Questions tagged [output]
The output tag has no usage guidance.
65
questions
3
votes
1answer
43 views
Why is a 20 byte hash acceptable in p2wpkh but p2wsh needs 32 bytes?
Why is it acceptable to use a 20 byte hash to represent single-sig witness programs whereas a 32 byte hash is used for pay to witness script hash?
0
votes
2answers
35 views
Why same output address is invalid in a transaction on Bitcoin Core?
I'm studying Bitcoin Core currently. I found incomprehensible code, that shows making a transaction is rejected if there are same output addresses in a transaction.
See Fig1, Fig2
Origin source code ...
1
vote
0answers
25 views
How does a Drivechain output work?
It is said that Drivechain works by sending a transaction output to a miner/hashrate-controlled escrow. I know it works by allowing miners to vote over a large number of blocks on transactions, that ...
1
vote
0answers
39 views
How many TXO have been created in total?
I've seen some statistical data about the Bitcoin UTXO number (around 61M currently). I was wondering how many TXOs (including spent and unspent) there were in the complete history of Bitcoin?
0
votes
1answer
44 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
2answers
27 views
Where are the non-scriptPubKey outputs in the chainstate leveldb?
I read
https://bitcoindev.network/understanding-the-data/
and it explain that the leveldb of the chainstate contain transaction with at least one unspent output.
And it has "The scriptPubKey and ...
0
votes
1answer
27 views
How can I find the transaction that spends a specific output via an API?
I am wondering how I can find the transaction that spends a specific output (for a large number of transactions). So for example, I have a transaction like the following: https://www.blockchain.com/...
2
votes
2answers
82 views
Why is the value field 8 bytes in transaction output when it can be achieved with 7 bytes?
Bitcoin uses a 8 bytes value field in the transaction output. However, the total supply of bitcoin is capped at 21M. Theoretically, even if all the 21M bitcoins are transferred to a single address, ...
1
vote
1answer
62 views
What does “Nonstandard output” mean on Tradeblock transaction page?
I tried to send bitcoin but the recipient hasn't received it.
The trade block page shows "Nonstandard output" under outputs as shown in the link below:
Tradeblock page for transaction
I used an ...
0
votes
1answer
45 views
Two question about bitcoin transaction signing
I know that the signing should use public key, what if the private key is used in signing the output? Does that mean anybody can use the money in your wallet? And is there any difference between P2PKH ...
0
votes
1answer
76 views
Newly generated coins
New to BTC world so my question is how and what can I do with newly generated coins what's the process and how to see balance of that in wallet? Can I send those to paper wallet
-1
votes
1answer
55 views
Are there minimums for output values and transaction fees in Bitcoin?
The article "The Bitcoin Lightning Network Summary" by lightning.network mentions:
"Lightning enables one to send funds down to 0.00000001 bitcoin
without custodial risk. The bitcoin blockchain ...
-1
votes
1answer
63 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
19 views
Why does this transaction results in more than 1 unspent output?
This transaction results in 6 outputs in total. Why did it end up with having 4 unspent outputs? I read this answer from another question, and wondering, could it be because the user actually chooses ...
0
votes
2answers
49 views
Why does this transaction results in only 2 unspent output (and no spent output)?
This transaction is from one of the latest block. However I don't understand why it seems to be just dividing a single transaction without being spent and transferred to someone else.
2
votes
2answers
267 views
What are the hashes in Unspent outputs?
I am a newbie to Bitcoin.
Looking at
curl https://blockchain.info/unspent?active=1Cdid9KFAaatwczBwBttQcwXYCpvK8h7FK
I guess that the script is the owner's address.I am not sure about this.
"...
4
votes
2answers
195 views
what's the point of “n” in “vout”? getrawtransaction
It seems like "n" is the index, is that true? If that is the case, why is the "n" key necessary?
Example:
bitcoin-cli getrawtransaction ...
0
votes
1answer
176 views
Generating Output Script from Bitcoin.js or other Javascript Library
I'm attempting to use the Ledger Wallet API to sign a multi-sig transaction. The API works as follows:
var inputs = [
[ "71f97fa2a21486ecd99674a8ae068d92acd2e9db49c199473be39984e6cbe0f6", "00000000"...
0
votes
1answer
103 views
I seem to have too many unspent outputs for my given balance. What am I missing?
I have an address on the testnet. I started out with 1.3 btc. I then sent 0.5 btc to another address. My balance is now 0.8. OK, that makes sense.
I expect now to have one UTXO which was the 0.8 in ...
1
vote
2answers
35 views
How output transaction works in Bitcoin?
Click here for reference.
Note also that an output can be used only once. That's why there's a concept of "change address" in the bitcoin ecosystem: if an output of 10 BTC is available for me to ...
0
votes
1answer
63 views
Why do I get 5 bytes worth of 0x00 hex values in both outputs?
From the hex generated by the createrawtransaction command, I understand that the following is the output value:
...
0
votes
2answers
41 views
Breaking down the hex value for output 1
Within the hex generated by createrawtransaction, I am trying to understand the output 1 hex.
The output 1 hex I have is:
76a914ab68025513c3dbd2f7b92a94e0581f5d50f654e788ac
Spacing out the ...
1
vote
1answer
323 views
How to find out the requirements for spending an output script?
How do you find out the requirements to spend an output script?
Do you decode the hash?
