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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84 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? ...
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1answer
60 views

How to create a transaction input from tx id of UTXO?

I'm in the midst of working this github --> https://github.com/karask/python-bitcoin-utils/blob/master/examples/spend_p2sh_transaction.py Sorry as I'm not that good in this. I would like to ask the ...
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1answer
36 views

how can i coding wallet to build exchange to client withdraw

i want to build a cryptocurrency exchange so my question how is best way and secure way to depositing and withdrawing clients ? should i use api like https://cryptoapis.io or https://www.blockcypher....
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1answer
745 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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0answers
29 views

Using a bitcoin library to create digital signatures in TypeScript/Javascript

I have been trying to sign my transactions with a digital signature for the past few days but seems that libraries in bitcoin, as far as to my knowledge do not provide a simple way to sign the ...
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1answer
44 views

A question about transaction broadcasting and block creation

Let's say we have transaction X and transaction Y. The timestamp of X is chronologically earlier than that of Y. X's spender broadcasts X to the network and the same goes for Y's spender. Let's say ...
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1answer
104 views

json-rpc of bitcoin not working for testnet(curl command)

I am trying this command to get transaction from bitcoin testnet: curl --data-binary '{"jsonrpc": "1.0", "id":"curltest", "method": "gettransaction", "params": ["txId"] }' -H 'content-type: text/...
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1answer
3k views

Unspent/Spent Flag in Blockchain

I just started getting interested in the blockchain a week ago, however there is something I can not just figure out. Regarding the flag "Spent/Unspent" in transactions. I get that we flag "spent" ...
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2answers
6k views

How to make a simple payment with the python-bitcoinlib?

I've been using the bitcoin-python library for making payments from within Python. This worked pretty simple: >>> import bitcoinrpc >>> conn = bitcoinrpc.connect_to_local() >>&...
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1answer
68 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
6k views

What happens if my transaction is not accepted because I did not pay fees?

I was reading this thread about a client fork that does not force transaction fees and I noticed the big red warning saying that some coins might get lost if I am not careful. What does this mean? ...
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1answer
48 views

Why is it not showing?

Someone from blockchain wallet send me some Bitcoin to my jubiter wallet #1BtQi9JmvTvyEBmbGvMQLUCEdUXQyZF21Y and it been two days still havnet receive nothing but it said it's confirmed what going on? ...
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1answer
58 views

Bitcoins stolen during transaction

guys! Recently, I transfered bitcoins from paxful wallet to bitcasino. Usually, it worked. Now, I cannot reach them, it looked to me like they were stuck on the way and I wanted to ask either side ...
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2answers
64 views

In Electrum, how does one watch/poll a wallet for an incoming payments to a certain address via API?

I want to create a simple way to accepting bitcoins on my own, using Electrum. I don't except big volume. I suppose, I'd have at most a handful of incoming payments in the beginning. That is, I ...
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1answer
55 views

I sent bitcoin address to user and he sent payment, I haven't recieved payment after 24hours?

I sent bitcoin address to the user and he sent payment, I haven't received payment after 24hours ? My transactions have been confirmed 120+ times. Here is a link to my transaction: https://...
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2answers
1k views

C# BC, successfully creating and signing raw transaction

First time on stackexchange to ask for help, sorry if i make mistakes (english is not my native language). I try to create a valid raw transaction on C# with bouncycastle and i seems stuck, not able ...
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1answer
279 views

Is it theoretically possible to have an inverted nLockTime?

For example, an nLockTime == 500 prevents a transaction from being included in any blocks before the block 500. Why isn't there a parameter like nExpireTime == 500 that prevented a transaction from ...
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2answers
180 views

API for multiple blockchains

Is there an API to get data for multiple blockchains? Most blockchain explorers already offer an API but I'd like to be able to get information for different blockchains through the same API.
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10answers
8k views

Where can I get email notifications on any transactions to/from an address I do not control?

There was at least one site that did this I remember.
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2answers
435 views

Sending BTC using Seed Hex or mnemonic

I’m interested in sending BTC from wallet to another and probably automate it through some libraries. I have a question: if I have a seed hex or 12 words I can generate all my wallets (addresses, ...
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1answer
44 views

Cannot Find Transaction from Blockchain Explorer

I just withdrew some Bitcoin (BTC) from FreeBitco.in to this address: 1FCFLjBDk3BGbp2vtEPRNLcbGisZRUWfbV My withdrawal was confirmed by the website an hour agao, and I received an email from FreeBitco....
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1answer
249 views

How do I double SHA-256 the header of block #59,500?

I'm not sure how to combine all of this information. https://blockchain.info/block/00000000096af43105123c499521e1d131d172e7e1bf2ed0843290a921f1f6a7 Version 1 Time Bits 470771548 (is this the right ...
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2answers
1k views

P2sh redeem script hash

What are the contents of a redeem script hash in a p2sh transaction? From what i read it's similar to the pubkey script but does it only contain the receiver's address?
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2answers
46 views

How do I withdraw from an address

I made a Crypto purchase from Shapeshift yesterday, which was fulfilled by one of their partners called BANXA. I just received an email saying "Your order has been fulfilled and you will receive ...
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2answers
59 views

How can I get all transaction for a specific address using Nbitcoin?

