Transactions are signed messages regarding the transfer or generation of bitcoins. They are broadcasted through the network and, if accepted, integrated in the blockchain.

learn more… | top users | synonyms (2)

1
vote
0answers
5 views

Bitcoin sending transaction error

I recently bought some Bitcoins(around 0.5) and sent some to a friend. He got them direct. Today I wanted to transfer some more but it didn't work. Every transaction was an error, besides one very ...
1
vote
1answer
49 views

Why do websites such as satoshimines and bustabit generate new addresses every time?

Why a single address for each user not enough? Can't they just verify the incoming transactions? If I want to mimic this practice, how can I generate unlimited addresses, from which transactions can ...
3
votes
1answer
34 views

Streaming API for confirmed transactions?

Is there an API that makes streams transactions as they're confirmed? Everything I can find seems to just be putting out unconfirmed transactions in realtime, rather than waiting for confirmation. To ...
0
votes
1answer
22 views

transactions for future use

If bitcoins can be stolen via hacking, what's there to stop these already occurring events and bitcoins from falling right back into the hands of power. I mean bitcoins are capable of being ...
1
vote
1answer
29 views

getting bitcoin address of blk*.dat files

I know that getting the address from the blk*.dat files is discussed a lot of times. But I don't get it why? When I have the raw scriptSig I can encode it and get the bitcoin address or not? E.g. the ...
0
votes
2answers
71 views

I have a stuck transaction (2 days already) [duplicate]

I have this transaction : https://blockchain.info/tx/8fdb3e8a0a33b3d1721b6ef7c1c2608b1e1a8aacd8857e22287b120c09ee988a I understand it's stuck because of the low value i spended but look at the fee. ...
5
votes
1answer
36 views

Sharing BIP32 extended master public key

I have User A who generates BIP32 Master Public and Private Keys. It shares the Master Public Key with User B. Using the Master Public Key User B generates Address of A and Issues bitcoins from ...
3
votes
2answers
107 views

Is it possible to combine two separate transactions into one transaction by only using their signatures?

I have two valid txs and two valid signatures for those txs. Right now they look like: 1) A -> B 2) C -> D A and C are inputs & B and D are outputs. I want to be able to combine them ...
4
votes
1answer
44 views

Payment with BTC not completely transferred

What happens if I start a new transaction with founds from a transaction which isn't 100% complete? (let's say, 2/3 of the green dot, but the sum is counted as full by my wallet - BTC app for Android) ...
0
votes
0answers
19 views

Get transaction details using bitcoinj library

I am trying to develop an application using bitcoinj library. I want to get the bitcoin transaction details. The details, that I want to extract from a transaction includes the following. 1) Who ...
3
votes
1answer
38 views

Would moving a transaction from an old block to a new one allow more pruning?

At Pruning the branches in Merkle Tree Nick ODell writes "A leaf (transaction) can be pruned when all of its outputs have been spent." So I was thinking that if a transaction is one of the last few in ...
3
votes
2answers
36 views

Wasted satoshi due to transaction fees

Say I have a wallet containing 1000 satoshi, and I want to transfer this to another wallet, but it doesn't cover the transaction fee, do I just waste it? I don't have the private key to the wallet ...
4
votes
1answer
29 views

Can you search a transaction by quantity?

I have been looking and I cant figure out a way to find a recent transaction by quantity. Let's say I know someone sent "x" amount of BTC but I don't know who was the sender nor the receiver, this ...
2
votes
1answer
19 views

Transfer Not Sent to wallet

I request payment to this address: 1MJW5uSqvsdey6DnAsMo21WZ6bhehaVtKq but still not yet to the wallet. https://blockchain.info/address/1MJW5uSqvsdey6DnAsMo21WZ6bhehaVtKq Why this happen how to get ...
0
votes
1answer
22 views

Will Bitcoin remember unperformed transactions?

Let's say I transfer 0.05 BTC from 1 input to 1 output and don't pay a fee. If there are 6 blocks per hour, this means that my input has to be 369 hours (about 15 days) old so no fee is required. ...
5
votes
2answers
69 views

Double Spending before confirmation

What's to prevent someone from using bitcoin at a store like subway and double spending to buy the sandwich before a confirmation is made? Since subway obviously isn't going to wait for a ...
0
votes
1answer
56 views

How to pratically doublespend bitcoins?

