Linked Questions

0
votes
1answer
1k views

What is this extra address on blockchain.info? [duplicate]

I sent bitcoins for the first time to my friend. He has an address 1JkqP4qMvVpQApqyH4m9J4LBdqfFacMKSf I chose to send them through my wallet on Bitcoin-QT, but I was interested to check blockchain....
7
votes
1answer
249 views

Why do transactions need to be spend fully? [duplicate]

If I want to send you 75 and I have 100, a transaction of 100 will be made, in which I get 25 back as change. Why is this? See also Change When the output of a transaction is used as the input of ...
2
votes
1answer
220 views

spending some of the coins nullifies address' balance. where does the remainder goes? [duplicate]

I use litecoin-qt, but my guess it'll be the same for Bitcoin or any other crypto coin. I created a new wallet, added an address and received the coins I expected. Then I created another wallet on ...
0
votes
1answer
418 views

blockcypher amount transacted larger than amount transferred [duplicate]

When transferring some bitcoin from coinbase to my hardware wallet, I see on coinbase and on my hardware wallet that the amounts sent and received are about the same (minus a transaction fee), as ...
1
vote
1answer
357 views

strange weird address in transaction after send bitcoin bitcoin-qt [duplicate]

as an example, I have the wallet with address-A (with 10 BTC) If I send 1 BTC to someone (address-B) then in transaction I see address-A > 1 BTC > address-B address-A > 1 BTC > address-C ...
2
votes
2answers
82 views

Bitcoin core wallet - got 0 balance after transaction [duplicate]

I did a test lightning transaction by sending 0.00001 btc to some exchange with using bitcoin core 0.16 (downloaded from bitcoin.org and installed to dedicated pc) and... it took the rest balance of ...
0
votes
1answer
242 views

Why are my bitcoin transactions going to 2 addresses [duplicate]

Here is my transaction: https://blockchain.info/tx/3ddd5a173a73fc82bb0e1eb4361b8c36eb65919e2bfb9ee78fe2c6b5ff3f2307 I only sent .003 BTC to 1 address (35iR3hnFqmkHswRm8PmZgTKxYm7GfucNZJ), but the ...
0
votes
1answer
221 views

btc transaction show all btc moved from wallet [duplicate]

I transfered a small amount of btc from my private wallet with bitcoin core client. When I check blockchain.info I see the transaction with the amount of btc i transferred going to the correct address....
0
votes
1answer
163 views

Erroneous blockchain transactions…more coins than I specified! [duplicate]

This isn't directly related to Bitcoin; rather this is related to Infinitecoin, however the technologies are virtually the same. The other day I sent 2,000 IFC from my wallet (Infinitecoin-QT for ...
0
votes
1answer
116 views

bitcoin listunspent showing an address which does not belong to my wallet [duplicate]

I use bitcoin listunspent to list unspent UTXO, but found one that doesn't match my addresses, so what's that address and where is it from ? bitcoin-cli listunspent [ { "txid": "...
0
votes
1answer
104 views

My balance gets sent back to me [duplicate]

I'm using the blockchain API to make a "send to many transaction". In the recipients I only put other people addresses, but somehow the API sends the remainder of my balance back to me. For example: ...
0
votes
1answer
95 views

Why so many transaction send bitcoins to the sender? [duplicate]

While browsing the blockchain I noticed that there are a lot of transactions that send bitcoins to the sender (most part of the transaction) and a tiny fraction to another address. E.g. this ...
0
votes
1answer
99 views

Unconfirmed transaction, fees paid, seem to be two payments [duplicate]

Transaction id: 601536cadb0055cee97b4ff7969c707bea18745168fe6fedae95f854b2168b11 I made this transaction several hours ago. It seems like it is stuck at being unconfirmed even though I paid a ...
0
votes
1answer
48 views

Double transaction on same hash (transaction ID) - Loosing 0.01 btc each time [duplicate]

Each time I send some btc to another bitcoin wallet there is a second transaction on the same transaction ID (hash) and each times i am loosing around 75 USD. You can see by yourself here; https://...
0
votes
0answers
58 views

