Questions tagged [transactions]

This tag should be used for questions related to transactions. Transactions are signed messages regarding the transfer or generation of bitcoins. They are broadcast throughout the Bitcoin network and, if accepted, integrated in the blockchain.

311 questions with no upvoted or accepted answers
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254 views

How many bitcoin transactions can be verified per second on commodity hardware in 2020?

I am trying to figure out how many Bitcoin transactions could be verified per second. Am I correct that signature verification is more expensive than computing Merkletrees and hashes and therefore ...
4
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1answer
99 views

Clients without Isstandard() function

Are there any bitcoin clients without the Isstandard () function which would allow non standard transactions to be broadcast?
4
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1answer
1k views

Building Signed Bitcoin Transaction in Java

I have been attempting to build my own raw transaction generator in Java which I can then broadcast on the testnet network. The problem is when I attempt to broadcast the transaction it says there is ...
4
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1answer
389 views

How to explore transaction chain via Original Bitcoin API as blockexplorer does it

Is there any possibility to explore transaction chain via Original Bitcoin API (https://en.bitcoin.it/wiki/Original_Bitcoin_client/API_Calls_list) as the blockexplorer does it. If not, why?
3
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35 views

What are the malleability threat vectors when passing PSBTs to other actors?

If I am passing a PSBT (Partially Signed Bitcoin Transaction) between multiple people, and I pass on my signature for my UTXOs for given inputs, can someone take advantage of malleability and cheat me ...
3
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2answers
153 views

In Electrum, how does one watch/poll a wallet for an incoming payments to a certain address via API?

I want to create a simple way to accepting bitcoins on my own, using Electrum. I don't except big volume. I suppose, I'd have at most a handful of incoming payments in the beginning. That is, I ...
3
votes
1answer
5k views

manually signing bitcoin transaction

I'm trying to create a BTC transaction with one input and two outputs, one for change and one OP_RETURN to anchor data. And I'm doing all of that on my regtest backend. The raw unsigned transaction is ...
3
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0answers
980 views

How to directly query leveldb database to get get a record by transaction hash or by sender's address?

I learned that the blocks and transactions are stored locally in .bitcoin/blocks/index and .bitcoin/chainstate databases, respectively. I want to make a direct query to those databases to measure the ...
3
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0answers
4k views

Electrum transaction still says unconfirmed parent

A transaction from Electrum is still showing unconfirmed parent even though the previous transaction in the chain has completed. Electrum has shown this for 24 hours now. I realize that my fee is ...
3
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2answers
1k views

C# BC, successfully creating and signing raw transaction

First time on stackexchange to ask for help, sorry if i make mistakes (english is not my native language). I try to create a valid raw transaction on C# with bouncycastle and i seems stuck, not able ...
3
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0answers
92 views

Whisper Implementation in Bitcoin

Is there some kind of implementation in bitcoin to communicate between nodes, which is similar to the Whisper Communication in Ethereum ? Whisper, is a communication protocol for DApps to communicate ...
3
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0answers
389 views

Cannot obtain a lock - Already deleted lock file

I am trying to open Bitcoin Core of "Cannot obtain a lock on C:User/App..." I deleted the lock. file like previously suggested but cannot find a solution after that! If I reinstall will I loose the ...
3
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0answers
319 views

How to ignore balance check to cancel unconfirmed transaction (double spending)

I need to cancel a transaction that was sent without fee (using Blockchain.info). It is currently "Unconfirmed". The only way I have found is to do a double spend of the whole wallet, specifying a ...
3
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3answers
1k views

Get transaction that spent a transaction id

The blockchain.info API allows for querying information about a particular Transaction by its ID. But if you want to follow the coins to the next transaction, I'm not seeing what the next query should ...
2
votes
2answers
335 views

Minimum for sending BTC from BTC wallet

Is there a particular minimal amount of Bitcoin one is allowed to send under which it is too low to be confirmed as a valid transaction from the bitcoin wallet? For instance, I have got approx. 85 ...
2
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0answers
27 views

When did Bitcoin start to allow more than 2 transaction outputs?

