All Questions

0
votes
1answer
5 views

How to backup seed in lightning and give your channel to watchtower

this is followup on question #85475: I have learned in previous question that there is an automatic refund mechanism in case of force closure of a channel, except for some very rare circumstances. I ...
0
votes
0answers
8 views

Create a Double sha256 block and trandaction

I have same problem whit create a double sha256 of the transactions and blocks with C++. The hash block it is created with the concatenation of these data, version + previusBlock + merkleRoot + ...
1
vote
0answers
8 views

How does a full node benefit from receiving a block with a version number in its header?

Block headers are special because they're synced by SPV wallets. They're also part of the mining algorithm used by miners, which can enable controversial things like ASIC boost. However, in the case ...
0
votes
2answers
13 views

How to make bitcoin-qt respect -prune?

I'm using Bitcoin Core 0.18.0-rc2 (64-bit) on Qt 5.9.7. How can I make it respect -prune=550? This is the minimum prune number, and should be approximately 550 MB. Yet, my client is downloading ...
0
votes
1answer
13 views

Do pool operators usually set block version numbers before their clients hash?

I know that pool operators have the power to modify the actual transactions in a block. I also know that pool operators can decide on block transaction orderings and even commit double spends pretty ...
0
votes
0answers
4 views

Testnet APIs for bitcoin sv?

I'm trying to write code in nodejs that can check balance of an address and send transaction. I'm using the bsv library in nodejs, and I'm stuck at 2 parts which concern to interacting with the ...
0
votes
1answer
8 views

Are Bitcoin wallet apps on iOS truly decentralised

The only offering for p2p support on iOS that I’m aware of is the MultipeerConnectivity framework. Based on its documentation, it only seems to support nearby devices (ref: https://developer.apple.com/...
0
votes
0answers
9 views

LedgerJS - How to P2SH sign multiple transactions from multiple wallets in 1 function call?

First some explanation I have made 2 raw transactions via Electrum using my Nano S Ledger as seed and exported them to .txn files. let rawTx1 = "...
2
votes
2answers
220 views

Are lightweight LN wallets vulnerable to transaction withholding?

As far as I know, LN requires the user to watch the blockchain in order to perform penalty in time. However, running full node is probably a heavy burden to some users, especially to mobile phones. I ...
0
votes
1answer
12 views

Is it possible to get Node Id that paid an invoice?

I know it's possible to decode an invoice to see which node ID signed it by decoding it according to specs. Is it possible to get Node ID that paid an invoice to my node?
0
votes
1answer
24 views

Does buying bitcoins and not spending them have negative influence of the bitcoin price?

I'm curios whether stock investing behavior have negative infect on the price of the bitcoin and other cryptocurrencies. Since popular delusion is that the crypto is like a stock where you buy coins ...
1
vote
1answer
22 views

What clients use version number “2” and version number “1” in their block headers?

Is Bitcoin Core the only protocol that uses these version numbers? Does anyone know what ABC and Unlimited use? Is there a place where I can see the raw version numbers for each client easily?
0
votes
0answers
15 views

Need to use two bitcoin core but issue with syncing

Need to know how we can use two bitcoin node for example. I do have two bitcoin full nodes A and B. Created wallet address at A and has all transaction details at wallet.db in node A. But I need to ...
0
votes
1answer
20 views

How to transfer bitcoin/money to another person in another country?

If I have 100 dollar in the cryptocurrency exchange like coinbase and so on, can I transfer that money to another person in another country through the exchange? Or would I have to buy bitcoin first ...
0
votes
0answers
13 views

Hash rate of the average PC/Top end PC

Hi I was wondering if anybody had any idea about what the hash rates are like with PCs released fairly recently. I'm sort of looking for figures to use for an average user if they wanted to use their ...
-1
votes
1answer
22 views

How to find the persons name with a bitcoin wallet address

I want to know who I sent money to. I need to know because I believe I was scammed
-1
votes
0answers
8 views

debug.log found in my mac system

I want to know if this is a bitcoin transaction i found in my computer wallet. 019-03-16T21:22:38Z UpdateTip: new best=00000000000000000e5a76e7fe7b72319617f515a4d7c76243f8062e64fb311b height=344194 ...
-1
votes
3answers
47 views

Is Bitcoin Cash more secure?

