Transactions are signed messages regarding the transfer or generation of bitcoins. They are broadcasted through the network and, if accepted, integrated in the blockchain.

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resend a transaction with different fee? [duplicate]

If I create a transaction with too low fee, and it is not confirmed. Can I create the same transaction again, with higher fee, and send it to the network?
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Can a bitcoin transaction get confirmed unexpectedly?

Let's asume I make a transaction with no fee and doesn't get confirmed after a while (let's say 10 days). Could it be confirmed after that if for some reason some miner keeps a copy? I don't ask if ...
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Transfer of Bitcoin from Blockchain to my wallet

when I checked blockchain with my bitcoin address my bitcoins are there but not yet transferred in my xapo account. How can i get it?
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Bitcoin reversible strange transactions

I am aware that a normal bitcoin transaction cannot be reversed once broadcast and confirmed on the network. My question is whether it is possible to create a strange transaction with an unusual ...
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Help me: transaction [duplicate]

Good afternoon, I use Bitcoin Core v0.12.1 16 of July, I made a from 1GEkFLWAAH1cLbHkfyVSgmZfAg22ug57vh account to 12dSnA8NpE8mRgFp9LeVbh3XsyrVTNdtnX account (ID ...
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i want to get back my 0.42 btc [closed]

today i login into my account. but it was not login due to invalid username password. i request for password. I received email from you at my email account. i opened it and reset password. then i ...
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which is cost effective running a bitcoin exchange or bitcoin atm [on hold]

I seriously want to start a bitcoin business and desire to have good returns in a cost effective way. I have been doing my research on been a bitcoin exchanger or partnering with one when I came ...
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1answer
22 views

Transaction failure due to “made-up” transaction

For instance, if I am trying to send 1 BTC to an address, however, I do not have enough BTC. What will happen to this transaction? Will the sender and the recipient both receive notification ...
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1answer
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How to see previous transactions?

This question is linked to this one. I try to understand the bitcoin block by exploring and viewing every piece of information, since the blockchain is public and shared. When the sender transacts ...
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1answer
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Can more transactions be processed within a centralized bitcoin exchanges than in the rest of the bitcoin network?

I've heard that centralized exchanges are more efficient, and that a centralized bitcoin system as a whole would allow for more transactions to be processed. Does that mean that within centralized ...
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Created receiving address in Bitcoin Core but deleted it before receiving bitcoins

I created a receiving address in Bitcoin Core, sent myself some coins from localbitcoins.com and - silly me - deleted the receiving address from Bitcoin Core. tradeblock.com shows the transaction ...
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Regrouping accounts belonging to same user

I am analysing some BTC transactions for academic purposes. As part of that work, I would like to identify users with several accounts and regroup them under a single identifier. I have assumed that ...
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How are transaction fees claimed from a technical point of view?

A typical transaction has one or more inputs and one or more outputs. Since there is no amount specified for inputs, the rule is that ALL of the inputs is always transferred. Any discrepancy between ...
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3answers
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How do miners understand what a transaction does?

Bitcoins are spent via transaction scripts that can be quite complicated. How do miners understand what a transaction does? A miner has to decide whether to include a transaction in their block, but ...
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Problem while trying to transfer all my btc to another wallet [duplicate]

I was trying to move all my btc to a new wallet, so I sent all my available btc from my bitcoin core wallet to a localbitcoin.com wallet, but as far as I can understand, I didn't send the fee by doing ...
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What is the composition of transaction types in current blocks?

What types of transactions do we see in blocks today and how much of the blockspace do they occupy? I.e. does someone have data how much of the blocks are Pay to PubKey Hash, Pay to PubKey, Pay to ...
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Data on illicit activities for machine learning

Is there any published data on fraudulent transactions? E.g. has the FBI published a list of blacklisted addresses from the Silk Road controversy? This is in regards to using such data for machine ...
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3answers
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How a block is defined (size, number of transactions)?

While exploring the Blockchain.info charts, I learned that: The average size of blocks is increasing (max=1MB). The number of transactions in one block is also increasing. After reading some ...
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1answer
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How do traditional transactions take place (paypal, banks, etc) in comparison to Bitcoin transactions?

Here we talk about bitcoins and blockchain. It is said they are more secured, and people ask questions about how they are implemented. Since I am a complete newbie to blockchain, and I don't know ...
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Since the blockchain is public, how can we see it?

The blockchain is a shared public ledger for Bitcoin. What does that mean exactly? Is it possible to see, publicly, all transactions? For every bitcoin a person owns, is he able to see all the ...
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Redeem input script without signature

I am trying to make a strange transaction which can be redeemed by solving a simple math problem, e.g. square root of 2. With the answer the student should be able to unlock the input and claim the ...
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1answer
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Can Bitcoin full nodes pinpoint the true source of a transaction which they've relayed?

Assume I'm running a full node and that I've relayed some transactions. As a full node owner, can I pinpoint the true source of the transactions I've relayed?
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Bitcoin protocol: How do I build my block to get the newly generated coins? [duplicate]

I am writing a software to mine bitcoins (in golang) as part of a college project. I'd like to know how is it that I build a block (which would potentially get appended to the end of the block chain) ...
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bitcoin protocol: transaction encoding

I am writing a program (in golang) to mine bitcoins. Supposing I have this dummy transaction, how may I encode it so it can be used in the block im trying to mine? Also, supposing I have a block ...
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Where can I find an average transaction value chart?

