All Questions

0
votes
0answers
7 views

iOS wallet with Bech32 and pub

Is there a private iOS bitcoin HD wallet with Bech32 support and access to your extended public keys out there?
0
votes
0answers
4 views

need help recovering wallet when i had to format SSD

I am not exactly sure what I need to do and I do not want to accidentally overwrite my disk... I may have already done so. After searching my web history I have found the BTC address that my BTC is ...
0
votes
0answers
17 views

How can I import my XRP private key online?

How can I use my XRP paper wallet private key to send XRP to another address?
-5
votes
0answers
18 views

Will the Blockchain 4.0 have any Impact on Bitcoin? [on hold]

4th Generation Blockchain aKa Blockchain 4.0 is here. I'm curious about the future of Bitcoin. Since we know bitcoin started its journey back in 2009. Now, we are in 2019. The technology is changing ...
0
votes
1answer
19 views

Assets when cryptocurrency gets delisted (as Bitcoin SV or Bitcoin Cash)?

What happens to assets that you owe when a cryptocurrency gets delisted? I'm thinking concretely in the case of Kraken, Binance, ShapeShift in delisting Bitcoin SV or SBI holdings delisting Bitcoin ...
0
votes
0answers
6 views

Orphaned block probability ratio

The probability of orphaned blocks should also take into consideration the proportion of the total mining hash power that the miner has. If M_i and M_j are 2 miners with p_i= 2* p_j (proportion of ...
0
votes
0answers
17 views

Do SPV nodes sync “headers-first”?

Headers-first sync is defined somewhat by BIP 130 and expanded upon with compact block relay in BIP 152. I believe this is the commit in which it was added to Bitcoin Core. The result is that Bitcoin ...
0
votes
1answer
13 views

Is mining using with cpu(some web sites) fake or not

There is a rule about every browser : Browser can not access client's RAM-CPU-HARD DRIVE-WEB CAMERA-And other resources of client's machine. Am i right? So how some web sites do mining using client's ...
0
votes
0answers
20 views

Isn't Bitcoin just a bubble? [on hold]

Is Bitcoin and cryptocurrencies in general the future? I am genuinely interested in other people's view point.
3
votes
2answers
230 views

Would it be possible to dictate a bech32 address as a list of English words?

One of the reason for bech32 address is: "it'easier to dictate it over the phone". Is there an algorithm to convert a bech32 address into a list of English words that would make it even easier? ...
1
vote
3answers
28 views

What does channel num_updates mean?

Some LND wallets provide a channel's "Number of Updates". Here's an example from Zap Desktop: The LND gRPC API Channel Reference cites a property called num_updates. The description of this field is ...
2
votes
0answers
17 views

How to transmit fraudulent commitment transaction on lightning channel?

I'm trying to simulate a fraudulent commitment transaction on lightning. How would you submit an earlier commitment transaction. It doesn't seem like this can be done with a command. Does anyone know ...
1
vote
1answer
20 views

Is there a way for me observe network traffic of bitcoin exchange?

I was wondering if there is a way to observe a network traffic/packet of bitcoin exchange. I want to know what's in the packet when I send a bitcoin from one wallet to another. Thanks.
0
votes
0answers
19 views

My transaction has been on pending for 48hrs [duplicate]

Please I need help and I need to know how long it will stay and I don't change my transaction fee
2
votes
1answer
47 views

Export Xpubkey from Bitcoin Core

How do I export my HD wallet's Xpubkey in Bitcoin Core? Do I construct it using the value of "hdseedid" returned by getwalletinfo?
1
vote
1answer
36 views

Is the bits field a unique representation of the target?

The bits field is the compact representation of the target. Example: bits: 1d00ffff target: 00ffff0000000000000000000000000000000000000000000000000000 bits: 1cfff00 target: ...
1
vote
1answer
24 views

How does the 51 percent or 2/3 majority voting rule work?

