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1answer
9 views

Where do I include my wallet address after finding the hash less than target - bitcoin

Please help me understand the logic behind mining a bitcoin from scratch. I want to create a bitcoin miner, it will not receive any blocks from any pools. All should be done inside the miner. So, I ...
0
votes
0answers
8 views

Sent bitcash to bitcoin coin address given by coinfy from my bit wallet can they trace funds and return them or is it impossible

Hi I sent bitcash instead of bitcoin to coinfy bit coin address they gave by mistake should of bitcoin.. it's completed hash tag etc.. I was told the mix up was from my wallet to them (being new to ...
-1
votes
0answers
10 views

How can one build a time-series set of the UTXO of each block to produce a total utxo set chart over time?

Hi I am interested in reproducing the UTXO chart like they have in other sites. I was wondering how can one go over each block and sum up the UTXO iteratively and build a dataset? This data will be ...
-1
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0answers
17 views

Question to Marco Falke and to other Bitcoin Core developpers and/or reviewers

Dear Bitcoin community members, I will explained briefly the reason why I am writing here. I am working as a PhD student on the functioning of cryptocurrency governance. I'm trying to document two ...
0
votes
1answer
9 views

Sign transaction legacy with Openssl

I want to understand how Bitcoin sign transactions with Openssl. I saw this post But I have some issues. Above my private and public keys. Private keys: $ cat chiave_priv_3.pem -----BEGIN EC ...
0
votes
1answer
9 views

Doesn't overt AsicBoost reduce the search space for a valid block header hash?

ASICBoost is a new method to mine bitcoins with a 20% speedup, as covered in this article: https://blog.bitmex.com/an-overview-of-the-covert-asicboost-allegation-2/ Now, consider the following ...
0
votes
1answer
7 views

how to use bitcoid “walletnotify” for unique transactions only

while using bitcoind "walletnotify" my curl command is getting 3 hits generating 3 unique transaction hashes but requirement is to execute only once for unique transactions. I heard about ...
0
votes
0answers
11 views

Sign Raw Segwit (P2WPKH) Transaction Digest

I have a simple transaction that I want to sign the digest of, but I'm not sure if I've got the raw transaction correct, therefore my digest is incorrect. The transaction has one input and one output,...
0
votes
1answer
8 views

Exact syntax for lightning-cli txprepare

I have tried many different forms but I cannot prepare a transaction with lightning-cli txprepare from the Linux prompt. lightning-cli txprepare [{\"bc1qvzr0mwps952d0cdmchyd2pe5rlee5tfces5dzf\":\"all\...
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0answers
9 views

Mathematics behind sidechain SPV skiplist proof attack

I am reading about verifying SPV proofs of a sidechain where we don't want to verify all N blocks of the sidechain. In the example instead of verifying that each block meets the target difficulty (...
0
votes
1answer
23 views

Double SHA256 giving me an incorrect value with this code VB.net

I'm trying to build a bitcoin miner. I have generated the message successfully, but I can't get the double SHA256 correctly. The value I'm getting is incorrect. What is wrong with this code? Private ...
0
votes
0answers
10 views

Is it possible, with bitcoin-core or btcd, to manually set the scriptSig field in a coinbase transaction?

I am talking about when using regtest or simnet modes. For context, it is so that I can create coinbase transactions with reproducible txids.
0
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0answers
12 views

Can anyone help?

My friend said he sent me 0.077 BTC, but i have only received 0.037 BTC. The Bitcoin explorer shows that there are 2 output, one of 0.037 going to my BTC address, another 0.039 went to a different ...
0
votes
1answer
9 views

bitcoin-cli createwallet electrumpersonal server true

I'm a noob following instructions to setup Electrum Personal Server on Linux. I came to this instruction and I'm stuck. Got an warning. What is this? { "name": "electrumpersonalserver", "...
2
votes
1answer
11 views

why is my p2sh raw transaction not being mined or erroring ERROR: 64: NON-MANDATORY-SCRIPT-VERIFY-FLAG (EXTRA ITEMS LEFT ON STACK AFTER EXECUTION?

I created this 2-of-2 multi-signature address for testnet following the instructions on the book Programming Bitcoin. I tried to spend the funds in this address following the standard forms (...
-1
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0answers
11 views
-1
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0answers
15 views

Why blockchain proejcts establish foundations?

