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1answer
31 views

Understand how wallet works

My goal is to understand the bitcoin internals. Here is what i have done: I have downloaded, maked and installed bitcoin sourcecode from github. I have launched the bitcoind daemon. Everything ...
-1
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0answers
54 views

Please help me get back my bitcoin

Please I need serious help ,I sent a bitcoin to an address only to wake up to see a different address ,instead of being sent it shows transferred to a zero recipient ,please I need to rectify this
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0answers
20 views

How do lightweight nodes and SPV wallets calculate balances?

Can they do it? Or they "talk" to a full node for that purpose and are used only for mining purposes? Thanks in advance for your answers.
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1answer
25 views

bitcoin node startup daemon with created wallet

When I restart the Bitcoin node, I would like to load the wallet I created in the "wallets" subdirectory. bitcoin-cli createwallet "1" bitcoin-cli listwallets -> result : "", "1" bitcoin-cli -testnet ...
1
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2answers
22 views

Organization to keep track of wrongfully obtained bitcoins

I am curious whether there are any organizations that are actively trying to monitor bitcoins from illegal sources. I understand that 'when done properly' you can make bitcoins practically ...
1
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1answer
21 views

How does a Lightning transaction work if one party starts with no Bitcoin and no wallet?

Let's say Alice wants to give Bob 1₿, and Bob doesn't have a regular blockchain wallet address yet. The classic example assumes that Bob is locking some Bitcoin of his own on the blockchain, and ...
0
votes
1answer
20 views

QR Scan “Unrecognized format” mycelium "Mastering Bitcoin'

Noobie here. In Ch. 2 of Antonopoulos' "Mastering Bitcoin", I try to scan figure 2-2 (per his instruction) using a recently installed Mycelium on my Android. Why do I keep getting "Unrecognized ...
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0answers
24 views

Bitstamp and deposit address

I have a Bitstamp account and when I try to use the API for bitcoin deposit I discover that there is a unique address for my bitcoin deposit. It is safe in term of address reuse consideration ? Here ...
1
vote
1answer
19 views

A question about Proof-of-Work(PoW)

I will describe my question using an example. Let's say the network is working on adding block #100 to the blockchain. An attacker recreates block #99 with a combination of transactions that are "...
0
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0answers
20 views

Can Omni transaction contain multiple transfers?

I want to create a transaction for USDT on Bitcoin blockchain that sends 99% of USDT balance to user A and 1% to service as a fee. I am checking what Omni layer is capable of and I kinda got how it ...
2
votes
1answer
20 views

How run c-lightning with the local node bitcoin

I have a bitcoin-core-18.0 with on my linux mint, and I don't have downloaded the bitcoin with the ppa but I downloaded the official zip directory on site bitcoin. Now my question is, c-lightning ...
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1answer
57 views

Transferred bitcoin to an address and it showing transferred to another address instead of sent ,and it showing zero recipient

I transferred bitcoin to a friend yesterday and it showed transferred this morning to an unknown address and it showing zero recipient a
1
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1answer
24 views

Transaction malleability

I have been reading about transaction malleability a lot still doesn't make sense to me. Is there a script I can use to test it out ? If the transaction that is malleable is changed by the attack, how ...
1
vote
1answer
32 views

Save state to the disk at abrupt bitcoind shutdowns

I have a bitcoind running, and after new blocks being synced, sometimes I kill it(without stop command). Next time, when I start it, it goes through already synced blocks. Is there any way to force ...
0
votes
1answer
25 views

using rpccookiefile instead of username and password for antminers

I mine using username and password at the moment but as bitcoin core is changing over to rpccookiefile. My question is, if i use rpccookiefile how do i point my antminers to my local bitcoind 'pool' ...
0
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0answers
24 views

Bitcoin Core Question, Initialization Vector

I am reviewing Bitcoin Core source code. I am following the code which states take a double sha 256 of the public key to get the IV and use the master key for the encryption key for encrypted wallet....
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4answers
41 views

A question about full nodes, lightweight nodes and merkle trees

What is the purpose of full nodes storing merkle roots? Why don't they save the transactions only? The hashes could be calculated only when a lightnode asks for them and the merkle roots could be ...
0
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0answers
24 views

What is the complete process and purpose of a block validation using merkle trees?