I'm curious on what is the average amount of BTC transacted per transaction. I'd basically like to combine blockchain.info's Estimated Transaction Value and Number of Transactions Per Day charts. I'm ...
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Why is the ledger public?

To me, banking is not a public thing. I don't want people to know what's in my bank account at what time, or who I sent money to. I know that I can make a new address for each transaction, as ...
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Why don't transactions store 'account balance'? [duplicate]

I've been reading up on the topic of transactions in Bitcoin, and I don't understand why each transaction doesn't just store 'total amount in this address after transaction'. It's easily calculable by ...
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Specification of Transaction Inputs - Bitcoin vs Ripple

In Bitcoin, the transaction inputs (UTXOs) are specified as a tuple (transaction index, vout) since there is no notion of an account in the bitcoin system and the address (pointed to by vout) alone ...
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Transaction with Multiple Inputs having Same Address

Why do transactions have multiple inputs with the same address? Is it because the amounts were obtained in the address through multiple separate transactions. Shouldn't the amounts be clubbed to a ...
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1answer
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Smart contracts in bitcoin

Is it possible in bitcoin to start a smart contract preloaded with some amount of money. And if some other user is ready to pay to the smart contract a certain amount of money, the smart contract ...
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Transaction flagged as having a non-standard input

A few hours ago I've sent a transaction which is not being added to a block, and on blockchain.info it flagged as "non-standard input". I've used pybitcointools to create the TX. What is wrong with ...
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1answer
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Can receiving money make a transaction fail?

Scenario: Alice has a wallet A1bz (let's say these are the first 4 characters of the private key in wallet import format so we don't have to deal with too many characters) with wallet address 1A1 and ...
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2answers
49 views

Issue transaction without being online

Is there some way in which User A who could load a transaction onto the block chain and if some other User B who is willing to pay User A, without User A being online could release the loaded ...
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Inconsistent Results with Blockchain Data API

I'm using the Blockchain API library (Python, v1) from blockchain.info available on GitHub. The blockexplorer.py module provides functions for obtaining blocks from the blockchain, specifically ...
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Recovering the public key from a transaction

Is it possible to get the public key of a user, if we have a transaction from that User in my wallet ?
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What happens if the transaction interrupted during proof of stake?

Suppose I've few coins for proof of stake, and suddenly my internet connection goes off or power down of my pc, what may happen if a transaction was in the middle, would I lose my coins which were in ...
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1answer
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What is the largest number of blocks a transaction has ever waited for confirmation?

What is the largest number of blocks a transaction has ever waited before eventual confirmation? Please exclude: Transactions with no fee Transactions delayed because of unconfirmed inputs ...
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2answers
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Making money with bitcoins [duplicate]

I heard stories of people on the Web making money with Bitcoins. I heard the term "mining", with bitcoin mining, but I don't really know how it works. Can someone explain to me the process and what ...
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2answers
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First confirmation time vs miners fee's

After submitting a transaction to the blockchain.. 1) If I pay a higher transaction fee will first confirmation happen faster? 2) I found today that a 250B transaction with 1000 Satoshi fee took ...
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3answers
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What is the most expensive Bitcoin purchase ever made?

Relying only on publicly disclosed data, what is the most expensive Bitcoin purchase that has ever occurred? "Expensive" can be determined either by: Highest purchase price in Bitcoins Highest fiat ...
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1answer
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How is a transaction's output signed?

I m a newbie. I did search for answer to similar question. My searching was unsuccessful. In a transaction Tx, the hash pointer of the earlier transaction (say TxE) that serves as input to Tx must ...
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Transaction with `OP_RETURN` to a particular address

How do I formulate a transaction with OP_RETURN to a particular address using the bitcoinj library? SendRequest req; Transaction transaction = new Transaction(Main.getNetWorkParameters()); ...
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Sharing the Master Keys in BIP32

What is the Best way to share the Master Public Key and Master Chain code generated using BIP32 in Bicoins with a user that I don't trust ? I just want the second user to monitor my wallet and not ...
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1answer
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Transfer from Bitcoin Core to Electrum expired before full synchronization. Where are the bitcoins?

I started using Bitcoin Core and transferred coins to this wallet. When synchronization got to the point where the coins showed up in the wallet I sent them on to an Electrum wallet, although Core had ...
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Do we get paid by the IP? Or is the address?

Do we get paid by the IP? Or is the address?
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0answers
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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 ...
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How to get the Public Keys of a bitcoin User

Is there some way in which I could get the public key of a Bitcoin user ? Lets say I have transaction with another Bitcoin user. Is there some means by which I can retrieve the public key of the ...
4
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2answers
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How can I choose the address bitcoins are sent from?

So let's say I have multiple bitcoin addresses (some of them already received bitcoins), created a new bitcoin address, received bitcoins on it and would like to use the very same address to send them ...
2
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0answers
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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 ...
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1answer
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Why do websites such as satoshimines and bustabit generate new addresses every time?

Why a single address for each user not enough? Can't they just verify the incoming transactions? If I want to mimic this practice, how can I generate unlimited addresses, from which transactions can ...