I saw alot of foundations related to many blockchain projects. Why did they do? In my opinion, it is better to establish a company than a foundation.
0
votes
1answer
22 views

If i have 42 tera hashes of mining power, how long will it take me to mine a block solo, and if i join a mining pool, how much bitcoin will I get?

If i have 42 tera hashes of mining power, how long will it take me to mine a block solo, and if i join a mining pool, how much bitcoin will I get? I am intrested in buying 4 Bitmain Antminer T9+.
0
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0answers
18 views

How to get private key and Bitcoin address in pure Python - without modules?

How to make a pure Python code for Bitcoin address and private key without modules? For now I learn only how from decimal to get a hex. How from hex to private key WIF and than Bitcoin address? bits ...
0
votes
1answer
18 views

Is it possible to handle BCH transactions on Bitcoin Core wallet?

I've installed Bitcoin Core on a server and it works well for BTC. I would like to know can I use the same server and platform to support BCH too? I know that the addresses generated in Bitcoin Core ...
0
votes
0answers
13 views

bech32 address not showing in watch-only wallet (using HWI descriptors)

First of all thanks for all the awesome tools. Especially Andrew Chow and Sjoors Provoost, for my use case. Now, I´m a little confused. A transaction I sent from a mobile wallet to a watch only wallet ...
0
votes
0answers
12 views

Step by Step to Connect to ElectrumX via Nodejs

I am developing a simple app that will need to retrieve BTC wallet Address Balance and relative transactions Initially I thought to use some existing APIs (btc.com, blockchain.com etc.), but the ...
0
votes
1answer
12 views

Re-index/Re-download from specific height?

I seem to have discovered corrupt blocks on one of my nodes. The node is on all the time to keep up to sync and the rest of my nodes connect to it to retrieve block data when they need to sync. The ...
0
votes
1answer
16 views

Are the indexes generated by txindex=1 persisted to disk?

I'm running bitcoind with the option -txindex. $ bitcoind -txindex it seems to be taking around a day to fully index the whole blockchain. (I'm using a raspberry pi 4, 4GB of Ram, with an external ...
0
votes
0answers
14 views

Chance of a word repeating THREE times in a BIP39 Mnemonic passphrase? And what about 2 words repeating 2 times each?

So according to the other thread about BIP39 repeating words, the cahnce of a word repeating TWICE is 11.7%. Now I was wondering, since my passphrase may or may not contain THREE repetitions :O. And ...
0
votes
3answers
53 views

Loosing your bitcoins due to a glitch on your mycelium app, and how do you get the back without a backup?

I went and purchased some bitcoins on my mycelium wallet. Once I went back to my car and opened the app to do a backup for it the app just stopped working and it wouldn't open back up. I couldn't do ...
0
votes
0answers
13 views

Bitcoin core node not sending outbound connections only inbound traffic

My bitcoin core is not sending outbound connections. It's only getting inbound connections. Iv deleted the whole node then reinstalled it. Still it was only getting inbound connections. Iv checked ...
0
votes
1answer
22 views

How can I perform key derivation from a 130 characters hex public key?

I'm working with a hardware wallet (Keycard) and I'm able to export a 130 characters hex public key of the path m/44'/0'/0'. Now, I need to perform account discovery, and in order to do it I first ...
0
votes
0answers
16 views

GeForce GTX 780 desktop pc vs. old dell and toshiba laptops

I'm curious as to why when I mine Satoshis with the app "Bitcoin Miner" with my gaming computer I get slower or = to the hashrate that my older laptops are getting.. I assumed it would be 10x faster ...
0
votes
0answers
7 views

Recovering an armory wallet from paper

Nice to meet you :) I'm struggling to recovering a relative old armory wallet (1.35 paper backup with 4 lines). Apparently there is an error in line one but check it up and rewrite it many times. No ...
0
votes
1answer
24 views

Bitcoin UTXO anatomy

I've been using a command line tool to fetch spendables from a Bitcoin address. Given an address the following command (source) ouptuts UTXOs the address can spend. tx -i ...
1
vote
1answer
19 views

How do I get Raw Transaction Txid, Scriptpubkey Using Bitcoin Core Console

I just finished downloading bitcoin core on windows 7 and I am trying to create a raw transaction. When I typed listunspent 0 or listunspent 1 on console, I got no message (empty message) in the ...
0
votes
0answers
16 views

Please help me. Problem with my account [closed]

I have received an email from blockchain team that my account is deleted. Why it is happend? How can i access to my funds. Please help me.
0
votes
2answers
40 views

What prevents a knowledgeable person from modifying their bitcoin data?

