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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.

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1answer
40 views

What happens if nSequence is set to 0x00000000?

I know setting nSequence 0x00000001 means the transaction is not valid until 1 block has elapsed since its's prevout confirms. At most one spend per two blocks. What happens if it's set to 0x00000000? ...
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2answers
34 views

How many BTC transactions happened in 2019?

I'm interested in a comparison between different blockchains and payment networks. Bitcoin has a block time of around 10 minutes, so there should be roughly 52,560 blocks in one year. However, the ...
5
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1answer
151 views

Where are transaction fees specified?

I've recently looked up the exact format of a transaction and came up with this (source with explanation): However, this seems not to include transaction fees. Are they not part of the transaction? ...
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1answer
20 views

Understanding transaction input and ouput

The definition of bitcoin transaction input and output that is there on the web is: Input = address from which money was sent, Output = address to which money is received 1. But when I looked at one ...
0
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1answer
19 views

How does the mining network know/agree when a block has been defined and thus needs to be mined? (The hash determined.)

Based on my understanding, the blocks are made up a group of transactions. But somehow, the network needs to both agree on which transactions are part of the block and also (I would think) the order ...
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0answers
35 views

transaction parts and identification

I'm making a reference document for bitcoin transactions using this transaction (its a random transaction). hash: it contains I would like to add detail to each of the addresses but I'm not sure ...
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0answers
34 views

transaction layout

I want to make a reference document that shows a full bitcoin transaction with brackets or lines to indicated each different part of the transaction. Then add a description of each part below the ...
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0answers
16 views

Need help with (Script failed an OP_EQUALVERIFY operation)

This is a repost of a question which i posted directly on the repository of bitcoinjs-lib, which you can see here I'm getting the following error when trying to push transactions: Err: ...
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0answers
31 views

Is Bitcoin a scam or safe to invest in [duplicate]

Is bitcoin a fraud/scam? If not, why are there people constantly calling it a Ponzi scheme, a pyramid scheme or other things similar? Does this indicate that these things have something in common in ...
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0answers
48 views

How do I find out where my bitcoins got sent to?

I withdrew bitcoin from my account in Binance in 2018 and still have the email they sent with address it said it sent to,18bVuA2FxDdz5gE4qf9MgbsNxp2F46PaLD The time and amount looked correct. Now I ...
3
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2answers
786 views

Where and how are raw transactions stored on the blockchain?

My understanding is that transactions are stored on the blockchain in double hashed format: ie SHA256(SHA256(rawtransaction)). But it is also possible to get access to the raw transaction. This means ...
0
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1answer
32 views

Developing a Bitcoin POS (Payment Page) - How do I identify the transaction

This is probably a basic question but I can not find an answer. We are developing a BTC payment process for a Point-of-Sale. We have managed to build this fine and can make requests (QR code) for a ...
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3answers
40 views

Bitcoin in wallet transactions but not on the blockchain (old wallet)

I've been checking old wallets and found an unconfirmed transaction that's on the wallet but not on the blockchain transaction id (missing from blockchain) ...
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0answers
26 views

How can I be sure that anyone (i.e miner) will not change outputs from transaction? [duplicate]

I am wondering if ie. miner cannot change outputs from transaction. We have example of transaction: { "version": 1, "locktime": 0, "vin": [ { "txid": &...
0
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1answer
29 views

what happens to low-fee or forgotten transactions

If a transaction has a fee that is too low then it is possible for the transaction to either age out of the mempool (14 days) or get removed because the mempool reaches its max size. So what happens ...
1
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1answer
79 views

What does bitcoin do that prevents someone from using your coins by just generating a key pair and saying “you” sent those coins?

I think I'm missing and understanding about the current process of how your wallet works and how the transactions are signed. For example, if I'm user "A" and there exists a transaction from ...
0
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1answer
51 views

Why do transactions have to be bundled in a block? Why not mine single transactions separately?

