Questions tagged [transaction-input]
Questions about the mechanics of redeeming a UTXO in an input script.
71
questions
0
votes
1answer
21 views
Is it possible to reference an input outpoint more than once in a transaction?
For example, could you have the following transaction:
A --> B
A --> C
Where A is an input txid and index, and B and C are outputs? The reason I'm asking is because I believe with SIGHASH_SINGLE ...
5
votes
2answers
181 views
Can signature be re-used to cash out everything in the address?
I Know for the P2PK locking script it was like this
[pubkey] <OP_CHECKSIG>
and then an unlocking script is provided as simple as this:
[sig]
But if it works like this, others can simply grab ...
0
votes
1answer
31 views
Do transactions need to be signed
I always thought a transaction can be accepted when all its inputs are correctly provided with their unlock script (which usually contains a signature) ——yes transactions may also be rejected with ...
0
votes
1answer
26 views
Input of a transaction
If i want to send 0.2 bitcoin to Bob, will my transaction (in the input field) contain the list of all my previous transactions (both the ones in which i received bitcoins and the ones in which i sent ...
0
votes
1answer
148 views
Usage of PkScript as a part of Inputs of a Transaction
I've seen transactions with PkScripts as part of Inputs
eg : Example of such a transaction
Could anyone please explain how this PkScript is used ?
1
vote
1answer
192 views
How to create a bitcoin transaction without inputs
How can I create a transaction without inputs and it will be broadcasted but of course won't get confirmed? I would like the simplest method to do this
0
votes
2answers
36 views
Can addresses used in a single tx be assumed to be from the same wallet?
can addresses of input of a single tx be always considered as belonging to same account?
Above is a sample transaction on bitcoin.
Here, input addresses are
3P2hJg8iRSBExAjd9yQGaazCLPFLeGB3hU (0....
0
votes
2answers
296 views
How to get input address and amount from vin using bitcoin core rpc
I am trying to find details of every transaction using bitcoin core rpc. First, I using bitcoin-cli getblock to get the block data, then use bitcoin-cli getrawtransaction to get the transaction ...
1
vote
1answer
43 views
What does is mean to have input from multiple wallet addresses?
I've trying to parse some data from the blockchain as provided by blockchain.info
My question is about transactions that have multiple inputs like this one:
https://www.blockchain.com/btc/tx/...
0
votes
1answer
48 views
OP_EQUAL not working properly
I went to https://siminchen.github.io/bitcoinIDE/build/editor.html to try some bitcoin scripting and I wrote this script:
<1PUzZ61FSVTn12CafJC85Vy1ts3BoFcXdU> OP_HASH160 <...
0
votes
1answer
94 views
How to manually sign a transaction with multiple inputs and multiple outputs?
I'm developing transaction constructor, but i faced several problems. To some of which i found answer in How to sign a transaction with multiple inputs?, for the rest i'll try to explain:
When we ...
1
vote
2answers
108 views
What’s the purpose of checking for input overflow?
Everyone knows this famous fix for block 74638 which still exists in other files. But there’s something I can’t understand, why check for inputs overflow since it’s not possible to have enough utxo ...
3
votes
1answer
243 views
Maximum number of inputs per transaction
In theory, what is the maximum number of inputs per transaction? Is it defined primarily by the maximum number we can store on the 9 byte varint?
How big of a number can be stored on 9 bytes?
Would ...
4
votes
1answer
160 views
Are all UTXOs locked by an address spent in a transaction?
Imagine I have 2 UTXOs locked by my address, each of which allows me to spend 5 bitcoins.
If I subsequently want to send just 2 bitcoins to someone else, will both UTXOs be used as inputs in the ...
5
votes
2answers
524 views
How do virtual size, stripped size and raw size compare between legacy address formats and native segwit?
This answer states that SegWit doesn't reduce transaction size. If this is true, why is it cheaper to send a SegWit transaction?
0
votes
2answers
42 views
Reference an UTXO of a transaction that has not been yet mined
How to reference an UTXO that has not been yet mined? I want to prepare a transaction and, before spreading it, use its UTXO as input for another relative timelocked transaction. Then, spread the ...
1
vote
1answer
319 views
bitcoinj java library not decoding input addresses for some transactions
I'm trying to "extract" sender's addresses from OP_RETURN Bitcoin transactions, but my code is not working properly.
getWalletAddressOfSender(final Transaction tx)
public static Address ...