I tried to put bitcoins into an p2p exchange with bitcoin-qt. I added a to small transaction fee, so the coins are now stuck as "Unconfirmed". The offer from the exchange is overdue, so all that will ...
1
vote
1answer
23 views

How does tx fee calculation work when txin and txout are similar amounts?

This website has an example called "When Too Much is Not Enough" on its main page. I'll quote it an case this is changed in the future: Suppose you have only two outputs in your wallet, worth 1 ...
-4
votes
0answers
39 views

transfer bitcoin to my account

I wont to transfer bitcoin to my account in one day via 3rd party if possible. I would like to put money into my bitcoin wallet with out waiting a week how able to do that transaction please.
2
votes
0answers
10 views

Code change to create TX for send between local addresses

Need to create a customised client to be able to create TXs on the blockchain when sending between local addresses. This can be done with Coin Control but needs to be done with a headless daemon. I'm ...
0
votes
2answers
71 views

Bitcoins transactions over 1000 confirmations, but amount remains red

I'm newbee, I did several payments about 14 days ago. There are 618 confirmations, but the amount remains red and nothing happens. See the example of my blockchain wallet and 4 more examples. The ...
0
votes
0answers
24 views

Using bitcoin to transfer funds from credit card to bank account while out of the country: logistics

I am new to bitcoin and am planning on purchasing a small amount as part of a process of moving funds around my accounts. Specifically, I would like to charge two credit cards (one for 3750, the ...
5
votes
2answers
40 views

Why is the change address for a transaction the same as the originator address?

I was under the impression that if address abc has 100 BTC assigned to it, and it pays address def 20 BTC, 80 BTC will be transferred from abc to a new address ghi. But in this transaction: ...
1
vote
1answer
25 views

How to read blockchain.info transactions in the blockchain?

so i'm learning about bitcoin, and i've purchased overpriced bitcoin for 1USD. the flow was as follow: i've created an account in https://localbitcoins.com and contacted a seller. the seller sent me ...
0
votes
1answer
75 views

Restrict the Bitcoin usage only during a particular period

I would like to know if its possible to use a Bitcoin at present in the following scenario. When I send a Bitcoin to an another user,I set certain parameters on the Bitcoin, like it can only be used ...
1
vote
2answers
64 views

can man in the middle change transaction before its broadcast?

i'm very new to bitcoins (started learning it today). i hope i get the question right: i understand when a transaction is created, using my private key i sign the transaction, but i also provide the ...
0
votes
1answer
27 views

How to use JSON-RPC in C++ in Linux?

Which library I must use for JSON? Where is RPC call example ? How to use RPC of bitcoind or bitcoin-cli? or better Electrum API to get all new (maybe pending) transactions which appears in Bitcoin ...
0
votes
2answers
45 views

Is blockchain necessary?

I am interested in developing a crypto-currency (who isn't), but I have no interest in the blockchain mining aspect of it. I want to program one that emits the coins when someone has performed some ...
2
votes
1answer
31 views

How to apply RBF (Replace-by-Fee)

I got a stuck transaction and would like to clear this. I found many information about RBF (Replace-by-Fee) how it works etc. So i think this might be the best option to get my transaction going. ...
2
votes
1answer
55 views

Please help. BTC has left Armory wallet and shows as gray, but says “Not in the blockchain yet”

I sent 1.5BTC in the usual way from my Armory wallet, but the transaction shows in gray as if it is still pending. When I click more details it says "Not in the blockchain yet". If I search for the ...
1
vote
1answer
104 views

I bought 1BTC and the transaction was instantaneously, how?

So, I went to localbitcoin, I met a random guy at a Starbucks gave him the money and he transfered 1BTC with his cellphone to my blockchain.info account. I thought I would have to wait at very least ...
4
votes
1answer
97 views

Can a transaction have more than one recipient?

I am quite new to Bitcoin. I have a doubt. Let's say I, person A, have 1 bitcoin. I want to send 0.5 BTC to person B and 0.5 BTC to person C in a single transaction. Is it possible to do so within ...
0
votes
0answers
35 views

Transaction ID not found- Status still unconfirmed

I tried to make a transaction back to my bitstamp account on 23.02.2016 but it has not been received. the Transaction ID from Bitcoin Core is the following: ...
0
votes
0answers
44 views

What would need to happen for someone to be able to steal my Bitcoin balance?

