All Questions

-6
votes
0answers
5 views

Halfin Research

https://halfin.io/ Cryptocurrencies have enabled monetization of ideas paving way for technological revolutions that could not have been imagined a few years back. Halfin Research envisions to ...
0
votes
0answers
3 views

Remote node signature for HTLC-success and HTLC-timeout transactions

According to BOLT #3, when constructing a HTLC output in the version of the local node (both received and offered HTLC), it requires that the payment to the local node is locked with CHECKMULTISIG ...
0
votes
0answers
2 views

Litecoin : Error ECONNRESET while trying to connect with NodeJS

I am getting started with Litecoin so please bear with my question. So I have a local litecoin node running in my local system. So I am planning to use NodeJS to communicate with the Litecoin server. ...
1
vote
0answers
7 views

Combining inputs from different users?

With two separate signed raw transactions from two users, how would one go about 'batching' these manually (combining the inputs and outputs into a single transaction)? Is this a viable solution for ...
0
votes
0answers
7 views

SubtractFeeFromAmount not consistently working

Running bitcoind and bitcoin-cli with JSON RPC, 0.18.0 on testnet, having a nightmare trying to understand the inconsistency of this parameter's behaviour. It works fine every time, until the ...
0
votes
0answers
8 views

Pass Multiple addresses in redeem p2sh script

I have the following code const script = this.app.env.bitcoin.script.compile([ hashOpcode, Buffer.from(secretHash, "hex"), this.app.env.bitcoin.opcodes.OP_EQUALVERIFY, Buffer.from(...
-1
votes
0answers
13 views

CoinExchangeData and the search for accurate prices

I fancy myself as a little bit of a trader, and sometimes have trouble finding accurate crypto prices for my needs. CmC, CoinGecko and others are all well and good for general purposes, but I find ...
0
votes
0answers
19 views

Payment confirmed, but not received

I've made two payments to the same deposit address, one of them has gone through and the other has been stuck for days now. Can anyone help with this? It's saying it has been confirmed but it hasn't ...
3
votes
1answer
153 views

How bitcoin nodes update UTXO set when their latests blocks are replaced?

Let's say bitcoin node has 100 blocks. Then he recieve another two blocks. Now it have 102 blocks. But now he recieve block 103. And this block is from another chain and our node have to remove blocks ...
3
votes
1answer
40 views

ECDSA - why not using the cyclic additive group

As I understand things so far, the ECDSA scheme used by Bitcoin uses a group G generated by a point on the elliptic curve y^2 = x^2 + 7. Now G is a cyclic group of finite order n and is, hence, ...
0
votes
0answers
11 views

BIP39 Path in ledger nano s

On ledger nano S, you are given a BIP39 24 word mnemonic. What is the path to the address used? Is it m/44'/144'/0'/0/0 ? Say for example I use the address generated by the ledger nano s to store ...
0
votes
1answer
23 views

bitcoind connection refused error with curl

my bitcoin.conf: server=1 rpcauth=myusername:e2aa83d74a55b7addfe070367546e72d$953dda2b7e2d5a151a7ef0e82ed50a734bf4c4ac55289fede8bd340489d5af0f rpcallowip=46.101.245.27clientip address datadir=/mnt/...
0
votes
1answer
17 views

Learning + checking the bitcoin address creation process at each step

I’m learning how hashing algorithms are used around the process of bitcoin address creation. I’ve read lots of great examples online that, step by step, show the output of each sequential hashing ...
0
votes
0answers
9 views

What is the difference between BFT and PBFT

What are the differences between BFT and PBFT? I want to know the difference between these two concepts. If there is any improvement in the BFT's limitations, let me know. Please answer. Thank you.
-2
votes
0answers
20 views

TCP/IP, HTTP, UDP connection and peer discovery in bitcoin core, cgminer, bfgminer source code [on hold]

What files, libraries, classes, blocks of code used for TCP/IP connection, peer discovery, HTTP connection, UDP connection in bitcoin core (0.1.5 and latest releases including last 0.18.0), other c/c++...
2
votes
1answer
25 views

Genesis block coinbase transaction without confirmations

I'm a little bit lost. Why the coinbase transaction, comming from the genesis block, don't have confirmations? All the others coinbase transactions have confirmations, but not in the Genesis block.
0
votes
1answer
12 views

How multiple unfinished payments in single LN channel work?