-1
votes
1answer
67 views
How do these inputs/outputs make sense for this transaction?
Using coinbase, I transferred $1 in BCH to my friends BCH address. Now I am studying the transaction on a blockchain explorer as a learning exercise.
See here: https://blockchair.com/bitcoin-cash/...
0
votes
1answer
268 views
Why are the inputs of Bitcoin transactions signed?
This is my understanding of what a transaction looks like:
inputs:
input0:
txid: <funding tx0 TXID>
outputID: <output ID of UTXO in the funding tx0>
scriptSig: <...
1
vote
0answers
34 views
What to pass in Transaction Input using Bitcoinj library
URGENT - Need help with setting up Transaction Input and Output objects
Transaction rawTransaction = new Transaction(params);
txnAmount = Coin.valueOf(50000000);
rawTransaction.addOutput(txnAmount, ...
1
vote
2answers
59 views
How many weight units does an input use?
What is the weight unit cost of an input? And can you batch/aggregate the inputs or is it linearly growth when you add more inputs to a tx?
0
votes
1answer
53 views
Which values are GetValueIn() and GetValueOut() calculate?
In Transaction.cpp, there is a function CAmount CTransaction::GetValueOut() const.
In Coins.cpp, there is a function CAmount CCoinsViewCache::GetValueIn(const CTransaction& tx) const.
My ...
1
vote
1answer
231 views
what does it mean when a transaction contain multiple inputs?
Just like https://www.blockchain.com/btc/tx/230636ab4f285ca5e9f4c32dbae581c10d491a99493d8733c594af780f1edc5e
what does it mean when a transaction contain multiple inputs?
as i know, an transaction ...
2
votes
1answer
68 views
How does fee split between senders in a transaction?
I know how fee is calculated in a transaction,
but I don't know how this fee amount split into senders.
For example, consider the following transaction with 0 BTC miner fee:
inputs:
Alice ...
0
votes
1answer
141 views
Sign Bitcoin transaction with several inputs using bitcoinj. Broadcasting of transaction failed
Good day!
I'm working with low level API to make tx and sign it offline. But after all preparations I try to broadcast it and than i get an error from network:
16: mandatory-script-verify-flag-...
2
votes
2answers
180 views
If I reuse the same address can a previously used transaction be reused?
I was wondering, if I used an address adr0 to spend some coins in a transaction tx0 that give the coins to a different address adr1, and eventually, after some time, I receive some (completely ...
0
votes
1answer
100 views
How get outpoint from txIn
I'm from Ukraine and do not know much English, sorry. I'm not understand where in transaction keep outpoint.
Please give me example or manual how get outpoint from input.
0
votes
2answers
534 views
How get address from ScriptSig: PUSHDATA(N)?
I'm from Ukraine and do not know much English, sorry. I want to parse blockchain, but I have problems. In block 728 will first txs (user-user). But input-script have not public keys. I read this ...
1
vote
1answer
72 views
How to read a transaction from a block? Who paid whom?
I'd like to know how to read a 'transaction', so if we take an example of this transaction (which comes from block #520156) it's easy to spot that 'th' paid 'U8' 0.005BTC and
'9E' paid 'Y5' 0.013BTC. ...
3
votes
1answer
5k views
multiple input and output addresses in bitcoin transactions
I was checking transactions in blockchain.info. I have some questions about transaction information about input and output addresses.
block address:
https://blockchain.info/address/...
1
vote
2answers
66 views
how to use multiple time specific address in input scripts with difference balances?
look at to the following transaction (withdraw transaction from binance)
https://blockchain.info/tx/404fd22d3d88d129975d03fe2993f0126db8f066b3d8126d6cca676747439515?show_adv=true
How in input scripts ...
0
votes
1answer
43 views
Could someone explain how the TX operation here works?
I know this is a BCH address, but it's the best example I could find. The same concept holds for BTC, so understanding what's going on is relevant.
https://explorer.bitcoin.com/bch/tx/...
1
vote
1answer
66 views
How are 'excessive' numbers of inputs and outputs handled in bitcoin transactions?
I wrote a bitcoin transaction parser in python and it flips out when transactions have more than 255 inputs or outputs. Some transactions have their number of inputs/outputs represented by a 1 byte ...
