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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
34 views

What happens in a small scale blockchain network?

My main question here is, is this understanding correct or have I misunderstood something? If this question would be better for Reddit then I apologise in advance and I'll move to there. Thanks. ...
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2answers
135 views

Bitcoin sent, confirmed on my end - never received on the other end

I made a purchase and paid using bitcoin. They sent me a link which took me to a coinbase processor. I got the wallet address and sent the money from my Electrum Wallet. I have 157 confirmations, ...
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1answer
45 views

Understanding private keys, public keys, adresses and transactions

I need some claryfication about the things, here it goes: 1. For what I've read, for generate a bitcoin address is following this flow:(General speaking) Private Key (SK) -> Public Key (PK) -> Address ...
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1answer
90 views

Bitcoin sent to invalid address [duplicate]

In this transaction, some bitcoins are sent to bc1qp6k6tux6g3gr3sxw94g9tx4l0cjtu2pt65r6xp which appears to not be a valid bitcoin address. What is bc1qp6k6tux6g3gr3sxw94g9tx4l0cjtu2pt65r6xp ?
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1answer
27 views

How much on-chain activity is to and from exchanges?

Are there any data services which provide metrics that show how much of the transactions on the Bitcoin blockchain are to and from exchanges?
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1answer
30 views

Tracking inventory messages

I am trying to connect to different nodes and keep track of the inventory messages that they send to me. I tried to do this with bitcoinj and libbitcoin, but I didn't make it. The goal is to connect ...
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1answer
42 views

Transaction verification engine

In the Features of Bitcoin Core i found following Line: "Bitcoin Core includes a transaction verification engine" Please define Validation, is Validation = verify or not. Does the Engine verify ...
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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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1answer
55 views

Following SegWit implementation, is BIP-146 signalling and implementation still on the docket?

Is BIP 146, which defines using the low S value, still on the docket to be signalled and implemented given that SegWit fixed the txid malleability issue by moving the witness outside the transaction? ...
3
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1answer
196 views

What does the sequence in a transaction input mean?

Following a transaction input: What is the meaning of the sequence number? What does the 4294967295 tell me?
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2answers
81 views

Someone said they would send me bitcoin, they sent me a exe file, called bitcoin.exe, and it is not running

They said they saved bitcoin in that exe file. How do I access this bitcoin? They also created other bitcoin exe files with different names. Thank you
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1answer
300 views

Sent Bitcoin to my electrum wallet address without hitting request first now it says its confirmed and i have no money after requesting it

Sent Bitcoin to my electrum wallet address without hitting request first now it says its confirmed and i have no money after requesting it after Isent it. Can I still receive my coin
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3answers
45 views

In case of a grouped transaction, how to determine who sent what to whom?

Trying to understand how grouped transactions work, I came accross the following transaction on blockchain.com : There are many senders, and even more receivers. For instance, the first sender on the ...
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0answers
51 views

Stripped segwit data

I have two client Bitcoin, 0.17.0 and 0.12.0 and I want to see the difference between the same transaction. 0.17 has segwit, 0.12 doesn't have. If I do that RPC call in 0.17.0 /bin/bitcoin-cli -...
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0answers
13 views

Public key vs Bitcoin address [duplicate]

As i've read on many websites and papers, the bitcoin address is made by hashing the public key. And i've read that that's done because we don't want the public key to be public until money is spent. ...
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0answers
60 views

How to dissect or decode a BTC transaction?

I used a packet capture to capture the transaction of bitcoin, and I got the following: ...
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2answers
52 views

Logic thread between output folders and input transactions

I'm studying the bitcoin protocol and I don't have very clear things, for example the logical thread that exists between an output transaction and a subsequent input transaction, where that output is ...
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1answer
35 views

Hash rate, transaction and block relationship

I'm aware that when the hash of the block header (block hash) is below the difficulty target, a block is deemed as validated. But because I've never run a bitcoin node before (will soon), I had a ...
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2answers
37 views

Public Addresses: '3' vs '1' in front [Bitcoin]

I just wanted to confirm, is it true that for a bitcoin (public) address it should always have a '1' in front of it. For certain transactions though I see that there is a '3' in front. How is this ...
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1answer
30 views

How and why we need to validate a transaction?

I've starting doing some researches about the Bitcoin protocol and the blockchain. I'm trying to understand all the sections in the Bitcoin white-paper. So far, i couldn't understand what is the ...
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1answer
122 views

18: bad-txns-inputs-spent

I want sendRawtransactoin to the testnet ,bug i got "18: bad-txns-inputs-spent" My input is unspent on the Testnet ,Help ! { "Version": "1", "LockTime": "0", "Vin": [ { ...
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1answer
25 views

How does Internal Keychain exactly work?

I understand that an internal keychain is used to receive a change of payment when I pay someone. For example, I pay $20, but it costs $17, so I get $3. But what I don't understand is how can there ...
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1answer
68 views

Script Null into raw trasaction bitcoin core

I'm developing a parser for bitcoin core and into the alpha test of the parser,I noticed than the script bitcoin core are null and the hash raw transaction exist. An example: for this transaction the ...
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2answers
79 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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2answers
75 views

Checking if a receiver has enough coins

How do miners verify the blockchain transaction history to check if the sender has enough money if the address can be changed at any time?
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2answers
99 views

Is the transaction pool global or local?