I need the whole details please. Like does that happen only in the current block? Or at past blocks do? And how exactly does this happen? Do full nodes send the proper hashes and then a local ...
0
votes
1answer
15 views

Question about Merkle trees and blocks

There is something I cannot understand about Merkle trees. I understand how they are calculated and etc., but I cannot understand how they are used on a blockchain. If a block stores only the Merkle ...
0
votes
1answer
17 views

bitcoin core problem payment

I downloading bitcoin core on my computer. But my computer is full, and downloading is not complete. I made transfer my bitcoin to URI on bitcoin core, which downloading. But nothing came and I didn't ...
0
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0answers
15 views

difference between extended public-key(xPub) and public-key [duplicate]

I wanted to know the differences between the public key and extended public key and their use cases.
0
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0answers
41 views

Checking my bitcoin wallet after two years I find that my bitcoin (0.5 bitcoin) is gone [duplicate]

After checking my bitcoin account after two years, 0.00010757 of a bitcoin remains even though I explicitly remember having half a bitcoin left. My first thought someone somehow stole it. But after ...
0
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2answers
116 views

My husband died, I have lots of codes and words… help

I will not post any of the codes here so please don't ask. So, my husband has a number of apps in a folder - Tronwallet Telegram Guildchat Coinbase Biance Google authenticator He kept going on ...
1
vote
1answer
24 views

How do I install a second independent C-lightning node on the same machine as one with an already operational node?

I have followed the steps to install a C-lightning node on my Ubuntu machine. I wanted to know if I could install configure and make a second node on the same machine where both could run in tandem?
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0answers
7 views

How to decode Rootstock (RSK) input data to a transaction?

Consider this transaction: 0x528c4eef2f0dbcd95c5928cb573552b263bc13f26da2f8ef258a51ee6e755cdf result": { "hash": "0x528c4eef2f0dbcd95c5928cb573552b263bc13f26da2f8ef258a51ee6e755cdf", "nonce": "...
0
votes
0answers
13 views

Using scantxouset method on bitcoind JSON RPC

BitcoinRPC class from here (ruby): https://en.bitcoin.it/wiki/API_reference_(JSON-RPC) btc = BitcoinRPC.new("http://rpcuser:rpcpassword@127.0.0.1:18332") btc.getaddress => "...
1
vote
1answer
61 views

Is the “recovery phrase” generated by a wallet app platform independent?

I recently started a wallet with Coinbase Wallet, and I was asked to backup a 12 word "recovery phrase" that is supposed to be able to recover my wallet in the event that I delete the app from my ...
1
vote
1answer
25 views

Setting up and running multiple C-lightning nodes on same machine

I have successfully setup a C-lightning node on ubuntu using the tutorial. The problem I am having is trying to setup a second node that DOESN'T utilize the same .lightning hidden directory to run ...
0
votes
2answers
34 views

How to get total transactions on the network with RPC

I have seen no concrete answer to this question anywhere. I assume it is possible to get the total number of successful transactions on the bitcoin network using bitcoin-cli command because most ...
1
vote
1answer
69 views

Why is the 'Estimated BTC Transacted' referring to just one of the multiple outputs?

I recently started learning about bitcoins and came by this transaction. Here there are multiple outputs so if we consider one of them to be the change received by the sender then why is the '...
4
votes
1answer
35 views

Which parameters in the Bitcoin Core config file need to be set correctly prior to IBD?

The majority of the parameters in the Bitcoin Core config file can be changed during or after IBD (Initial Blockchain Download) with no complications. However, there are some parameters in the config ...
1
vote
1answer
140 views

c-lightning: single tx multi-channel open stuck on CHANNELD_AWAITING_LOCKIN:We've confirmed funding, they haven't yet

I've tried to open multiple Lightning Network channels using a single Bitcoin transaction, with these steps: For every peer in PEERS (n=25) run: lightning-cli connect ${peer} lightning-cli ...
1
vote
1answer
82 views

How does BIP 39 mnemonic work?

As I already understood the mnemonics are the private key separated in 12 words which joined together in the very same order produces the private key. How are mnemonics generated? Why Ledger ...
1
vote
2answers
32 views

What happens when the last added block in a blockchain is corrupted?