I found in https://www.bitcoincash.org/index.html that this technology is the world's most robust blockchain but searching for the details that explains why it is so secure I don't find any ...
0
votes
1answer
18 views

Bitcoin-Qt [11690]

I found this on my mac computer what is the meaning of this can you pls hep me to understand I am new to this; Process: Bitcoin-Qt [11690] Path: /Applications/Bitcoin-...
0
votes
0answers
13 views

How to use bitcoin on Debian?

I want to use bitcoin in Debian. I want to be able to receive BTC and make payments in BTC. I want to keep my wallet locally, on my computer. I want a light client, I don't want to download the ...
0
votes
1answer
17 views

Signature digital algorithm in bitcoin, to what will it change in the future?

in follow-up to the question: 85202 There, @ugamat wrote ""ECDSA is the first thing that can get vulnerable with quantum computer. signature will need to move to post quantum world much before quantum ...
0
votes
1answer
30 views

Why dont' nodes change the block version number when the nonce overflows?

After computing 4 billion nonces, the miner is supposed to update the merkle root. Why don't they choose a new nonce and assign it to the block version number and begin again? It would save time and ...
0
votes
1answer
13 views

Expected property “0” of type ECPair, got p

When I'm trying to create a wallet in react app using the following code: const seed = bip39.mnemonicToSeed(mnemonic); const master = bitcoin.HDNode.fromSeedBuffer(seed, "testnet"); I got error: ...
0
votes
1answer
19 views

Bitcoin Core 0.17 sethdseed then dumpwallet how to recompute extended private masterkey?

Using bitcoin-cli -datadir=X sethdseed true "WIF_KEY" the current wallet within datadir is updated Then, using bitcoin-cli -datadir=X dumpwallet my_dump.txt shows a fresh new # extended private ...
2
votes
1answer
15 views

What does the prefix of the raw transaction encoding of an exported Electrum transaction file (.txn) mean?

I have exported a testnet transaction into a .txn file: { "hex": "45505446ff0002000000000101c6be24d86ab1ae5b54e7e7905b...", "complete": false, "final": false } However, as explained in ...
0
votes
1answer
19 views

Neutrino enables full mining nodes without storing the entire chain?

in follow-up to thread 85203: With a fully implemented Neutrino (BIP 157/8) in Bitcoin, would it enable one to operate a MINING Node without having to use/store the entire gigabytes of blockchain ...
0
votes
1answer
18 views

Destination address(es) when redeeming an HTLC

Starting from this text at https://en.bitcoin.it/wiki/Script: "The script for a typical Bitcoin transfer to destination Bitcoin address D simply encumbers future spending of the bitcoins with two ...
0
votes
1answer
20 views

Bitcoin Core change derivation path with getnewaddress cmd 0.17

As I'm building a simple HD wallet, I would like to use bitcoin core regtest. My goal is to setup a testing flow where I could have constant seeded address each time I use bitcoin-testnet-box, so that ...
0
votes
1answer
33 views

Transporting Bitcoin

Can ı take Bitcoin from one country to another?
0
votes
0answers
14 views

Trying to develop a cryptocurrency based on MimbleWimble protocol. Where and how to start? [on hold]

I am trying to develop a cryptocurrency as a pet project and I've come across MimbleWimble which is quite an innovative alternative to Blockchain/Ethereum. I am stranded and confused with this ...
0
votes
1answer
31 views

funds in hd wallet

I have a doubt on HD wallets, I have generated a sequence of address. how to check the balance of each address or how we can look for balance. Did the amount move to the base address as like monero ...
2
votes
1answer
20 views

How to revert back several blocks in Bitcoin Core without re-syncing from scratch

My node was running on a computer that I accidentally unplugged and it died. When trying to restart Core now it is not working, presumably because the computer dying forced Core to exit non-gracefully....
0
votes
1answer
29 views

How do I configure a port in my .conf file?

This is what my conf file looks like: prune=600 maxconnections=12 maxuploadtarget=20 rpcuser=user rpcpassword=password keypool=10000 server=1 [main] rpcport=5040 Whenever I run this from the ...
0
votes
0answers
17 views

How to use Bitcoind walletnotify in bitcoin.conf?