For a block to be added to the chain, it needs vote from majority of miners, is that correct? If yes, does that mean a single block gets worked upon by all of the miners?
0
votes
1answer
36 views

Hi can someone help me with this btc transaction?

https://www.blockchain.com/btc/address/17GNYZZ9y1Woyv5JdqLcAEJeYaQyRDTx2D it is not showing up in the bitcoin account it should be in????? Blockchain and electrum as my personal wallets, but this ...
0
votes
0answers
12 views

Which derivation paths are used by the Abra wallet?

Abra have stated in a reddit comment that their non-custodial HD wallet uses custom derivation paths to convert the user's BIP39 mnemonic seed into cryptocurrency address/key pairs. Has anyone figured ...
-4
votes
0answers
42 views

Fake btc transaction [on hold]

Is it possible to make a false btc transaction, with a false tx and without using funds?
0
votes
1answer
14 views

How does Internal Keychain exactly work?

I understand that an internal keychain is used to receive a change of payment when I pay someone. For example, I pay $20, but it costs $17, so I get $3. But what I don't understand is how can there ...
0
votes
0answers
14 views

how to implement stack data structure using haskell? [on hold]

i won't perform stuck function like this (push, pop) using Haskell that are special for functional programming
0
votes
1answer
16 views

Question about nondeterministic wallet

I was reading https://github.com/bitcoinbook/bitcoinbook/blob/develop/ch05.asciidoc#user-stories and ran into this statement. In the first bitcoin wallet (now called Bitcoin Core), wallets were ...
0
votes
2answers
30 views

Is the time taken for the verification of a transcation not much relevant?

By verification I do not mean the puzzle solving/hash calculating part but the part involving searching all of the blocks to check if the transaction is valid or not? For example if A transferred ...
0
votes
0answers
19 views

My transaction has been on pending for 27hrs [duplicate]

I need to know how to confirm my transaction it's been on pending for a while and I really need the transaction
-3
votes
0answers
35 views

Enigma “secret contract” and concealing transactions history: Is it possible?

Enigma protocol is a second-layer, off-chain network that aims to solve privacy issues in blockchain. However In Enigma blog, there is an article (Link to Article), explaining the secret contract, ...
0
votes
0answers
14 views

How do I include mining in this alternative Blockchain application of mine?

I am making a blockchain based messaging application. How it works is like this: there is a server side program and a client side program. The clients are the nodes which have a Public and Private Key ...
1
vote
2answers
34 views

how to transmit commitment transaction (unilateral close) from lightning network channel

How would you transmit a commitment transaction from a lightning network channel instead of closing the channel? I am working on implementing a watchtower and I first need to simulate a double spend ...
0
votes
1answer
38 views

Can someone explain what exactly is derived address?

Let's say my mnemonic words are army van defense carry jealous true garbage claim echo media make crunch When I used https://iancoleman.io/bip39/#english, the section, Derived Address, showed ...
0
votes
0answers
12 views

LND application for InitWallet [on hold]

who can help me fix below issue on LND function(based on PyCharm)? the problems on the InitWallet from LND Application. GenSeed that can run pass and get the response from below resource code. but ...
0
votes
0answers
16 views

how to run a query for size of tranactions?

how do I run a query for size of transactions in terms of size of bitcoin? Or better yet, is there a key for all the output?
0
votes
1answer
25 views

What can I do with Account Extended Private Key and Account Extended Public Key?

I have been reading about Account Extended Private Key and Account Extended Public Key that derives from the Master Private Key and Master Public Key, but I still have some question about their ...
0
votes
1answer
32 views

I formated my hard drive with bitcoin core on it

First timer here ...I downloaded bitcoin core a few weeks ago until last week where it still had not synced so i started all over...I was originally waiting for BTC CORE to synchronize(I missed the ...
1
vote
1answer
34 views

Script Null into raw trasaction bitcoin core

I'm developing a parser for bitcoin core and into the alpha test of the parser,I noticed than the script bitcoin core are null and the hash raw transaction exist. An example: for this transaction the ...
2
votes
2answers
51 views

Why is the value field 8 bytes in transaction output when it can be achieved with 7 bytes?

