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Questions tagged [bitcoin-core]

This tag should be used for questions pertaining to Bitcoin Core. Bitcoin Core is an MIT-licensed Qt 5 GUI application for the original Bitcoin codebase. Additional/previous names include "Bitcoin-Qt", "Satoshi-Client", and "Standard Client". This tag should be used when referring to the Bitcoin ...

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0answers
24 views

Bitcoin Wallet generation and TX signing

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 ...
2
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1answer
39 views

Error parsing JSON in bitcoin-cli signrawtransactionwithkey

I have issues trying to sign a 2/3 multisig tx with the first private key. What am I doing something wrong or am I missing something for the arg? Command format: /usr/bin/bitcoin-cli -testnet ...
1
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1answer
24 views

Which Bitcoin RPC call is used for setting transaction priority?

Is there is any bitcoin RPC call for setting the transactions priority ?
2
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0answers
28 views

How to get multiple connections to the same node

I'm playing around with connecting my node to another one of my nodes to see how many incoming connections I can handle. Whenever I add node A from node B with bitcoin-cli addnode 1.1.1.1 add after ...
0
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0answers
16 views

sendfrom api taking txin for entire wallet.Not only for sender address txin [duplicate]

I've multiple accounts(label) in single wallet(wallet.dat). (Multi wallet is not added in final/master branch of Litecoin Ref link) Now when I use sendfrom api to transfer from one account to another ...
0
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0answers
54 views
+50

Posting CREATERAWTRANSACTION via JSON-RPC via C#

UPDATE 1: I have changed the StringBuilder, and am now using objects and then serializing the object using Newtonsoft.Json. MY SECOND ATTEMPT TO USE THE API REFERENCE CODE FROM https://en.bitcoin.it/...
1
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0answers
31 views

What is the best way to test new consensus protocol?

I wanted to test a new consensus protocol. However, the bitcoin core is a large codebase (>100k lines). Is there any small codebase which is designed to test new consensus protocols and includes only ...
0
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0answers
6 views

Java USES JSONRPC remote call bitcoincore to return 403 errors

Java USES JSONRPC remote call bitcoincore to return 403 error, may I ask what is the reason, the account password is correct, and the address port number is also correct, the firewall also played the ...
0
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1answer
21 views

Is the hdSeedid in Bitcoin Core 0.17 RPC the actual seed itself?

I'm trying to find out the seed for the HD wallet in the 0.17 release of Bitcoin Core. I used the getwalletinfo command in the RPC console which produced information which includes a string that it ...
0
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2answers
37 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 ...
0
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0answers
10 views

Reference to UTXO Database initialization [closed]

I am looking for the exact file and line number of the UTXO initialization in the Bitcoin source code.
1
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2answers
26 views

How is blockchain stored on disk?

Hi how is blockchain actually stored on disk? I noticed bitcoin uses key store database level DB but what is the structure? https://github.com/bitcoin-core/leveldb-old/blob/bitcoin-fork/doc/...
0
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1answer
26 views

Did Bitcoin Core relay blocks sequentially or in parallel to peers before Compact Blocks?

As I can see in the Bitcoin code, currently a node sends a block in parallel to all its peers. This makes sense as the block sending time is relatively small compared to the P2P latency. However, my ...
-2
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0answers
51 views

Lost bitcoins. 100BTC Reward [closed]

Do anyone know how to solve this problem? Reward is 100BTC. I'm attaching question also to bitcoincore-developmen to find out if there are any solutions, which could already do something with this ...
3
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0answers
45 views

Bitcoind 0.5.3 stuck at block 364,670 - what to do?

I compiled bitcoind using the same steps as last year. In particular I set DB_CONFIG: set_lg_dir database set_lk_max_locks 537000 Unfortunately once I hit block 364,670 (2015-07-10) I'm treated with:...
0
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0answers
22 views

How should i start learning code of any cryptocurrency? [duplicate]

I want to learn about the code of cryptocurrency with all it's features including POS and master node features, currently I have XSN code (stake-net coin) and i want to learn it so i can make use of ...
0
votes
1answer
18 views

RPC giving error -13

Bitcoin rpc calls giving error -13: Error: Please enter the wallet passphrase with walletpassphrase first.
0
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0answers
12 views

How i can separate the sent and receive transactions using bitcoin rpc for particular account?