2
votes
1answer
104 views
At most two outputs according to Bitcoin whitepaper. Multiple outputs in real transactions. How come?
The original Bitcoin whitepaper mentions that there can be at most two outputs:
Normally there will be either a single input from a larger previous
transaction or multiple inputs combining ...
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
261 views
where do unspent outputs come from?
This post asks the same question: What is an "unspent output"? but the answers for me are completely incomprehensible, probably because I lack a key piece of knowledge.
I have read every ...
0
votes
1answer
812 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
43 views
Forwarding BTC without approval
Since all I need in order to send a transaction is the receiver address.
What is the mechanism (if any) that stops me to send transactions to someone BTC without his approval?
0
votes
1answer
64 views
BTC not received after sending
I have a transaction sent from Coinbase on 12 Dec 2017. i can see it on the blockchain, fees taken but the rest is unspent.
How can I force the transaction to complete.
Why didn't it complete
...
5
votes
1answer
809 views
Will all UTXOs eventually be worth 1 Satoshi?
If I want to spend 0.4BTC and I only have a UTXO for 1.0BTC, I will send 0.4BTC to the seller's address and 0.6BTC to my address. The seller has one UTXO and I have the other.
One UTXO has become two....
3
votes
2answers
87 views
Is it possible to make an output only spendable to a specific address?
Basically, the entire question fits into the title. Does the Bitcoin scripting language allow for a transaction output to only be spendable to a specific address? Is it possible to forbid all other ...
1
vote
1answer
114 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 ...
2
votes
1answer
462 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
3answers
98 views
Can unspent outputs only get smaller?
It seems that when transactions occur the outputs only get smaller and are never aggregated. There is no apparent way to combine multiple outputs into a single output. The problem I see with this is ...
0
votes
1answer
1k views
How to create raw bitcoin transaction with multisig type of output scriptPubKey
I need to send money in one transaction to 2 addresses so that any of them can spend it.
In other words - I need to create same transaction as here
https://www.blocktrail.com/BTC/tx/...
0
votes
1answer
46 views
Under what conditions could a change address immediately send the entire balance to a third-party address?
I have a situation where I sent 1 coin to and address I own and my wallet sent the unspent output to a change address but due to a glitch in the wallet software, that change address doesn't show up in ...
1
vote
4answers
1k views
How to retrieve unspent outputs on mSigna
Due to an upgrade, I had to recreate my wallet (vault) file from scratch - a process that took over a week. During this time, I was able to spend one coin (sending it to blockchain.info) because I ...
1
vote
1answer
505 views
NBitcoin: Get address out of raw block stream
OK, I am sure that this is a really dumb, rookie question, so sorry in advance...
I am trying to read through the blockchain and display the receiving address(es) for all transactions in the chain. (...
1
vote
1answer
270 views
How does Bitcoin know if enough BTC are available for an account to allow a transaction?
Let's consider this simplified blockchain:
BLOCK 108
address ddd111 received 2 BTC by mining block 108
BLOCK 109
address abc123 received 2 BTC by mining block 109
BLOCK 110
address xyz999 created ...
3
votes
1answer
113 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/...
0
votes
1answer
1k views
How blockchain.info calculate the value transacted
Having this address: https://blockchain.info/address/19tqZYnP9youKtbene2FZiZtZyJYaLeBDw
The last transaction says that this address received 0.0236 BTC
But even knowing the value in and the value ...
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.
...
0
votes
1answer
309 views
Why didn't my change come back to my wallet? And where is it now?
I sent a payment for 198.52 mBTC using Electrum. There were two outputs. One for 196.39 mBTC that arrived. There was another output of 2 mBTC that I'm assuming was processed as change. Does anyone ...
0
votes
1answer
1k views
Determine inputs/outputs of a transaction before sending
I am attempting to build a working withdrawal system where users can withdraw funds in BTC. I am required to estimate the fee before allowing them to withdraw to include it in their payment. I was ...
2
votes
1answer
762 views
Parse UTXO of a transaction from chainstate
I'm doing some analysis on the UTXO set by reading from the chainstate database.
I was following the documents given by https://github.com/bitcoin/bitcoin/blob/...
1
vote
1answer
130 views
Whats the minimum recommended output for a faucet-like system? (April 2017)
I am building a software to involve friends. I am testing it.
I made several sendmany transactions with 43478 Satoshi.
I wont be using high fee Bitcoin system man.......
There are better things ...
0
votes
1answer
70 views
Are there other ways to have more than one address involved in a SINGLE transaction input or a SINGLE transaction output?
Full question:
Except for the case of multisignature, are there other ways to have more than one address involved in a SINGLE transaction input or a SINGLE transaction output?
1
vote
1answer
147 views
How can a Bitcoin transaction be used multiple times (If it is so)?
My understanding is that a transaction is a transfer of value between Bitcoin wallets that gets later included in the block chain. So a Bitcoin transaction is used only once in my understanding.
8
votes
2answers
2k views
How to retrieve the from and to wallet addresses of a transaction?
Given a transaction's inputs and outputs, I'd like to be able to extract the wallet address (or addresses) which sent the transaction, and also the address/addresses that will receive the transaction.
...
1
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0answers
32 views
Is it possible to to create an output in a transaction that has a value of zero? [duplicate]
When you create a transaction, can you create outputs that have values of zero? Or does every output have to have a value greater than zero?