The average person would not have the knowledge, but what is the mechanism that stops a programmer capable of writing a wallet, from modifying the local bitcoin file/data to be, for example, 10 ...
0
votes
1answer
22 views

Does restoring wallet.dat require the same paths and configs in servers?

I have a Bitcoin core server (Server 1) which is working well. Now I am testing backing up and restoring its wallet on a new server (Server 2). Imagine that the server 1 has these configs: ...
0
votes
0answers
18 views

How to tell if my node is online (conflicting information)

I am really confused. I am attempting to set up a listening node. When I look at bitnodes.earn.com it shows my node as offline when searching by IP, but when I run getconnectioncount it returns a ...
0
votes
0answers
21 views

Bitcon bitcoin cash [closed]

Hi sorry I've sent bitcoin to Tash instead of bitcoin address. please follow up. My account is not charged right now. Instead of this address: 1FJ1sryyHTXza6BDX5o4d4JFUDCdFt9muR I sent this address: ...
2
votes
2answers
136 views

When will the last block halving happen and when will the block reward fall to 0?

I could not find an answer for these questions: I found out that there are 33 periods of 210,000 blocks?!?!? First one gave the miner 50 bitcoins per block, then 25, 12.5 ... and the last one 1 ...
0
votes
2answers
19 views

Bitcoin core / Bitcoin cash [closed]

I want to retrieve my Bitcoin Cash, since many years back. Back then I was using Bitcoin Core, and I have my wallet saved. However, I can't find the bitcoin core cash version wallet. What's the name ...
0
votes
0answers
22 views

Why are there equal send transactions for each receive on Bitcoin Core?

I've lunched a new Bitcoin core wallet, and generated some addresses using it. Then I tried to receive some BTC to these address, and then, found out if I receive some BTC, there are equal send ...
3
votes
1answer
50 views

Can a coinbase transaction have a segwit output?

And more generally speaking, are there any restrictions on the output of a coinbase transaction?
0
votes
0answers
14 views

Building a Litecoin fork and have some questions [closed]

I'm following Youtube tutorials (yes multiple because each are incomplete in some way) to build a Litecoin fork. So far I've been able to render my coin's wallet on Linux. Great. However... In one of ...
0
votes
1answer
23 views

Resource on cryptocurrency exponents/significant digits/decimal places?

I'm looking for a comprehensive list, or library, that lists a wide range of cryptocurrencies and there exponents/significant digits/decimals - ie "8 for BTC, 18 for ETH, ..."
0
votes
0answers
25 views

Funds not in wallet [closed]

1B9FxnbKsCKzSJuwUnWbH1V9gdKCVC6135 is the address i can see it on blockchain explorer says the balance is in there but its not showing up in my wallet....
0
votes
1answer
51 views

Physical safety of crypto owner

Let's image a scenario where I buy (or trade) BTC on a regular basis and have a large number of coins in my wallet. Of course I'd like to be able to use my coins whenever possible, exchange with ...
0
votes
2answers
39 views

How to find/view derivation path in Bitcoin Core

I have found many default derivation path online which is used in bitcoin core, but i still can't get the correct one so that i can import my bitcoin wallet to my electrum wallet (BIP 39 option) with ...
0
votes
1answer
43 views

How can I get the bitcoin amount of an bitcoin address which doesn't belong to my wallet?

I am trying to make a query about a bitcoin address's btc amount. As I've read, getreceivedbyaddress rpc command can only be used for the addresses of a wallet that one owns and that command is ...
0
votes
1answer
20 views

Lightning Network LND - Retrieve payment by hash

How do I get an outgoing Payment by paymentHash using LND REST API? I know that GET /v1/payments returns all payments, but I would like to get one in particular, not all as there may be thousands. ...
-1
votes
0answers
24 views

Why would Pale Moon not be “accepting” free money in the form of Bitcoin? [closed]

Donations in cryptocurrencies are no longer accepted. Due to the rapidly increasing volatility, ridiculous transaction fees and increasing amount of criminal activity around any cryptocurrency, ...
2
votes
1answer
50 views

Create Custom Script with 2-3

I'm studying P2SH, and I want to create a custom script. I already created one tx but without OP_CHECKMULITISIG as you can check at this link https://tbtc.bitaps.com/...

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