Why do transactions have to be bundled in a block? Why not mine single transactions separately? What is the advantage of bundling transactions in a block? Also are there any blockchains/decentralized ...
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0answers
22 views

BTC transaction taking nearly 12 hours to process — recommended fee selected. Community: please help! [duplicate]

https://blockstream.info/tx/d6763f114b0303fe88e2ff58c2bc6b48c23526471aad9384e046878639a05c25 see the above link in the block explorer. Please advise on why this may be the case and what/if there's ...
3
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1answer
35 views

Is one lightning network channel equal to one transaction?

I understand how a lightning network channel is like opening a bar tab, where you can make multiple transactions off-chain between two parties, and closing the channel puts the total tab on-chain. ...
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0answers
29 views

Does anyone know where this transaction was sent to?

I made a transactions in 2018 9/19 I was wondering if you can figure out where it went to. I'm assuming it was to a trading site. 3MgJe2W6mY7JM2YeXUyAbC2xAAoboi2y5u
0
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1answer
33 views

What does a wallet do?

what are the actual requirements for a bitcoin transaction? Not the simple inputs, outputs, verification or amounts, but in the technical sense. what does your wallet do? every thing I read says you ...
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0answers
7 views

Does receiving a transaction interrupt proof-of-work? [duplicate]

As I understand it, when a transaction is broadcast to a node it then gets relayed across the whole network. If you have a collection of transactions that you're trying to figure out the nonse for and ...
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0answers
25 views

boost propagation speed

Is there a way to boost propagation? E.g if someone sent me an amount, he says that he sees the txid in blockchain because he is connected to faster nodes, and I search this txid and I see it doesn't ...
2
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2answers
59 views

How can i trace a transaction where my bitcoin has been withdrawn from my paper wallet?

My bitcoin has been stolen from my paper wallet, can I track where its gone and is it possible to do so with my paper wallet?
0
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1answer
24 views

Sent BTC to Old Output Address

I sent BTC to an old Output address from a previous transaction and now I do not know where it has gone. Does anyone know how to fix this?
1
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1answer
39 views

Is it possible that two miners mine blocks with different headers because they include different transactions

Ok, it's a yes or no question: miners can include different transactions in a block, so does that mean that they search for different nonces
4
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1answer
107 views

When you make a Bitcoin transaction, can the receiving person (and the world?) really see how much coins you have in the entire wallet?

I really hope that I've got this horribly wrong, but I have to ask... I have this idea, which I base on comments and explanations I've heard over the years, that when you make a Bitcoin transaction, ...
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0answers
17 views

I sent BTC to an old address, Can I get them back? [duplicate]

I sent BTC to and old address of a friend. I`ve checked the status on blockstream.info and it is said that it has 1860 confirmations. Is is possible to get the BTC back?
0
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1answer
68 views

I have wrongly transferred 0.00184426 BTC, request please help to return it back to my wallet

I have wrongly transferred 0.00184426 BTC to address (TN3W4H6rK2ce4vX9YnFQHwKENnHjoxb3m9) request you to pls help me to return it back to my account.
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0answers
17 views

After sweeping an address I've received a tiny amount on both the address I swept and the dest of the sweep

For some time now I've had a small amount sitting in a legacy address, and I finally decided to sweep it and send the amount less the fee to another address. I chose a small fee, to not spend more on ...
0
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0answers
48 views

Secure Bitcoin Core [duplicate]

For example, take two PC (online, offline) with the last Bitcoin Core. Online PC has only public keys and the updated blockchain. It will use to watching for balance and create and send transactions. ...
5
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1answer
311 views

Why are there more than two transaction outputs in a coinbase transaction?

In a coinbase transaction there are always more than two transaction outputs. The first transaction output contains the reward. The second contains the witness reserved value. But why are there other ...
1
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2answers
178 views

fundrawtransaction - what is it?

