All Questions

As far as I understand hodl invoices enable some interesting use cases. However, I heard that they can be detrimental to the network. Is that correct and in what way? Additionally, at a talk at the ...

I transfered money from my wallet bc1qf2m0sh7cq6m6p4wqjngg72c2vyh96f4glmug0y, But when I check the TXID in www.blockchain.com/explorer, I can not see my wallet number. For now my transaction was ...

For my unit tests, I'd like to be able to delete and recreate a wallet without having to stop bitcoind and manually deleting the wallet directory. When I try to delete such wallet directory without ...

Can I received step by step instructions on how to collect my payment when I have my transaction id number?

I simply want to unit test that my lock/unlock process works well on an encrypted wallet. What would be the easiest command I could send (that doesn't involve sending coins) to actually validate if ...

Does anyone know how to get a hold of a human being on the phone at coinbase? Or the contact info of a good crypto lawyer? Their customer support is lacking. I have a stuck transaction going on two ...

I recently sent btc that appears to be stuck (https://live.blockcypher.com/btc/tx/c131d65d933e343f852021830b833123de952c1857f264503388cf642655c457/) The interesting thing is that I used a higher fee (...

If I understand correctly, bitcoind makes use of a extended private masterkey in order to deterministically generate private/public keys for a wallet. Using the dumpwallet command, I'm able to get ...

So I finally got Visual Studio Code and NBitcoin installed and setup on Linux. How do I connect to my own copy of the blockchain and perform queries using NBitcoin? I have a full node running and it ...

I want to mine Litecoin (I don't have the hardware to do it, but I just want to get more litecoin because I expect its value to rise in both dollars and thousandths of bitcoins in the long term), but ...

So I have been reading up on bitcoin and blockchain for awhile now, but I have yet to fully understand it. I understand that bitcoin leverage on DLT, which uses cryptography to verify transaction. ...

I would like to be able to query the balance of an address (not belonging to me). The data should come from a fully synced bitcoin full node inside the local LAN and I do not want to query any api ...

So, Bitcoin block consists of some static (magic number, version, previous hash...) and dynamic (timestamp, Merkle Root, transaction count and transactions) elements. What I don't understand is if we ...

Bitcoin Core stores blocks in files in local disk. And it uses LevelDb to form an index on top of block storage to make it faster to retrieve a block (basically a simple key-value pair db). See this ...

Does one have to pay a fee to withdraw funds from their bitcoin account into cash?

I am running a node with an unconfirmed transaction. I tried shutting down my btc qt so the transaction would be forgotten. To no avail it keeps rebroadcasting the transaction. I am in the process of ...

Ripple, the founding company of the top third Cryptocurrency XRP is very popular among financial institutions and banks to serve multinational blockchain remittances. Previously, ripple has ...

-I cleaned the 3 hash board of dragonmint T1 using blower yesterday. then I assembled them . " when I turned on the power, the light of 3 hash board in On, but after some seconds only 1 hash ...

Please I want to ask how can I get the private key so to withdraw from my imported address and is it possible that you get to pay a certain amount of btc to get the private key..thanks in anticipation

Please does anyone know how I can send zero fee bitchin transactions? I know if might not confirm, I just wanna know if there are any wallets or sites or softwares that I can use to accomplish this.

I'm building out an application, but I need to verify if the bitcoin private keys have a positive balance. Is there a PHP script or some type of service that I can pass in a private key and outputs ...

If both the public key and the private key are known ahead of time (public knowledge), and the goal is to choose a message/nonce that generates a signature with, for example, a certain number of ...

When I use the blockcypher's api or the bitcore's api to push rawtx, I can only send successful transaction the first time. If I send the next transaction immediately, I will receive an empty return ...

Suppose LND node A wants to send a payment to another node D. The pathfind algorithm based on Dijkstra found a route through B and C and initiates the payment. It fails, as B -> C does not have ...

Please how do I create a btc transaction and broadcast it with protocoin library? I want to create a transaction that will relay to the node without validating inputs and outputs. Of course I know the ...

I want to make use of a single bitcoin address for payment. I'm using bitcoinjs library's transction builder for creating my own transaction. Can anyone help with a proper code to use multiple UTXO's ...