I think I understand HTLCs, at least if they are on chain. I also have a basic understanding of how off chain channel looks like. I understand it as follows. It is a 2-of-2 multisig transaction ...
1
vote
1answer
26 views

What is a relationship with total hash rate(hash power) and average block generation time?

This chart - hash rate means total hash rate of All minor? I think the most significant factor for difficulty and block generation time is the hash rate of the biggest mining pool not total hash rate ...
1
vote
1answer
31 views

Concept of Block weight and segwit are still unclear

It seems like duplicated question, but i read many articles and posts to undestand about segwit. Below links are something i read What is block weight and how is it different from block size? After ...
1
vote
2answers
29 views

Why do we use CLTV instead of CSV in the HTLC output of the commitment transaction?

In lightning network commitment transactions, the HTLC offered/received outputs generally pay the offering node after a timeout which is scripted using CLTV. In other parts of the commitment ...
0
votes
0answers
8 views

Is there any alternative for patreon.com that supports payment with credit card, and supports recurring donations? [on hold]

I want to receive people's donations in my bitcoin wallet. But the audience of my content are not very familiar with cryptocurrency. I preferred a platform that payed me in Bitcoin, but allowed ...
0
votes
0answers
12 views

what broke (and how do I fix it)?: I can mine testnet (via cgminer and bfgminer-0.5.5) on bitcoind-0.17, but not on bitcoin-0.18

I haven't changed any configuration, merely upgraded bitcoind. Working: the following scenario where machine 'A' has the ASIC, and bfgminer, and machine 'B' is running bitcoind-0.17 on testnet: ...
0
votes
0answers
10 views

Signing a Tx that has multiple UTXOs

Using Go language, I am trying to create a BTC transaction, using multiple UTXOs. I am adding the UTXOs by doing this: Tx.AddTxIn(TxIn) creating the TXOuts one for the amount to send out and one for ...
0
votes
0answers
11 views

pay dollars and receive bitcoin service

I'm looking for something like gumroad, but where customers can pay dollars (or other fiats) and I receive bitcoin (or stable coin), something that allow me to fix a price in dollars and receive ...
0
votes
1answer
9 views

Privacy of sending CoinJoined UTXOs from wallet with unCoinJoined UTXOs

If I use something like Wasabi to CoinJoin my UTXOs and then send the outputs to a wallet with addresses containing UTXOs that haven't been coinjoined does this present a privacy risk?
0
votes
0answers
13 views

Display IP address that bitcoin core bitcoind has discovered

Per the bitcoin wiki, bitcoind will auto-discver it's own IP address by default. However when I run bitcoin-cli getnetworkinfo the only address that is shown under "localaddresses" is the onion ...
0
votes
2answers
26 views

How can i access my bitcoin core payment if headers cannot sync due to insufficient storage

My Mac laptop does not have enough storage to sync more than 51.57% of headers needed and i cannot access my bitcoin payment. I have tried creating space, trying to change data directory and importing ...
0
votes
0answers
28 views

Trying to access an old wallet.dat

So I found my old mining wallet from 2012 that I earned some 0.5BTC on, but I'm having trouble accessing the file. I've tried following the instructions here (opening an old wallet.dat), but I'm ...
1
vote
0answers
27 views

How does 1ML measure the availability ranking of nodes?

If there is an 1ML Node Rank ranking explanation anywhere ? My node is online 99.9% but "Availability" dropped down from 700 to 4000 in last 3 months. :( I guess this is somehow associated with the ...
0
votes
1answer
20 views

How to code bitcoin transaction for shopping cart

I have written website shopping cart software using MySQL and PHP and I need to add a way for users to pay with Bitcoin. This seems like a basic need for developers in general, but I'm having ...
0
votes
1answer
28 views

How to ./configure a built for Raspberry Pi?

I want to use this guide to set up a headless bitcoin core full node and came across the line: ./configure CPPFLAGS="-I/usr/local/BerkeleyDB.4.8/include -O2" LDFLAGS="-L/usr/local/BerkeleyDB.4.8/lib" ...
0
votes
1answer
25 views

Unable to bind any endpoint for RPC server

I recently updated my bitcoin docker image to bitcoing v0.18.0 version and can't allow external rpc connections to it now. It binds to localhost if I set rpcallowip=X.X.X.X, then I tried to used ...
0
votes
1answer
9 views

How do I start a bitcoind server in deprecated mode for multiple functions

I have a bitcoind server running bitcoin-core version 0.17. Now since I need to use deprecated RPC methods I need to start the bitcoind server in deprecated mode, so I am already able to run it to ...
1
vote
0answers
23 views

Monero CLI experience is great. Is it possible to have the same experience with Bitcoin?