How can I get all transactions for a specific address using Nbitcoin? This would be really helpful Punnoose
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3answers
148 views

Bitcoind does not like ECDSA (r, s) pair produced by OpenSSL

I am writing transactions manually and have stumbled across a rather bizarre situation. Only one in a few of the transactions I broadcast to bitcoind is accepted, otherwise I get a REJECT_NONSTANDARD ...
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1answer
257 views

Can we construct a UTXO which is spendable only via proof of work?

Do the current Bitcoin opcodes and transaction size limit allow constructing a UTXO which is only spendable if a specified amount of work has been performed? So the spender, would provide a nonce as ...
10
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2answers
594 views

Transaction overriding in lightning network

I'm reading the lightning network whitepaper, and at some point it states this: Therefore, it is possible in bitcoin to devise a bitcoin script whereby all old transactions are invalidated, and ...
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3answers
1k views

By byte size and number of inputs/outputs, what are the largest transactions in the block chain so far?

Disregarding value, but instead going by size in the protocol, what are the largest transactions so far in the history of Bitcoin, in terms of: byte size number of inputs ("vin") number of outputs ("...
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1answer
337 views

find out total balance on MainAccount

I don't understand receiving address usage at https://blockchain.info/api/api_receive As I understand it it should work like this: MainAccount |--generatedReceivingAddress1 (then someone send btc and ...
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2answers
605 views

Private Blockchain Key Purchase

Please anyone explain as IQOPTION is telling me that I have to purchase a $700 private key to get access to my BTC Blockchian wallet once they wired my Finds in to this wallet?? anyone please have an ...
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1answer
361 views

Sent bitcoins to a suspicious address!

I just may have been scammed via a phishing link. The transaction is verified but not confirmed, I'm new to bitcoins, as you can probably tell. From the quick bit of research I've done there is ...
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1answer
788 views

Bitcoin transaction graph

I am trying to make bitcoin transaction graph, but I am not sure how to go about it. I have extracted the necessary data from blockchain like the sender, receiver, amount of bitcoins sent, transaction ...
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1answer
31 views

Strange BTC rate behavior when buying bitcoins

I have decided to buy some bitcoins using the Bitcoin.com wallet app and I have just received the invoice for my transaction of 1000 EUR to BTC. The rate of the BTC for the last days is always around ...
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2answers
203 views

Generate P2SH-P2WSH

I want to generate P2SH-P2WSH with script P2PKH. My public key is 027712968e8f2f9dfa79abe10940a3d915a0c95a0b97750881e6201acf2b66da97 SHA256 and RIPEMD160 of Public key ---------- Witness Script ...
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2answers
60 views

inquiry about Transaction

I sent 0.027 BTC over a day ago with the transaction number 254d1352749e9a18effecbd6d340479d75ca4500e2da8eda1a77f51634ee3f6f The person i sent to still says, they have not received anything yet the ...
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2answers
40 views

How to raise the bad-txns-vout-negative error?

I wanted to replicate the bad-txns-vout-negative error scenario. I tried the following but getting 'Amount out of range' only: Here is the command i tried: bitcoin-cli -named createrawtransaction ...
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2answers
155 views

Buy coins using a australian bank account from Germany

I am German living in Germany but do own an Australian bank account. I would like to use that money to buy bitcoins but somehow am not able to at the big exchange markets. Whenever I identify myself ...
0
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1answer
122 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
21 views

Sign transaction externally

I create a transaction with inputs from a given address / public key without signatures. Every input needs to be signed. I use a different method to generate the signatures so I can't provide a ...
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3answers
829 views

What's the most efficient way to create a raw transaction with a specific fee rate?

There seems to be a chicken and egg problem when it comes to creating a transaction that has a specific fee rate (sat/kW). In order to set a specific fee rate, you need to know what the total weight ...
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2answers
30 views

Is the first input in a transaction always the sender's?

I'm trying to figure out what the input address is from a transaction with multiple inputs. Can it safely be said that the first input in the inputs of the transaction is the sender's?
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6answers
18k views

What is relation between scriptSig and scriptPubKey?

Scenario: A is sending 1 BTC to B. scriptSig appears in the Input Script. scriptSig = <sig> <pubKey> Here, public key is the Public Key of the sender, A. (this is the public key ...
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1answer
2k views

Transaction too large error

I have over 1400 small transactions in my wallet that add up to a little over 0.2 BTC. I am trying to send them, but keep getting a transaction too large error. I have tried to set a custom ...
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2answers
53 views

Link an account to another one

Is it possible to have an account which is linked to another. For example i have an account with 0 address and i have another one with 1 address, I want to if someone send bitcoin to 1, the bitcoin go ...
0
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1answer
39 views

Buy Order to Exchange

I am looking for a tool with which to place a purchase order which is higher than the current price. As an an example. Wallet Exchange: $ 100 Course NEO: 50 dollars Order: Buy at $ 54 Does anyone ...
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1answer
441 views

Using CoreBitcoin in Swift to create raw transaction

I am new to coding, and only know swift, obj-C is still foreign to me. I have a functioning wallet but for now am relying on BlockCypher API to build a transaction which I do NOT want to do. Can ...
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1answer
2k views

How to send bitcoins without the bitcoin client in PHP

Is there a way to send bitcoins programmatically without the bitcoin client using PHP?
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2answers
4k views

Simple Address check via API

So I have a wallet with thousands of addresses, I want to know how can I check the blockchain whether or not a transaction has been made to one(or another) of the addresses?
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1answer
115 views

Filter transactions by time on a given address

Is there an API that will list all transactions made on a given wallet address with the ability to filter by date? I prefer nodejs, but open to other suggestions.

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