I'm trying to get an understanding of the chain reorganisations my node has experienced by looking at bitcoin-cli getchaintips. The "status" of the different branches tells me the following: 1. "...

Does anyone know where I can bring my btc qt to credit my wallet from an unconfirmed transaction? I tried doing a transaction with coinbase and in a hurry I put no fee. So it's stuck in the mempool. I ...

Do the current Bitcoin opcodes and transaction size limit allow constructing a UTXO which is only spendable if a specified amount of work has been performed? So the spender, would provide a nonce as ...

I just added a second Antminer S9 to my pool. I've been mining with one S9 and bitcoin.com for about a year. in Antminer-1 configuration I have my bitcoin username in the "Worker" Field / password "...

Newbie to all of this, hoping you can help with what is probably a "duh" question. I'll keep it brief, though: if I download the blockchain using the instructions given for the Bitcoin GUI, will I be ...

I maybe wrong but what I think is the Blockchain ledger exists as long as there are active nodes in the network. So can a blockchain be shutdown by shutting down power supply across the globe? What ...

I am very noobie to this and I am looking for blockchain parser for windows that seriously work. I want to parse all data from blkXXXX.dat to csv for future analytic research. Please help :(

I am finding deep technical papers about different anonymity exploits in bitcoin transactions. Have anybody encounter something more general about bitcoin anonymity exploits?

I use zeroMQ to get the transactions from Bitcoin Core. The output looks like this: { value: 200000, script: <Buffer 00 20 e3 30 7e 8e 0b 63 0e 53 c2 f1 f8 17 06 7b ce 01 c4 38 92 83 3e 02 2d ad ...

I am developing an application that will accept Bitcoins targetting some specific "items" in my application, and later transfert some of those Bitcoins to externals addresses. In many similar ...

I had money sent to my wallet and couldn’t remember my encrypt password. I had my 12 word recovery phrase written down but it’s abbreviated. I deleted my wallet which I shouldn’t have done because I’...

An interesting question was posted recently, discussing the idea of hashed addresses being (not meaningfully) quantum resistant. As Andrew's answer on that question points out, paying to a hashed ...

I've seen many HYIP (scammy) websites and they all look the same. Despite the scammy part of them, what I like of those websites is that they accept deposits in different currencies, BTC, ETH, XRP, ...

Are there any examples of sidechains which target a block time much longer than bitcoin? Could a sidechain be made "slow enough" such that the size of a proof (SPV proof?) for it could actually fit ...

Webistes like https://miningpoolstats.stream/ must communicate with the pools somehow. What protocol do they use to retrieve information such as the pool's hashrate and what blocks have been mined by ...

I used to day trade on gdax for a while, but without any massive hits and an overall return (over 3 months) of around 130%. As I would like to include that I have traded cryptos on my CV, I imminently ...

i saw the news about the protocol upgrade of bch: https://www.bitcoinabc.org/2019-08-21-bitcoin-abc-0.20.0/ there are some things i didnt understand: what does exactly the "MINIMALDATA" means? is it ...

I have a variable number of addresses I want to send Btc to and I have a wallet (created in NBitcoin) as the source. A couple of questions. All the examples use the fluent methodology to declare, ...

I created a channel in lightning network, did the payment and the channel balance of the receiver got updated. But after closing the channel , the wallet balance of the receiver is not getting updated ...

I am learning Solidity on Cryptozombies, and while learning about structs, I've encountered that if I don't declare "String" and "uint" in this very specific order, it gives an error. Why so?

In the discussions about taproot, it was mentioned that outputs will include the public key directly instead of hashing them. It is stated that, currently, hashing does not really provide quantum ...

Which wallets support double spending? i.e. cancelling a transaction with 0 confirmations by using higher fees

Is there a browser extension that works similarly to Ethereum's Metamask? I am wondering that if there isn't one, is it because of some technical limitation, or that just no one has gotten around to ...

I have a couple of cards that are not mine, I have all of the card holders info and card info. I want to purchase bitcoins and then transfer them to other wallets. I have a couple of friendswho want ...