Bitcoin uses a 8 bytes value field in the transaction output. However, the total supply of bitcoin is capped at 21M. Theoretically, even if all the 21M bitcoins are transferred to a single address, ...
0
votes
1answer
16 views

What are the web3py equivalent for communicating with bitcoin in Python?

I am fairly new to working with Python, I have a requirement where I need to perform some basic bitcoin operations on my local system rather than relying on some external API's, those function mainly ...
0
votes
2answers
52 views

Checking if a receiver has enough coins

How do miners verify the blockchain transaction history to check if the sender has enough money if the address can be changed at any time?
3
votes
2answers
529 views

How was the dust limit of 546 satoshis was chosen? Why not 550 satoshis?

Is there a reason why 546 satoshis was chosen as dust limit instead of 547 or even 550 satoshis, historically?
0
votes
0answers
13 views

HashRate After 24 hours reduce

I Have two whatsminner m3x , when I start mining hashRate be 12 , after 24 hours hash rate be between 2 and 3 , and I don't know why?? what I must to do? , my device connect to Slushpool
1
vote
1answer
23 views

Create multisignature wallet from xpub keys in bitcoin core

I can create Multisignature wallet electrum with 2 xpub keys. How can I create bitcoin core to do that? Standart use; Add a multisig address from 2 addresses bitcoin-cli addmultisigaddress 2 "[\"...
1
vote
1answer
31 views

How chaining the blocks protect against altering data?

I am confused with the block chaining, as i know a block header contains a reference to the previous block header hash with the merkle root and other fields. This header hash is related (computed) to ...
1
vote
1answer
369 views

If the nonce is 32 bits why the proof of it is difficult?

I want to know why mining of nonce is difficult? The nonce is 32 bits (4294967296) and a high level Nvidia graphic card can check and mine it in a second. why do we need a pool to mine a blockchain?...
0
votes
1answer
47 views

Question about Python library coincurve/libsecp256k

I am a noob with cryptography, just trying to learn using python and the library Coincurve ( https://github.com/ofek/coincurve ) which is a mature Python binding for libsecp256k1. The following code ...
3
votes
2answers
25 views

Looking for whitepapers on pool-resistence mining

I have seen several cryptocurrencies list the feature of decentralization of mining through ASIC-resistance and pool-resistance. However, I have not yet found any whitepapers which explain how the ...
0
votes
0answers
11 views

Listaccount CLI command shows balance, but getbalance shows different balance

I was sending some coins to myself using sendtoaddress, through the address I created using ./someBTCfork-cli getnewaddress When I run ./someBTCfork-cli getbalance "" My balance is 4999 When I ...
0
votes
1answer
28 views

any faucet that can give even 1 satoshi of BTC immediately?

Is there any faucet that can give even 1 satoshi of BTC immediately without waiting til you have some amount, and without faucethub account?
0
votes
0answers
23 views

Is 10K full nodes enough to bitcoin to avoid 51% attack?

As I know bitcoin has about 10K full nodes. And the question is in my mind is that: This number is not huge! If someone has 6K servers, Can control the bitcoin via 51% attack? I was thinking if ...
4
votes
1answer
32 views

Can bitcoin core verify a third party blockchain download?

If you were to obtain a copy of the bitcoin blockchain, i.e. a copy of someone's data dir excluding his wallet files on a removable drive or other storage medium, could bitcoin core verify that or not?...
0
votes
0answers
8 views

compare bitcoin prices at different exchanges in one chart

Im having a hard time finding an online place where i can see the prices of bitcoin (or other coins) - from different exchanges. I mention i want a chart. And the ability to look into historic data. ...
1
vote
0answers
37 views

18 word mnemonic seed that contains words outside of BIP39 wordlist, struggling to recover BTC

I recently recovered a document containing information relating to some BTC I purchased in 2015. I only have: a passphrase/password, an 18 word mnemonic phrase(the majority of which are not in the ...

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