Am familiar with Monero, but not with Bitcoin. I know, that's a small demographic... Is it possible to have a Linux CLI-only Bitcoin wallet that connects to a remote node? I'm looking to have an ...
0
votes
2answers
47 views

Where can I get bigger amount of test BTC?

We are conducting some testing with the end users of our application and I need a bigger amount of test BTC for it. Using faucets, I can get 0.1 or 0.01 per request with captcha, but I need something ...
0
votes
1answer
20 views

Understanding bitcoin-cli commands walletlock and walletpassphrase

I am trying to understand two commands listed in the following link. 1. walletpassphrase Stores the wallet decryption key in memory for <timeout> seconds. 2. walletlock Removes the wallet ...
0
votes
0answers
15 views

How to communicate with encrypted bitcoin wallet using bitcoin-core in NodeJS

I have a full node running in my local system and I am using this library named bitcoin-core to communicate with the bitcoind server. Now I have encrypted my wallet with a passphrase so I understand ...
0
votes
0answers
17 views

Is “USDcoin.top” a legal cripto exchanger?

I have exchanged some BTCs through USDcoin.top. It took about 30 hours, But still not exchanged or received back to my Blockchain wallet. Am I going to lose my money? Can someone please explain to me ...
-1
votes
0answers
25 views

CBOE Bitcoin Options

In this video, Tyler declares that options on Bitcoin can be traded over the CBOE. However, I haven't been able to find further information; everything Google returns is about Bitcoin futures. Is ...
0
votes
1answer
19 views

Google Sheets Cryptofinance Add-on - is the company still operating?

I sent in some support emails since May 14 and have not heard back. Anyone aware if the developer is still operating this add-on for Google Sheets? Update, they replied today (May 23) ...
0
votes
1answer
22 views

The vanishing XLM! Help please?

This question is about my Bitcoin core wallet, I got XLM with the airdrop when the Bitcoin Core wallet added XLM to the wallet. Got it months ago now and its been fine just sitting there until today, ...
1
vote
2answers
26 views

How do I install a specific version of bitcoin-core

I need to run bitcoind version 0.17, however the latest available version is 0.18, if I follow the instructions from this link it installs the latest version. The below links lists the packages for ...
2
votes
1answer
105 views

Why do we need to chain the blocks (creating blockchain) in a permissioned blockchain?

The main question is: What does "chaining block" mean in a permissioned blockchain? OR in any blockchain network in which creating a new block does NOT need consuming resources/energy ? (even in the ...
0
votes
0answers
15 views

How can I automate bitcoin payments to multiple different wallets? [on hold]

I'm looking to automate Bitcoin payments to multiple different wallets, from one central wallet that I own. Allowing a customer to input their wallet ID before triggering an automated payment to ...
0
votes
0answers
22 views

New block watcher

guys. I need to create bitcoin watcher, which will subscribe to new block event of bitcoin node and make some operations with mined transactions. For starting node I use bitcoind -testnet -datadir=/...
0
votes
1answer
28 views

How to track bitcoin transaction on PC

I am still quite new to Bitcoin, and my question may be a little bit stupid. So I am wondering how can I track the transaction or the newest block on my computer. I know there are tons of websites ...
1
vote
0answers
23 views

Enable dustRelayFee behavior on testnet to get error code 64: dust

Crafting and sending an utxo of 1 satoshi does works and get mined on testnet without error. However on mainnet the error code 64: dust arise. I understand the basic idea that you are not able to ...
1
vote
2answers
37 views

Is it possible to separate blockchain and wallet functions?

I'm looking for a way to use bitcoin-core in monero-way (It uses separate blockchain daemon and wallet daemon). I'd like to run bitcoin-qt interface on my laptop and connect to external node with ...
2
votes
1answer
20 views

Mining Pools Transactions Fee

I am learning about mining pools and trying to understand their reward structure and transactions fees. Looking at the two largest pools, Antpool & BTC.com, as far as I understand AntPool uses ...
0
votes
0answers
8 views

Restoring an HD wallet tree [duplicate]

I saw this question: How does restoring an HD wallet work? I think the answer fits to a chain wallet (Seed) and the process is different while it's on a tree. I still don't understand how the ...

15 30 50 per page