As the brute force way is mathematically nearly impossible, I ask about the way of obtaining those keys. How can an attacker obtain your keys, and how can you protect yourself? For example, mining ...
1
vote
0answers
50 views

To what end do miners typically put “nonstandard” transactions

I'm reading Franco's book "Understanding Bitcoin" and greatly enjoying it. Simultaneously I'm tailing a node log file. I notice the plethora of "nonstandard transaction: non-final"s. Franco says ...
3
votes
1answer
59 views

How does bitcoin handle extreme transaction volume?

What would happen if the amount of active Bitcoin users grows up enough so that the average rate at which transactions are created becomes faster than the average rate at which transactions are ...
0
votes
1answer
48 views

My first transaction using Bitcoin-Qt

I used Bitcoin-qt (Bitcoin Core) on desktop to create a wallet a while ago and I'm a little confused how it works. I never fully "synchronized with the network" I'm assuming that means download the ...
1
vote
1answer
47 views

Is it possible to Send the total balance of Bitcoin from the Wallet using rpc without having to specify the exact amount?

I know we can send coins using the move, sendtoaddress and sendfrom commands from the console or commandline. However these commands require to specify an "exact" amount, meaning you need to check ...
3
votes
1answer
72 views

Why are all redeem scripts standard, but only a few pubkey scripts?

As I understand it, only transactions with pubkey scripts conforming to a certain pattern are considered "standard" and are relayed, however a script is also considered standard regardless of its ...
0
votes
3answers
94 views

How Bitcoin handles addresses collisions?

Since the addresses are hashes of a public portion of a public/private ECDSA keypair, what would happen to two different people with different keys that hashes into the same address? How would ...
2
votes
1answer
55 views

Second, Third, Etc Confirmations taking a long time, why?

I have sent a bitcoin transaction of 0.18, you can see it here. https://live.blockcypher.com/btc/tx/22bacef7d4fb78e4e90cd04540daad257a39cb4ab4510f9e0efe5a88efaf0f87/ I included a fee of 0.002 even ...
0
votes
1answer
35 views

Electrum and public note

Is it possible to attach a public note to transaction using Electrum client, if yes so how ?
3
votes
1answer
35 views

When I use the “send_many()” function in the blockchain.info api, have I to pay the fee only once or for each?

The blockchain.info api looks like this: The link is: https://github.com/blockchain/api-v1-client-python/blob/master/docs/wallet.md But when I give a fee like this: ...
1
vote
1answer
67 views

Transaction ID not found- Status still unconfirmed after a month?

I did a transaction back to my bitstamp account on 23.02.2016 but it has not been received. Transaction ID: 1886e0c49ba43a842043fc84358a05d3faf69468c1547e1d2ef3e030b929f834 I do have the blockchain ...
1
vote
2answers
84 views

How can I send thousands of small amounts (10'000 sat.) to bitcoin wallets without paying to much fees?

I want to make a faucet. But my problem is that I don't know how I can make my payouts. I would have a lot of little amounts (like 10'000 satoshis) to pay. Is there an efficient way of doing thousands ...
0
votes
2answers
121 views

Safely buying bitcoins in person

What is the safest way to exchange bitcoin for cash in person. Obviously meet somewhere public but other then that how should an exchange proceed? What steps should be taken to ensure both parties ...
0
votes
1answer
97 views

Blockchain.info send may transactions API v2

I'm currently using v2 of Blockchain.info's API and am wanting to utilise "Send Many Transaction" and am having some issues. I have 1 wallet with many addresses, I am trying to send 2 transactions ...
1
vote
1answer
55 views

How are bitcoins reassigned?

How are bitcoins reassigned, that is, what about a transaction makes a "coin" no longer usable by the sender, and makes it usable by the recipient? Alice wants to send bitcoins to Bob. Alice's wallet ...
0
votes
1answer
34 views

Multiple addresses in transaction

I am a total noob, so this might be a stupid question. I was looking at this transaction, and saw multiple inputs and outputs. ...
0
votes
1answer
36 views

When I pay, how is my balance checked, if I use different address every time?

I know there are quite similar questions, but none have addressed my issue. Let's say I use Electrum wallet, that generates addresses & keypairs from seed. So for every next transaction I use ...