0
votes
1answer
290 views
Unable to decode input address
It seems that some transactions, although having "prev_out" field in their "inputs", does not have "addr" in the "prev_out", i.e. they do not have input address. What is this kind of transactions for?
...
0
votes
1answer
851 views
what happens to UTXOs when a transaction output script is satisfied?
As per my understanding from the book "Mastering bitcoin", a transaction output contains three things
Amount - Bitcoin Value in Satoshis
Locking-Script-Size - Locking-Script length in bytes, to ...
0
votes
1answer
122 views
Is there a way to get all addresses from an Wallet?
If I was to search the blockchain for address X, then I see that it has two inputs in a transaction, X and Y.
I can safely assume that X and Y are owned by the same person?
Now if I look at all of ...
1
vote
1answer
117 views
Does input and output size vary by address type?
For instance, we have two outputs, output X sends to a P2SH address, and output Z sends to a P2PKH address.
Would output X have a different transaction size than output Z? What about the size of the ...
3
votes
2answers
195 views
Why do we refer to previous transactions in each transaction?
Isn't it enough to just have the Input Address, Output Address, Amount and Signature for each transaction?
0
votes
1answer
343 views
How to calculate scriptPubkey?
Given an address (i.e. 1BnPVV5Tt25cxbDg6DqoxJunjSL8reCGz6), how can I calculate its scriptPubKey in order to build a transaction?
1
vote
2answers
483 views
Can you specify more than one output index in a transaction's input?
It looks to me like each input to a bitcoin transaction has an index that specifies only one output from the input its spending. Is there a way to specify more than one output index, or do you have to ...
0
votes
2answers
103 views
Does using different addresses affect subsequent transaction size, given the same number of inputs?
I'm quite confused about the input count that affect the transaction size, example:
x1 = my receive btc address
x2 = my another receive btc address
x3 = my another receive btc address
Scenario A
...
2
votes
1answer
467 views
Can a low fee unconfirmed transaction prevent confirmations of following transactions?
To be more precise, consider the following situation:
Address A gets an input of 4 BTC.
You try to make a transaction from A to B with 1 BTC and a very low fee, which means its unconfirmed for a long ...
1
vote
2answers
394 views
Do i need to sign each input in a raw transaction?
I've been reading up about raw transactions on bitcoin.org and there are two examples Simple and Complex.
What I can't tell from the information provided is if it necessary to sign each of the inputs ...
0
votes
2answers
856 views
Sign transaction with multiple inputs using bitcoinj/peercoinj libraries
Good day for everyone! I have some troubles with adding signed Input to the transaction. Currently, I'm working with altCoin (fork peercoin) currency.
I'm trying build the transaction in the ...
7
votes
2answers
2k views
How do transaction costs compare between Bech32 addresses and legacy Bitcoin addresses?
Now that Electrum 3 supports Bech32 addresses for segwit, when sending coins to a legacy address are fees higher or cheaper?
4
votes
1answer
2k views
What happens when two transactions send to the same address?
I would like to know the consequences of sending bitcoin several times to the same address. Let us say I send 1 BTC from Address1 to Address3 and later I send 2 BTC from Address2 to Address3 again.
...
3
votes
1answer
115 views
How come that there can be many transfers in a single Bitcoin transaction?
In Ethereum one transfer has one transaction ID. How come there can be many transfers in a single Bitcoin transaction? For example, in this transaction:
https://blockchain.info/tx/...
1
vote
1answer
125 views
Processing multiple transactions very fast
Let's say I run an automated script, with the main purpose to send transactions as fast as possible.
I want to send one transaction with 5 BTC to one address and a transaction with 2 BTC to another.
...
1
vote
1answer
546 views
Submitted a raw tx that was already on the blockchain, to test it. I got 'missing inputs' instead of 'already exists'. Why?
In an attempt to more fully understand raw transactions etc, I went to look at tx 518c41d5e59114f6a23383afbe95f02cdd09cb50cabd8390bdd9162a890435b3 in its raw form being:
...
1
vote
1answer
422 views
How much does the weight of 2-of-3 multisignature inputs change between P2SH and P2SH-P2WSH?
I'm trying to calculate the weight of a 2-of-3 multisignature P2SH-P2WSH input. I found the related question Predict multi signature transaction size, which I've calculated out with m=2, n=3 here:
...