The original Bitcoin paper specifies that: Combining and Splitting Value (...) Normally there will be either a single input from a larger previous transaction or multiple inputs combining smaller ...
2
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0answers
83 views

Sending a transaction from a Trezor One with outdated firmware and lost recovery seed

I have a Trezor One with firmware 1.4.2 and I have lost the recovery seed. I'd like to send a transaction from the device to another address that I control. However, because of its outdated firmware, ...
2
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0answers
32 views

Sign transaction externally

I create a transaction with inputs from a given address / public key without signatures. Every input needs to be signed. I use a different method to generate the signatures so I can't provide a ...
2
votes
2answers
203 views

How to exchange small amount of bitcoin?

Hi I have a little question could you tell which is the best method to exchange 2.27mBTC (18€) in euros or USD? I registered on coinmama but the minimum for them is 50€ is there any other exchange ...
2
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0answers
81 views

Address final balance is 0 after receiving 0.003 BTC

I generated a new BTC address (address A). I tried to send 0.003 BTC to address A. After sending them from my coinnomi wallet, the balance of address A remains 0 and from output seems that 0.003 BTC ...
2
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0answers
185 views

Getting Error "Unable to sign input, invalid stack size (possibly missing key)"

I have created a key from using coinstring, and then imported it into my wallet. Then I ran: bitcoin-cli signrawtransactionwithkey "$rawtxhex" "[\"$mykey$\"]" But it results in: Unable to sign ...
2
votes
2answers
120 views

What is a mechanism of providing Merkle Path?

In the Bitcoin, SPV node can query that its transaction is included specific block to full node that provides merkle path which has super fast calculation. In terms of full nodes, they have full-...
2
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0answers
229 views

How to send & receive bitcoin using bitcoinjs-lib?

First I create HD Wallet using BIP32 using mnemonics. Now I want to generate new child addresses with private key using xpub & xpriv for every receive. Then for example, I received BTC in 2 ...
2
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0answers
34 views

Script and DER in P2PKH

Im trying to figure out the script and DER In P2PKH, the "first part (scriptsig)" push in stack (<sig><pubK>) because is it DER? Instead the "second part (scriptPubKey)" you can map the ...
2
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0answers
284 views

Broadcasting signed transaction from Watching wallet using bitcoinj

I am working with watching wallet and Offline wallet using bitcoinj, I created Watching Wallet using tpub key of Offline Wallet I am receiving payment on watching wallet Fine, now I want to ...
2
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2answers
239 views

API for multiple blockchains

Is there an API to get data for multiple blockchains? Most blockchain explorers already offer an API but I'd like to be able to get information for different blockchains through the same API.
2
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0answers
425 views

Abandon Transaction or Increase fee

I'm using Bitcoin core v0.15.1 and I am trying to send my BTC to coinbase. I have waited over 72 hours since initiating a transaction and when I right click the "abandon transaction" and "Increase fee"...
2
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1answer
203 views

Format transactions into "from", "to", "value" and "cost"

I'm trying to write a script that parses the entire blockchain into a database. But I'm having issues figuring out how to store what I need to then aggregate the results and build a transaction list ...
2
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0answers
901 views

How is the transaction fee for sending bitcoins using Electrum wallet calculated ?

I am trying to understand how is the fee for transaction calculated for desktop wallets like electrum.
2
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0answers
87 views

How do you apply “-zapwallettxes” for multbit 0.5.15

I made a transaction a few months ago but the transaction is still not confirmed, the Bitcoins are debited from my account and the balance in my wallet is zero. Information on the transaction The ...
2
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0answers
84 views

Is a replay-attack-proof soft fork possible?

Say there is a soft-fork. A is the chain that implements it, B is the chain that has a transaction that's valid pre-soft-fork, but invalid post-soft-fork, so it's following the old rules. We know that ...
2
votes
1answer
275 views

Manually checking for credited bitcoins

If I have the bitcoin address, the private key and a transaction ID from Bitcoin (regtest mode) in shell variables, what Python code do I need to run to claim the Bitcoins are indeed intended for this ...
2
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0answers
58 views

Banned bitcoinj node ip

I've created many raw transactions today and after an hour I found out that my bitcoin node is only connected to 3 peers (testnet). Is it possible that my node has been banned due to wrong or double ...
2
votes
0answers
46 views

What bitcoin clients provide GUI support for "BIP 125 Opt-in Full Replace-by-Fee Signaling"?