I want to list down sent and receive transactions on the web wallet ,But i cant find an bitcoin rpc call to separately get sent and receive transactions
0
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1answer
28 views

What is the meaning of “service bits” in Bitcoin?

// Note that of those which support the service bits prefix, most only support a subset of // possible options. // This is fine at runtime as we'll fall back to using them as a oneshot if they don't ...
1
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1answer
39 views

Bitpay xPrivKey to private key

Network: BCH testnet Client: bitcoin-abc-0.18/bin/bitcoind and bitcoin-cli I want to convert xPrivKey which is from exported Bitpay wallet file to private key for using bitcoin-cli importprivkey ...
5
votes
1answer
44 views

Is Bitcoin Core storage compatible across different machine architecture?

I want to run Bitcoin core on a raspberry PI (arm32v7), but the initial sync takes way too long. I am thinking importing the UTXO set from another of my node which run on x64. Would it work? Is it ...
0
votes
1answer
17 views

how to convert pubkey wif address to hex format with bitcoinjs-lib? [closed]

Is there a way with bitcoinjs-lib to import a WIF pubkey: 1HVTiWkuGKEJXJupriTdY5MKngcq2bH6P4 and get the hexadecimal version like this: ...
1
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1answer
24 views

Can I have the same wallet opened in multiple computers?

I wanna put my wallet.dat to another node, and keep them online at the same time, Can I do like that? and is there any problem? BTW, how can I do load balance with bitcoin node? Thx
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1answer
39 views

How to make segwit transaction and bech32 mandatory

Is it possible to make segwit transactions (and possibly segwit address: Bech32) mandatory in the Bitcoin Core code? In other words, when a transaction is created using the wallet, the transaction ...
0
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0answers
12 views

Is there a way to extract the transaction amount for each transaction in each block with bitcoinJ?

Is there a way to do this as in the question above? The link to package is below: https://github.com/bitcoinj/bitcoinj
0
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1answer
34 views

how to create a transaction that can only run in bch-abc using javascript?

I use the "bitcoincashjs" or "bch-lib" and want to add a new opcode "OP_CHECKDATASIG" to output.How to do? const utxo = { 'txId' : '...
0
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2answers
33 views

Lighting Network transaction

I have never used LN, but read about it and I am confused about one thing, if I am send BTC through channel, then receiver exactly know who send this and can in some way check how much sender's ...
1
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0answers
25 views

What is the cheapest way to pull the data from bitcoind/bitcoin-core?

I am wondering if there is a cheap way to scrape the bitcoind data. I am using a remote server and cannot spend too much time running this program otherwise it would be expensive. I am wondering if ...
0
votes
1answer
25 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 ...
0
votes
1answer
28 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
33 views

Is it possible that one knows how much BTC is in wallet.dat without knowing password?

Someone says that he or she wants to sell his or her wallet.dat which seems to contain a lot of BTC. He shows screenshot of wallet software containing many BTCs. He says that when I place wallet.dat ...
1
vote
0answers
16 views

Can the genesis block of bitcoin be put to qr codes? [closed]

I Think I own the genesis block it really eats my name.it has my real name on it with QR codes.WHen I check it from Blockchain site its the same as the one I got.
1
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1answer
34 views

Security of Bitcoin Wallet

I have a doubt on Bitcoin wallet. Suppose I have an online Bitcoin wallet. Now, someone breaks into my computer and steals my Bitcoin wallet. Fortunately I have a backup of my wallet on another ...
2
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1answer
58 views

Why is 20 the maximum public keys in a multisig transaction?