Where is the rest of my bitcoin? [duplicate]

I sent bitcoin from one of my wallets to another wallet using one address (output) then this is what I got only a fraction of my bitcoin the bigger amount went to another unknown address to me https:...
0
votes
0answers
45 views

Why UTXO is indivisible [duplicate]

I am new to understanding Bitcoin, but just read this: If an UTXO is larger than the desired value of a transaction, it must still be consumed in its entirety and change must be generated in the ...
1
vote
0answers
44 views

Why the address changes after each transaction? [duplicate]

Could you please help me understand these observations related to Bitcoin transaction? I have setup a brand new wallet from scratch and I sent 0.0246 BTC to it (well, slightly more but after the fees ...
0
votes
0answers
41 views

What is this transaction, I did not make [duplicate]

Can someone explain what has happened here? I mined a block of 50 a while back, then I recently made a payment of .31 BTC. Why is the other 49.69 also in the transaction? This extra transaction ...
0
votes
1answer
30 views

Why is it so that if some bitcoin is spent by any user, the rest of his account's amount should also be spent and paid him back? [duplicate]

I guess this is called Circular spending. Why is it required in the bitcoin protocol?
1
vote
1answer
31 views

My bitcoin change [duplicate]

I am new to this.I have sent out bitcoin over the blockchain before and saw that the hash just took a fee. However the other day it took out over.95 of a bitcoin when wanting to only send 0.04 of a ...
0
votes
0answers
28 views

Upon sending remaining wallet contents emptied? [duplicate]

Three addresses involved in this TX. Address A: My Wallet Address Address B: Recipients Wallet (Coinbase) Address Address C: Unknown! These are not the exact numbers but the transaction went like ...
0
votes
0answers
27 views

why a specific transaction value and it's output address which is sent from a specific IP address, returns from another address to that IP address? [duplicate]

I wrote a code to extract bitcoin output addresses and their values from TX messages of the bitcoin protocol. to test it, I prepare this scenario: first I send a specific bitcoin value(for example A ...
0
votes
1answer
24 views

Why is the value of the input way higher than the output resulting in a second change output? [duplicate]

Background: I'm experimenting on the LTC testnet client. My client has a balance of 0.4 LTC and I sent 0.1 LTC to another wallet address. https://chain.so/tx/LTCTEST/...
1
vote
0answers
21 views

Does Bitcoin transaction has information on remaining bitcoins with the sender? [duplicate]

I am new to Bitcoin and have gone through a couple of video introductions and articles. I have few questions on Bitcoin transactions: 1) I read that the sender needs to encode the numbers of ...
1
vote
0answers
13 views

Transfer amount on blockchain larger than was sent from wallet [duplicate]

I sent some BTC from a hardware wallet last year. The wallet shows a sent amount of 0.09302 BTC but when I look at the transaction id on blockchain.com it shows two amounts. 0.282 BTC unspent and 0....
42
votes
3answers
11k views

Why does Bitcoin send the “change” to a different address?

For example I have an address (A) with 20 BTC and send 9 BTC to address (B). Bitcoin will create a "change" portion of the transaction where the remaining 11 BTC goes to address (C). Why not send ...
23
votes
2answers
5k views

How should you backup your wallet?

How often? Is backing it up once enough? Any best practices to storing the backup?
9
votes
4answers
2k views

Why do outputs need to be spent entirely?

I understand what change is and how it works (and it's analogous to physical money change), but what I don't understand is why this is needed in the first place. Given that this is all computer based,...
5
votes
1answer
12k views

What does change address mean inside Electrum wallet?

I am bit confused with the change label that is inside Electrum Wallet . Can I receive bitcoin if i give this address which are under change label? What is the difference between Receiving and Change ...
6
votes
3answers
19k views

Using dumpprivkey to make a paper backup

I'm just getting started with bitcoin and haven't acquired any significant amount yet, but want to feel relatively secure before I do. And at the moment, my fear of losing bitcoins or a device on ...

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