What bitcoin clients provide GUI support for "BIP 125 Opt-in Full Replace-by-Fee Signaling"? If there are no GUI bitcoin clients that support it are there supported command line bitcoin clients?
2
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0answers
145 views

Specific fee in transaction

Is there any possible way to send transaction with specific fee (not fee per kb) from wallet in bitcoinj? Where should I look to find a solution :)? My code: Address address = Address.fromBase58(...
2
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0answers
251 views

I need to send a message to the person resposible for a specific wallet

Using Multibit, we sent btc to an incorrect wallet address. We have sent a small amount of BTC to this address before, so it is listed in our wallet's Transaction list, but is unfortunately not ...
2
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0answers
394 views

Bitcoin sending transaction error

I recently bought some Bitcoins(around 0.5) and sent some to a friend. He got them direct. Today I wanted to transfer some more but it didn't work. Every transaction was an error, besides one very ...
2
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0answers
389 views

Creation of <20-byte hash of redeem Script> in a P2SH Transaction

According to this example: Redeem Script: 2 PubKey1 PubKey2 PubKey3 PubKey4 PubKey5 5 OP_CHECKMULTISIG Locking Script: OP_HASH160 <20-byte hash of redeem script> OP_EQUAL Unlocking Script: Sig1 ...
2
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0answers
115 views

Include Bitcoin-Transaction within database-Transaction

I am writing a system that uses the Bitcoin Core JSON-RPC API. Use case: user wants to withdraw some BTC to his BTC address. My application handles this request by the following logic: Check if ...
2
votes
1answer
639 views

How to sign a transaction using BitcoinJ

I am having problem signing the transaction using BitcoinJ library without the Wallet instance, I only have the Transaction class instance and the ECKey in order to sign the transaction. Is there a ...
2
votes
0answers
596 views

Coinbase lost my transaction from Bitstamp

I'm moving my coins out of Bitstamp I was looking for another exchange. I have sent 0.00007 BTC to just test the transaction. I got the address where I want to send coins to from coinbase.com/...
2
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0answers
130 views

Need to do 400 transactions, how do I get them confirmed?

I tried to send 0.00000001 btc to about 7 addresses, and paid the 0.0001 fee. But it seems like this transaction won't go through ever. Those coins are lost :(. I have about 400 sponsors, and they ...
2
votes
0answers
444 views

CoinBase Callback URL in Java

I using CoinBase API for transactions in a game. I assign a callback URL with the address so as to get instant notification on payment transactions. the URL is called but it is not sending any data. ...
2
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0answers
743 views

Missing transactions with blockchain.info

All of the quick send transfers I've made on blockchain.info do not show up in my blockchain.info history. Furthermore, a person I have made a few quick send transaction with is claiming 0 ...
2
votes
1answer
840 views

What is the required input for python-bitcoinlib getrawtransaction command?

I am running a bitcoin node on my machine, fully synced with RPC commands enabled, rpc server live and txindex=1. In the command-line I can run the following RPC call and obtain the information ...
2
votes
1answer
217 views

Is there any party who is archiving all transactions that have been broadcast?

There is a person claiming that Blockchain.info/wallet sent a transaction but for whatever reason that transaction never got included in a block. If the transaction is valid today but perhaps just ...
1
vote
1answer
62 views

I sent my Bitcoin from Coinbase Wallet back to my coinbase wallet address. I basically sent it to myself but can't get access to it

I tried sending my Bitcoin from my coinbase wallet address to my cash app Bitcoin account but accidentally copied and pasted the Coinbase Wallet address instead of the cash app Bitcoin account. So ...
1
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0answers
62 views

Help analyzing this color coded hexdump of the Bitcoin blockchain

Sample of genesis, growth, and current height Sample of the latter part and the end of blk02655.dat. This probably covers parts of the last 10000 blocks. Process here: https://twitter.com/...
1
vote
1answer
58 views

Which projects and services are responsible for most of the Bitcoin transactions?

Which projects and services are responsible for most of the Bitcoin transactions? Project Transactions % ABC 50 XYZ 20 I am interested to know which projects really contribute in paying more fees ...
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0answers
53 views

How safe it is to store keys in Electrum? I think Luke Dash JR didn't recommend it

I agree with Luke Dash Jr and in general this wiki with the fact that doing anything without a full node is a mistake: https://en.bitcoin.it/wiki/Clearing_Up_Misconceptions_About_Full_Nodes But my ...

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