Wallet – Get my private key

I want to understand. I do not want to make money from mining.
(I have a server without a GPU)

I have done the following:

I have downloaded, created and installed bitcoin source code from github.

It seems to work because I can interact with bitcoind with the bitcoin-cli command.

I know that this is not a good practice, but I want to "see" my private key.

I've read several documentaries and tutorials and they said I need to generate an address first and then call the dumpprivkey method.

Like this:

$ bitcoin-cli getnewaddress

$ bitcoin-cli dumpprivkey xxxxxxx

I do not understand, but if I repeat this process twice, I get 2 different private keys.

So that's not the private key I'm looking for … What are these private keys?

Many thanks

How does a Lightning transaction work when a party starts without Bitcoin and without a wallet?

Let's say Alice wants to give Bob 1₿ and Bob does not have a regular Blockchain wallet address yet.

The classic example assumes that Bob himself locks Bitcoin in the Blockchain and Alice and Bob both finance a channel between them. But what if Bob does not have Bitcoin yet and Alice wants to give him some about Lightning? Then he could get Bitcoin from Alice, do transactions with other parties on the Lightning Network, and only do a slow expensive Blockchain transaction when he's ready to make a withdrawal.

I know this is possible because I was able to test this with two separate Lightning apps with separate wallets. I have financed a Lightning wallet and opened another app with 0 credits and no regular wallet. I was able to charge the second wallet immediately. But I am not sure what will happen.

I check my Bitcoin wallet after two years and notice that my bitcoin (0.5 bitcoin) is gone

After reviewing my Bitcoin account after two years, there remains 0.00010757 Bitcoin, although I specifically recall that I still have half a Bitcoin. My first thought that somebody stole it somehow. However, after reviewing my transaction history, additional transactions appear to have been made in addition to the previous transactions. Below is an overview of my last three transactions made on CoinBase:

Enter image description here

The three green highlighted transactions were the ones that were about to happen, but I noticed that those other mysterious transactions made next to them also had the same IDs as the intended transactions. The three that are not highlighted add up to what I remembered two years ago. 0.50055605 Bitcoin. I'm not sure what those random transactions are and I'm not sure why my .5 bitcoin just disappeared after two years. I thought the matching IDs would give me a hint, and it seems these random transactions are going to a different address. Should they be sent back to my wallet or something?

Does anyone have any ideas?

Here are the three IDs:

I currently also use the Bitcoin Qt client.

Wallet – My husband has died, I have many codes and words … Help

I will not post any of the codes here, so please do not ask.

So, my husband has a bunch of apps in a folder –

guild Chat
Google Authenticator

He kept going over Tron, etc. I never paid much attention. He gave me codes etc because "if anything ever happened and you did not have them, it would be lost" … again … I did not pay much attention … he was 43 and perfectly healthy.

Now I have his phone, these apps and these codes and no idea what to do.

I can not log into tron ​​wallet … he did not give me a 6-digit PIN.

Do not blow too much, but I'm unaware here.

I suppose, the first step in the wallet?

Question about Send_to_many function of blockchain wallet api

I am using send to many function of blockchain wallet api and am facing a problem.

When up to 20 transactions are completed, I get an error in the terminal

1538652825520 – Error: ERR_PUSHTX

1538652826930 – Error: ERR_PUSHTX

and up to 20 transactions receive confirmation for the block, I can not send another transaction from that wallet and its specific address.

I'd like to use the "sent to many" feature to send unlimited transactions from one wallet to my site users' Bitcoin addresses when they send a payment request from their account.

Please help me in this regard.

Many thanks

bitcoind – Open Source Server for Bitcoin Wallet

For my simple Bitcoin wallet I use the API blockcypher.com.

There is a problem with limiting the number of requests for api, so I need to create my "api blockcypher.com", which is used in my wallet, but I have no idea what structure it has, what information it is in Database stored and how it is structured. Most likely, the blockchain will be scanned there, and a database will be created for each wallet address for a quick call, and a list of hashes may be displayed for each wallet, which is then searched in the blockchain to create a transaction history. That's why I'm looking for an open source project that I can install on my server and use for my project.

Priority in Python, but also other languages ​​are possible.

Wallet – I'm playing an Antminer V9 solo on my local Bitcoind pool. Will I be paid for it?

Your chances up any return with a pool designed just for you.

Pool mining works because pools can accumulate a large amount of hash power from thousands of users. The pool's chance of finding a block is then quite high, so he can use the block reward to pay pro-rata amounts to all of his users.

As JBackzuk's comment says, solo mining is essentially impossible. You will either find the entire block or nothing – no partial releases.