In script.h the following limit is set: MAX_PUBKEYS_PER_MULTISIG = 20 I'm wondering: Why is the limit set to 20? How would one would construct a script that allows n more than the current OP_16? E....
0
votes
1answer
38 views

LoadBlockIndexDB: transaction index disabled after copying blockchain

Previously discussed here: LoadBlockIndexDB: transaction index disabled but thread was abandoned. Started a new thread here. Twice I have gotten the same error: 2018-11-20 15:43:41 LoadBlockIndexDB:...
0
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2answers
57 views

Abandoned transaction - now can't send anything

Earlier today I sent a tx with too low a fee (5.4sat/byte). After many hours in BitcoinCore I abandoned the transaction with the right-click option with a plan to send it again with a higher fee. I ...
1
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2answers
69 views

Bitcoin core wallet transactions and synchronisation

I have Bitcoin Core wallet. I wanted to know if each transaction I need sync the wallet? (I have a new business that accept bitcoin and I must to save each transaction)
1
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0answers
17 views

Upgrading v0.14.2 to the latest v0.17.0.1 for 3 active wallets on one device

I am using a laptop dedicated to bitcoin, with bitcoin core installed, and switch between 3 active wallets. The switch is done using backups of all the files (including ‘wallet.dat’), held in ‘%...
0
votes
1answer
25 views

Migrating from bitcoin core to bitcoind

I have installed bitcoin core in my ubuntu-14.04 which is working fine. Now I want to install bitcoind in the same Machine. Can I install bitcoind along with bitcoin core or I need to uninstall ...
0
votes
1answer
39 views

how to see bitcoin blockchain and addressess for testnet [duplicate]

in my site the user has a link to check the transactions and his wallet address. right now I am using this: blockchain: https://blockchain.info/tx/#{txid} address_url: https://blockchain.info/...
0
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0answers
21 views

remote connection rpc rejected in bitcoin 0.17.0 in centos7

I'm trying to migrate my bitcoin node from version 0.16.1 to version 0.17.0 in Centos7. he descargado todo del sitio oficial, al igual como lo hice con la vesion 0.16.1. y he ejecutado el daemon ./...
0
votes
0answers
17 views

Can I get bitcoin with melli bank account [duplicate]

I really need to get bitcoin with my Melli debit card but I don't know how to process it,I'm new here and I need to buy bitcoin with my debit card.please I need someone to put me through this
0
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2answers
38 views

i found bitcoin wallet I need qr private key where i can get that code? [closed]

i found bitcoin wallet I need qr private key where i can get that code ? Is it impossible to get qr private code ?
1
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1answer
29 views

How do you set txindex to 1?

I am using bitcoin.rpc.RawProxy to connect to bitcoind and scrape the data. But I am getting an error when I gettransaction and I have to reindex the blockchain. Thus I am wondering how I set the ...
0
votes
1answer
27 views

Cant start bitcoind - “Block files have previously been pruned”

I installed bitcoin, following this instructions. I mostly used it with bitcoin-qt -testnet options, even made a few transactions in testnet. I am using the pruned mode. Now I want to run the ...
0
votes
1answer
25 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? ...
1
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0answers
23 views

Status: 0/unconfirmed, in memory pool. Cnee's address expired and reject this transaction [closed]

Internet connection was lost during transaction. Bitcoins gone, but no chance to confirm transaction at cnee side. So after some hours cnee's address expired and reject this trnsctn. Now, as 24H ...
0
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1answer
45 views

Wallet shows 0.00000000 btc

I’m running a Antminer S9 for a week now Just today the wallet finally synchronised but shows 0.00000000 btc 🤔 why?
1
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0answers
24 views

Does Bitcoin Core v0.17.0 run on native wayland?

I'm trying to run bitcoin core v0.17.0 on Wayland on Fedora 29. When I run bitcoin-qt I receive Warning: Ignoring XDG_SESSION_TYPE=wayland on Gnome. Use QT_QPA_PLATFORM=wayland to run on Wayland ...
1
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1answer
21 views

Why is input number non-existent in bitcoin API?

Why when I use this public Bitcoin Api to practice a command, the input value of BTC does not show up? API Call can be found here: API Website Transaction from block explorer can be found here: ...