I find on Internet interested article. How I understand the raw transaction can be created simpler without fundrawtransaction. bitcoin-cli listunspent [misconf=1] [max_number_confirmation=99999999] ''...
1
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1answer
41 views

How are txns sorted correctly in Merkle trees between nodes and validated via Proof of Work

I am interested in exactly what happens to transactions in the pending block (block that is being mined at the time). From what I understand, transactions are the stored as a Merkle tree hash inside ...
1
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0answers
49 views

Bitcoin Core Wallet - Invalid Transaction

A few months ago I tried to transfer my bitcoin but the transaction fee was too low which resulted in an Invalid Transaction. After eading about similar problems in this forum it is clear to me that ...
1
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1answer
39 views

If I buy crypto on a third party site, such as Coinbase or any other sites, how do I safely transfer my wallet into an external 'cold wallet'?

By cold wallet, I mean any type of encrypted USB etc. If this isn't possible how would I buy crypto and then be able to store it on a USB in the first place? This may be a stupid question but I'm kind ...
1
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1answer
33 views

What would be the easiest way to test the submitblock method?

I'm constructing a customized miner, and I'd like to check if the submitblock method would work properly when connected to mainnet. What would be the easiest way of doing that using RPC calls and ...
0
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0answers
36 views

Sign transaction offline [duplicate]

Can I create and sign transactions offline in Bitcoin Core? To be sure in safe my private keys.
1
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1answer
27 views

How is the witness reserved value set in a coinbase transaction?

In a coinbase transaction the second transaction output seems always to be a 32-byte witness reserved value. Is there any constraint on this value?
1
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1answer
27 views

How to set the sequence number in a coinbase transaction?

The sequence number seems to be used for locking a transaction in mempool. However, the coinbase transaction is not part of the mempool and thus the sequence number does not make sense. Is it just an &...
0
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0answers
19 views

Sent BTC , Receiver says not received, As per him it went in Mempool's back wallet [duplicate]

I have sent BTC , My receiver says that its not received it has gone to the back wallet of Mempool. and it would be reversed by mempool to my wallet back. I have sent it via localbitcoin. ...
0
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1answer
33 views

Why does decoded block data not match coinbase transaction input?

I am looking at the specific block at height 680175. Via bitcoin-cli getblock 00000000000000000004dbd66fa71fdcd62658bf8c8e2e153521257ad5858c71 0 I obtained the serialized, hex-encoded block data. ...
0
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0answers
21 views

Is there an API that accepts a transaction id/hash as an input, and returns all inputs and outputs for that transaction?

I'm looking for an API that accepts a tx id/hash as an input and returns all the inputs and outputs associated with that transaction hash. For example, the transaction described at https://www....
3
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1answer
29 views

Can you have a transaction without a change output?

While reading about the fees here https://metamug.com/article/security/bitcoin-transaction-fee-satoshi-per-byte.html The article said that "In the simplest case, you'll have one input and two ...
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0answers
34 views

Need help can’t send Bitcoin

I purchased $40 worth of Bitcoin from a btc atm. I use this method to add to the same wallet every time a couple times a week. This time when it loaded to my wallet I needed to send it from there to ...
0
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0answers
32 views

Is https://wincoindc.com is a scam website? [duplicate]

I was scammed by https://wincoindc.com. One of whatsapp user from China asked me for investment on CDC coin in wincoindc.com wallet. So I sent her BTC and she gave other coin in wincoindc.com wallet. ...
1
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2answers
29 views

Transaction Denial of Service

If the BTC network can only only handle on average 2,759 transactions per block. During a period where whales attempt a mass dump, could they essentially perform a DoS attack where they make a large ...
6
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2answers
2k views

Should I deposit 0.01 bitcoins? [duplicate]

I recently won 0.32 in bitcoins as I have been getting into NFT. I wanted to sell the bitcoins that I won, but in order for me to withdraw the bitcoins it’s asking me to deposit 0.01 bitcoins. Is this ...
1
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0answers
19 views

Prepare transaction with multiple recipient

Do you think it is possible programmatically prepare a Bitcoin transaction that has multiple recipient to send the amount to? Do you think I can show this trasaction in QR code, so payer can scan it ...
0
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1answer
47 views

Does the miner machine get any other type of reward except confirmation of transaction in bitcoin?

Does the miner machine get any other type of reward except confirmation of transaction in bitcoin?(The answer precedes ​another question)

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