I can't find anything in the web about that topic. Do all the miners have one global pool filled with transactions, i. e. Miner 1 takes Transaction 1 into his candidate block, so Transaction 1 won't ...
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2answers
94 views

Script Bitcoin represent number > 16

I'm studying Script language, but I don't understand How can I rappresent the number > 16, for instance 210 I want to do a simple sum OP_10 210 OP_ADD how I have to represent 210? I'm trying with ...
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1answer
44 views

Batching transactions to safe on fees

I have some bitcoin spread across multiple addresses. I would like to move these to different addresses. I've heard about batching and was wondering if it is possible to batch the transaction to ...
2
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0answers
22 views

Script and DER in P2PKH

Im trying to figure out the script and DER In P2PKH, the "first part (scriptsig)" push in stack (<sig><pubK>) because is it DER? Instead the "second part (scriptPubKey)" you can map the ...
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1answer
108 views

Why are only specific transaction types accepted into the mempool?

In the Bitcoin Mainnet, only specific transaction types are accepted: Bitcoin uses a scripting language to specify (and satisfy) the encumbrances, thereby allowing a whole host of transaction types....
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0answers
24 views

Bitcoin was sent out and still hasn't been received

I sent bitcoin out to a segwit address (P2SH) and it split the transactions in 2 but I still haven't seen them delivered in into the wallet
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1answer
27 views

What did Deepbit to make their inputs special on transactions?

It seems Deepbit uses a strange format for it’s transactions on the addresses it owned. For example, in this transaction all inputs but 3 comes from Deepbit. Even Bitcoin core can’t decode addresses ...
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1answer
56 views

How to differentiate between sending and receiving address in blockcypher api result?

I am using BlockCypher's API to get a list of transactions for a bitcoin address. I need to maintain a record of IN and OUT transactions from this address with time and transaction hash. However, I am ...
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0answers
22 views

So there is not way to get my bitcoins back from a scammer? [duplicate]

I made a purchase of 200USD in BTC, and i never receive anything from the seller there is not way to take my btc back?
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0answers
21 views

Unconfirmed Transactions, with low Fees [duplicate]

Is there any way to estimate when a transaction or set of transactions from the same party will be mined? For example, say the company paid a small fee for transactions. How would I estimate the time ...
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0answers
15 views

transaction issue bitcoin core

I sent BTC, bitcoin core says the transaction was made, the money was written off from the account and it is not visible in blockchain explorer. What's the problem, can you tell me?
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1answer
42 views

Data for time a transaction spent in a pool before it got added to a block

Is it possible to collect data for when an transaction was added to the pool to when it was added to the block?
3
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1answer
204 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 ...
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0answers
32 views

Outputs only from bitcoin address

I just want to ask is there any way on how to extract ONLY outputs from particular bitcoin address. I need to export (make a list) on all address that were associated with the outputs from the sender ...
0
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1answer
128 views

Transaction with unparsed input address ? What does it means?

I just see this transaction which is special : one of input address is spending a valid amount… But why is it unparsed ? Why no ScriptSig while stil being valid ? Also what’s the purpose ?
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2answers
87 views

How to search for a transaction using a specifc OPCODE?

I have several OPCODES where I need real worlds examples… However they are rarely used. So how to search and disassemble an existing mined transaction using it ?
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1answer
63 views

What’s the opcode sequence for doing the reverse of Multisig?

With a multisig wallet, several public keys are needed to spend an amount. But how to perform the reverse with time ? I’m talking about this case where Alice performs a transaction where the output ...
2
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1answer
60 views

How to disassemble a bitcoin script?

There are many explorers which allows to dissamble a transaction back into opcodes. But what about scripts which aren’t broadcasted yet like this redeem script :...
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0answers
34 views

my account haked and black mailer give me add of bitcoin [duplicate]

I dont know who is that blackmailaer who send me a mail,,, copy below,,, Sent: Monday, March 25, 2019 8:09 AM To: lubby786 Subject: alqadar : lubby786 I am aware lubby786 is one of your passwords. ...
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1answer
58 views

regarding transaction size in a block

In What are the minimum sizes for transactions and blocks in Bitcoin? The first transaction is set to be 65 bytes long, due to coinbase requirements. What about the second one ? That can be 61 bytes ...
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0answers
76 views

Can't send transaction with sendtoaddress

I'm trying to send some transaction with sendtoaddress method. That is not Bitcoin it self but it's fork. You can see it here https://github.com/PACCommunity/PAC my command looks like this paccoin-...
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1answer
41 views

re : minimum sizes of transactions and blocks

I see there's a similar question provided here: What are the minimum sizes for transactions and blocks in Bitcoin? But the answer provided might be not correct in the light that "A valid transaction ...
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1answer
69 views

Create a Double sha256 block and trandaction

I have same problem whit create a double sha256 of the transactions and blocks with C++. The hash block it is created with the concatenation of these data, version + previusBlock + merkleRoot + ...
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1answer
42 views

LedgerJS - How to P2SH sign multiple transactions from multiple wallets in 1 function call?

First some explanation I have made 2 raw transactions via Electrum using my Nano S Ledger as seed and exported them to .txn files. let rawTx1 = "...
2
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1answer
75 views

What does the prefix of the raw transaction encoding of an exported Electrum transaction file (.txn) mean?

I have exported a testnet transaction into a .txn file: { "hex": "45505446ff0002000000000101c6be24d86ab1ae5b54e7e7905b...", "complete": false, "final": false } However, as explained in ...