Questions tagged [output]

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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 ...
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17 views

Can anyone help? [duplicate]

My friend said he sent me 0.077 BTC, but i have only received 0.037 BTC. The Bitcoin explorer shows that there are 2 output, one of 0.037 going to my BTC address, another 0.039 went to a different ...
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1answer
74 views

Can a coinbase transaction have a segwit output?

And more generally speaking, are there any restrictions on the output of a coinbase transaction?
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34 views

Optimally determine which transaction spent a transaction output

As it has been discussed before, it is very inneficient to find which transaction has spent a transaction output using bitcoin core alone. I found a way of doing it with an electrumx server running on ...
3
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1answer
60 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?
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2answers
44 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 ...
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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 ...
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0answers
43 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?
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1answer
49 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 <...
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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 ...
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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/...
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2answers
89 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, ...
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1answer
64 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 ...
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1answer
50 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 ...
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1answer
93 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
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1answer
62 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 ...
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1answer
70 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/...
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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 ...
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2answers
52 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.
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2answers
324 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. "...
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2answers
208 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 ...
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1answer
186 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"...
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1answer
115 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 ...
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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 ...
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1answer
67 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: ...
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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 ...
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1answer
332 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?
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1answer
107 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 ...
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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/...
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1answer
290 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 ...
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1answer
871 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 ...
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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?
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1answer
66 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 ...
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1answer
812 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....
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2answers
89 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 ...
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1answer
120 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 ...
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1answer
471 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 ...
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3answers
102 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 ...
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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/...
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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 ...
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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 ...
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1answer
528 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. (...
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1answer
279 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 ...
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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/...
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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 ...
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1answer
128 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. ...
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1answer
310 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 ...
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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 ...
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1answer
788 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/...
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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 ...