RPC)#.NET_.28C.23.29 Which has resulted ...
10
votes
1answer
1k views

What is the tradeoff between privacy and implementation complexity of Dandelion (BIP156)

Dandelion is a new relay protocol for transactions on cryptocurrency peer-to-peer networks. It has been heralded as a huge privacy improvement for cryptocurrencies at the networking level– I'm ...
0
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1answer
91 views

bitcoin core wallet transactions syncing

ill explain the steps i want figure out. I have an empty bitcoin core wallet . Step 1. I backup the wallet and go offline. Step 2. Someone send me a bitcoin to this wallet and i can see it(in ...
1
vote
1answer
87 views

Debugging Bitcoin Core with gdb - how to turn off compiler optimizations

I ran the configure script with the --enable-debug flag, then ran make. I am running unit tests: gdb --args src/test/test_bitcoin --log_level=all --run_test=script_standard_tests I'm trying to step ...
0
votes
1answer
61 views

CScript to CPubKey or derive CPubKey from CScript

Please can someone advise if it is possible to derive the CPubKey from a CSript object? Provided i get it up with an address before hand, I can use numerous functions to attain all the info from the ...
0
votes
1answer
69 views

Diferent redeemscript for the same scriptpubkey?

Most transactions to p2sh address has the follwing scriptpubkey HASH160 f45d94733d430261962932e0c847075195916a04 OP_EQUAL As I understood, this transaction do not need to be signed. Is it true? ...
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0answers
27 views

Transaction broadcast mechanism

After initiation of transaction, transaction will remain in the memory pool of all peered nodes. How Transaction reach to the memory pool after receiving by the node? Do transaction broadcast to all ...
3
votes
1answer
58 views

OP_CHECKLOCKTIMEVERIFY . Include / reject or will not included in block?

What happened if I translate to network transaction with the folowing redeem script: [now + 3 months] CHECKLOCKTIMEVERIFY DROP DUP HASH160 [Bob's Public Key Hash] EQUALVERIFY CHECKSIG This tx will ...
1
vote
1answer
62 views

Is it safe to store bitcoins on p2sh (no multisig)?

I've just generated p2sh btc address and look in the output script: HASH160 PUSHDATA(20)[e5c32bdc7f7fb1e6ae7aa1baf42a429803054d2c] EQUALVERIFY while normal (legacy btc address) transaction has ...
0
votes
1answer
56 views

Converting raw scriptPubKey to readable format

I am debugging Bitcoin cpp code. I wanted to see what exactly come for scriptPubKey property of output. Theoretically, I know this but I want to see in the code how does it looks like. Now while ...
0
votes
1answer
43 views

how to calculate max spendable from all wallet

Using latest bitoind, any way to calculate max spendable from wallet with some amount of outputs? For example i need to send all wallet amount to 2 outputs and set mining fee enough to get ...
0
votes
1answer
56 views

Lightning Network: what about tx fragmentation?

I really have no idea how to aks it right. Let me give an example: We have a some peoples A,B,C,D.... And A makes transaction to B, then A need to pay to C, then send some coins to D, etc... After ...
1
vote
1answer
139 views

bitcoin debug withe clion

I got this error when I have tried to compile on lubuntu 16.04 34: error: expected ‘)’ before ‘host_16bits’ inline uint16_t htole16(uint16_t host_16bits) using clion, is there any guide on how to ...
1
vote
1answer
78 views

Anyone could teach me more detail about version prefix

In this post Does the version prefix of an address force the type of transactions the address may treat?, I saw "the version byte doesn't actually appear in the final transaction." I don't understand ...
0
votes
1answer
380 views

how to get block information using node js

I have used bitcoin-core package in node js to get the information about the block detail using rpc command. For example: var Client = require('bitcoin-core'); const client = new Client({ headers:'...
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votes
2answers
99 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 ...
0
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2answers
165 views

find the maximum possible reward for creating a block using

I'm new to bitcoin development someone request from me to know the maximum possible reward for creating a block using some address. My Questions :- 1- Which framework and tools can help to do that ? ...
1
vote
1answer
40 views

Does all miners in mining pool increase the nonce variable one by one starting from zero?

Let us consider we have n miners in our mining pool. Now the manager of the pool verified the transactions and packed into a block to be mined. Then it passed the block to all n miners in the pool. ...
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0answers
14 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 ...