What happens when the last added block in a blockchain is corrupted? Is it still possible for the block to be accepted by a majority of the miners?
1
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2answers
43 views

How does storing the witness outside of the block prevent malleability?

I have some question on how segregated witness work. I'm reading this post and in the answer exist this phrase Since signature data (witness data) is stored outside the transaction (and outside ...
1
vote
2answers
29 views

Transaction from bitcoin core is different from the explorer

In tx 3a4a7087d4ece4503948b33aa77c807cda770575d229cbcb7dd8336ffa77445a the unique input is 1387e35f2c65f6664e15a98a43b7a70831e636635876a7154c99f38d89a9f795 with index vout = 1. When I request this tx ...
4
votes
1answer
315 views

Syncing bitcoin node with multiple cores

I'm syncing my node on 32 CPUs, and it's super slow. Obviously, syncing doesn't go in parallel. I wonder if there is any fundamental obstacle for "divide and conquer" way of doing it. So let's say ...
0
votes
1answer
31 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? ...
0
votes
0answers
16 views

Can funds sent to wrong/fraud wallet address be recovered? [duplicate]

I sent $800 to a wallet address sent to me by a "trading broker" but just scammed me out of my money! :( Is there ANY way my funds could be refunded back to my address at all? PLEASE HELP!
0
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2answers
37 views

Is it fraud? Would banks ask for fees through bitcoin?

So a man came to me on Instagram saying that he wanted to buy old money specifically from Hong Kong for a museum in Philadelphia, and that he would pay me good money for my old coins and bills, then ...
3
votes
2answers
36 views

Why don't nodes resume all existing outbound connections at restart?

The Erebus attack can, according to the authors, be accelerated by causing the victim node to reboot* at opportune moments. This is because the node will pick new outbound peers from a list that's ...
0
votes
0answers
31 views

Bitcoin Transaction Generation: Signature Verification Error

I have the following raw transaction (basic P2PKH) which I am trying to send to the Bitcoin Testnet 3: ...
0
votes
1answer
16 views

How did I get a Test net

I was downloading bitcoin for the first time and during the last 3 minutes while doing some other work on my computer, something about an interruption flashed and then it looked as if nothing had ever ...
1
vote
1answer
47 views

How do block explorer sites show information that is not available on Bitcoin Core?

As I understood in the following post How to get unspents for a specified bitcoin address?, we should use listunspent only on addresses that belong to our own wallet otherwise will return blank. But ...
0
votes
0answers
26 views

Can not connect to rpc server bitcoind 0.16

I have 2 server v0.18 and 0.16. They're nearly same config but I can't connect to v0.16 server via RPC though using command on it is still well eg bitcoin-cli -info. I have searched few configs and ...
1
vote
1answer
30 views

Fetch UTXO Bitcoin to address created by rpc importprivkey without rescan like other api

For few reasons, I must use rpc node to handle wallet at this time. In the near future, I will change the flow to use library to create addreses, store privatekey at database and create raw ...
1
vote
1answer
33 views

What is differences of bitcoin mempool anchestor and descendant?

is there a specific explanation about the differences between mempool anchestor dan descendants? there are RPC commmand for "getmempoolanchestors" and "getmempooldescendents". What is mempool ...
0
votes
1answer
11 views

How to get Bitcoin input transaction hash string from bitcoinjslib Transaction object?

I'm using bitcoinjs-lib and its Transaction object. Transaction.ins is an array of objects, each which has a hash and script property. Both of these properties are Uint8Arrays. I am trying to get ...
0
votes
0answers
11 views

How do create Intermediary between an acic machine and minimg pool?

I need vps Intermediary between asic miner and mining pool ... normal mode : asic miner >> minig pool Required Mode: asic miner >> VPS >> mining pool How can I do this?
0
votes
1answer
63 views

I'm running an antminer solo on my local bitcoind 'pool' will i get paid?

I'm running an antminer 'a' solo on my local bitcoind 'pool' plus an S5. Both are hashing away lovely, but only the S5 goes through bfgminer, 'a' is connected to my bitcoind 'pool' directly . My ...

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