I want use walletnotify command and request my node.js restfull api but have exception system(curl --url http://192.168.3.2:3000/api/btc/WalletNotify/...
0
votes
1answer
33 views

How can I locate who took my money?

Need help to try locate where my bitcoin went to. Was given a company wallet address to send my money to. I realise now I was scammed. Would you be able to help me locate exchange that my €5700 went ...
0
votes
0answers
23 views

Bitcoin winnings from online gambling

Question, if someoene wins some $ online, like poker, and the winnings are deposited to a Bitcoin wallet, is it realized as income at that time? Or only as you spend or transfer the bitcoin out to ...
0
votes
0answers
33 views

Bitcoin walletnotify doesn't pass the txid as %s

Thoroughly searched this online but haven't found an answer yet. Basically I'm using the below line in my conf file: walletnotify=C:\pathname\filename.py %s It is supposed to run my python file ...
0
votes
2answers
47 views

Lightning - Question about force-closures of channels and its impact on recovering funds

Dear Lightning experts, someone mentioned in context with lightning channels the following things, and I would like to ask you if this statements are true, and if yes, is this a problem in a future ...
-3
votes
0answers
24 views
1
vote
1answer
56 views

What is the current computing speed of performing an elliptic curve multiplication?

Hi I was just looking for some information on how long it would take to crack a private key in bitcoin using a brute force approach and I couldn't find a very good answer for how long it takes to ...
1
vote
1answer
33 views

Known cases of miners withholding blocks when used as randomness?

There are some applications that use the blockhash as a source of randomness, often with a payout similar to a lottery. I've heard of attacks where it would be more profitable for a miner to withhold ...
1
vote
1answer
33 views

Negative number of confirmations for a testnet transaction on blockexplorer

I am curious about the test transaction f72f59a32c1bac47ec87bc3678ec44e98eece5e235d29d79cd1f5461ccc5bf38. Depending on which site I view this transaction, the number of confirmations is positive or ...
-1
votes
0answers
17 views

Developing a simple nodejs application for Bitcoin Cash & Bitcoin SV

I want to develop 2 simple nodejs applications. One for Bitcoin cash and one for Bitcoin sv. I want to connect this node app with the testnet & implement 3 simple functions in these applications: ...
0
votes
0answers
10 views

Is their a way to use Bitcoin's Testnet/LN Testnet within CLI without downloading Bitcoind?

I'd like to start working with Bitcoin's & Lightning's Testnet but don't want to download bitcoind on my current computer.
2
votes
1answer
38 views

Why CHECKLOCKTIMEVERIFY and CHECKSEQUENCEVERIFY opcodes have to be succeeded with DROP Opcode?

Opcodes that end in VERIFY generally do not leave anything on the stack. What's so different and the reasoning when designing these opcodes that CHECKLOCKTIMEVERIFY and CHECKSEQUENCEVERIFY opcodes ...
1
vote
1answer
28 views

getbalance and listaddressgroupings inconsistent

I imported a private key from my electrum wallet (testnet) to bitcoincore (testnet) as follow: In my electrum wallet, I copy the private key associated to the address ...
0
votes
1answer
23 views

1ML shows larger number of nodes comparing to other lightning network explorers

I found that 1ML displays almost double the number of nodes comparing to other lightning network explorers. I think 1ML does not provide the datasource but are you able to guess about the reason of ...
0
votes
0answers
32 views

problem in imported address

I have $10 at my address. I only imported that address in my other wallet, but it shows the balance of $0 and no past transactions. I tried my balance address of $18 and the same zero balance is shown ...
0
votes
1answer
30 views

I have a bitcoin utxo question

'A' has one bitcoin. 'A' tries to send a 0.5 bit coin to 'B'. Two utxo are created. First, "utxo" sends "B" 0.5 bitcoin. Second, "utxo" where "A" remits remaining bitcoins to "A" except for 0.5 ...
-1
votes
0answers
15 views

How can I generate keypairs, and check the public key against a known public key to check for a match?

Running on headless Ubuntu Linux. I would like to use this keypair generator, and check the public keys generated with each run against a single other public key. I know that "recovering" a lost ...

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