Linked Questions

2
votes
1answer
566 views

First bitcoin payment, sent X BTC, but transaction amount on blockchain.info shows as more than 2X?

I sent 0.01047 BTC through coinpayments.net using electrum. First I selected minimum fee option, then I went back and selected one level higher as the fee tier. My electrum wallet and blockexplorer....
-3
votes
2answers
486 views

Will I get my bitcoins have I been scammed?

Okay, I'm wondering what's going on here. I recently synced my wallet after ordering some bitcoins, but I never received them. The guy who sent them to me, sent me the blockchain address. So, I don't ...
0
votes
1answer
236 views

Am I being hacked, can I prevent it?

I have just sent bitcoins from one account of mine to another, and after I sent it I checked on blockchain.info to get updated about confirmation. There, I noticed something peculiar, it said that I ...
1
vote
1answer
370 views

what is the meaning of Segwit receiving address and segwit change address ..?

What is the meaning of different type used in bitgo api like bellow : Url : https://bitgo.github.io/bitgo-docs/?javascript#add-wallet m/0/0/0/0 (which is also the ID used to refer to a wallet in ...
0
votes
2answers
103 views

Can two or more transactions sent from the same address be mined in the same block in Bitcoin's blockchain?

Imagine a person Bob has 10 bitcoins in his wallet. He wants to send 5 bitcoins to Alice and another 5 bitcoins to Uncle Tom simultaneously (in separate transactions). Will both Bob's transactions be ...
0
votes
1answer
69 views

How do miners determine if a wallet has sufficient funds

I have ready about 10 posts that are similar and none of them seem to answer my question so any help is appreciated. My question is how to miners technically determine if a "wallets" has the "...
1
vote
1answer
78 views

How to read a transaction from a block? Who paid whom?

I'd like to know how to read a 'transaction', so if we take an example of this transaction (which comes from block #520156) it's easy to spot that 'th' paid 'U8' 0.005BTC and '9E' paid 'Y5' 0.013BTC. ...
1
vote
1answer
97 views

Why did the remaining money go to another address?

I'll try to be short. I gifted 1 BTC to a friend several months ago. She is a completely non-technical person. She tried to send a small fraction of that 1 BTC to her brother, and either she seriously ...
0
votes
1answer
108 views

Bitcoin Address Workflow on Spend Leftovers

I need to understand the correct Bitcoin address workflow for transactions. I created an address a while back with a common wallet and sent some coin there. The address is at segwit m/49'/0'/0'/0/0. I ...
1
vote
1answer
107 views

How would this double spend attack be prevented?

I know, that a user cannot create a fork in the chain. Also, it is said, that since every transaction is publicly announced, any attempt of double-spend on the same chain would be rejected as the ...
0
votes
1answer
136 views

Is there a way to get all addresses from an Wallet?

If I was to search the blockchain for address X, then I see that it has two inputs in a transaction, X and Y. I can safely assume that X and Y are owned by the same person? Now if I look at all of ...
1
vote
1answer
85 views

Limit the amount of change addresses

Is it possible to limit the amount of change addresses used by electrum (and other wallets)? I understand that change addresses will increase the level of privacy for the current user but it will ...
0
votes
1answer
64 views

Why do self-loops exist in the bitcoin transaction graph?

I have obtained bitcoin data from block explorer and created the transaction graph. The graph consists of millions of nodes and edges. i wrote a query that creates a relationship from source address ...
0
votes
1answer
96 views

2 mBTC that was outputted as change in a transaction I just sent didn't come back to my wallet

Hi I'm new to this so may be asking a stupid question. I just sent a payment for 198.52 mBTC. There were two outputs. One for 196.39 mBTC that arrived. There was another output of 2 mBTC that didn't ...
1
vote
1answer
66 views

How can I use a large input if the difference of the outputs and the inputs goes to the fee?

I'm confused by how exactly Bitcoin transaction are calculated. A transaction contains inputs and outputs, and if its inputs exceed its outputs the difference is deemed as the transaction fee. So, ...

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