All Questions

0
votes
0answers
13 views

Can't perform remote JSON RPC to my Bitcoin node (C#)

I'm trying to perform a remote JSON RPC. It works fine using localhost but not if I try to do it from another computer. Here's what I have so far: int index = 0; HttpWebRequest ...
0
votes
0answers
5 views

Why my 2FA failed each time when selling BTC to withdraw cash from BTC atm?

Why my 2FA failed each time when selling BTC to withdraw cash from BTC atm? Does anybody has same issues?
0
votes
0answers
15 views

OP_EQUAL not working properly

I went to https://siminchen.github.io/bitcoinIDE/build/editor.html to try some bitcoin scripting and I wrote this script: <1PUzZ61FSVTn12CafJC85Vy1ts3BoFcXdU> OP_HASH160 <...
0
votes
0answers
12 views

Cant inititate network handshake with my full node

I am running a custom python script to initiate network handshakes with other nodes. While testing the code I decided initiate an handshake with my own node but I am getting a timeout error. ...
0
votes
0answers
16 views

Will non-segwit addresses still be able to send bitcoin in 5+ years?

My public address starts with 1,and I can currently spend the Bitcoin from it. However, as more and more transactions become only segwit based, will miners eventually just abandon verifying ...
-1
votes
1answer
9 views

How can I send bitcoin from my bisq wallets?

I feel terrible to ask this question as it is so basic that it makes me feel stupid to ask, but I am searching the web since days and cannot find an answer. Here is the situation: I have a Coinbase ...
0
votes
0answers
8 views

Cloud Mining certifications

does it exist some institution that certifies the security of cloud mining services? Something that verifies server pools existence, that follows the maintenance, that checks the financial strength or ...
0
votes
0answers
11 views

Buying and selling Bitcoin on a hardware wallet and not sending to an exchange

How can I buy and sell my Bitcoin from a Trezor or Ledger hardware wallet, without sending Bitcoin to an exchange? For example, are there any hardware wallets that allow you to keep your Bitcoins on a ...
0
votes
0answers
9 views

Bitcoind implementation in online website

im new to this world and i would like to understand better. i have an online platform and i would like to recive bitcoin payments from end costumers directly to my wallet without using 3d party. i ...
0
votes
0answers
15 views

I want to split bitcoin payment in multiple addresses using php

I want to implement bitcoin payment system in my website using php codeigniter. My basic issue was I want to split bitcoin payment in multiple addresses. How to do that? Please help me Thanks in ...
-3
votes
1answer
22 views

Will Bitcoin price reaches 15 k at the end of 2019? [on hold]

Will Bitcoin price reaches 15 k at the end of 2019 ?
0
votes
0answers
24 views

My unspent bitcoin is not in my wallet

I have a receive transaction that has processed and appears in blockchain. It appears as a unspent transaction. My problem is when while the transaction was processing my wallet began reloading the ...
0
votes
1answer
13 views

Bitcoin-cli cannot estimate fees

I am trying to send transaction using bitcoin-cli but I am constantly getting: admin@XXXX:~$ bitcoin-cli sendtoaddress "XXXXXXX" 0.1 "" "" false true 5 "ECONOMICAL" error code: -4 error message: Fee ...
0
votes
2answers
43 views

Does blockchain work like Git?

So the blockchain is a linked list structure, but the transaction chain is a DAG, that means that bitcoin works a bit like Git?
0
votes
1answer
31 views

Bitcoin API with bech32 support

Since a while, I have been using the insight-api to view bitcoin transactions. However, recently I have found out that bech32 addresses are not supported. Now I try to fix this issue and I am open ...
-2
votes
0answers
10 views

How to find the source code of botfather bot? [on hold]

I am trying to build a bot, and I need to find the source code of the botfather or any similar ones.
0
votes
2answers
9 views

What is a cryptocoin made of?

I want to know whether a cryptocoin is made of some piece of code or it is kind of a bill that says a person has transferred conceptual coin to another person when a transaction is published. If it is ...
0
votes
1answer
53 views

Chicken and Egg confusion over Bitcoin generation

If Bitcoin is rewarded through mining, and mining is the process of packing some transactions in a block(and adding that block successfully to the blockchain), and on the other hand, a transaction ...
2
votes
1answer
25 views

How to get the outbound and inbound capacity of a node using LND?

I expected to find an option on lncli to get the exact inbound and outbound capacity of my node, but this is not the case. What is the best way to have this information?
0
votes
1answer
33 views

How does one mine a fraction of a bitcoin?

I'm new to the whole bitcoin stuff. The stuff I've read about mining so far told me that when a node in blockchain finally finds the correct nonce for a block that can be accepted in blockchain, it ...
1
vote
1answer
22 views

Under what circumstances will a full node disconnect a peer?

I know a full node will disconnect from a node if that node "misbehaves". For example, a node's connection will be dropped if it sends too many messages that don't follow the rules (what rules?) and ...
6
votes
1answer
2k views

How do I delete a Bitcoin full node from my hard drive?

I was using Bitcoin Core as my wallet (recently installed), but a couple of hours of syncronizing, all of a sudden, I have no space at all in my hard drive. I deleted bitcoin Core, but that did ...
1
vote
1answer
17 views

How to listsinceblock mempool transactions?

I am using listsinceblock RPC call to show me transactions relevant to my wallet addresses only. Absolutely useful feature, but I cannot figure out how to include also mempool transactions. Is there ...
0
votes
1answer
17 views

Hash of backed up wallet file not the same as hash of wallet currently in use

A couple of months ago I had backed up the wallet.dat (I use bitcoin-qt) file and saved it some place else. Lately I've opened the data folder for the current running node (also bitcoin-qt) and I ...
0
votes
0answers
19 views

Bitcoin point multiplication

Does anybody know or have idea how in python do point multiplication, or point inverse. I dont think about scalar multiplication (aA), I know that. I need AB
0
votes
1answer
15 views

Can a Trezor accept/use a private key created independently offline?

Can I create a private key using bitaddress.org offline and then use that private key in a trezor wallet? Also will the trezor use that private key to produce a mnemonic phrase?
0
votes
0answers
19 views

How can Crypto Exchange earn mining fees on your own?

How can Crypto Exchange earn mining fees on your own? Is it possible to buy some place in a block or kind of tokens in advance from miners?
0
votes
1answer
28 views

Can two bitcoin chains co-exist if one copied the code and ran a parallel chain?

If someone forked the code without changing any of the fundamental properties and connected nodes / miners, could they not disrupt the main (original chain)?
-2
votes
0answers
12 views

Missing funds from vertbase to ravenwallet

I bought digibyte on Vertbase, then sent it to my Ravenwallet. I see confmation from vertbase that it went, but never showed up in Ravenwallet. Did i screw up ?
0
votes
1answer
38 views

Can I be refunded if my bitcoin got hacked? [on hold]

It is possible that if crypto exchange got hacked, I would be refunded and if I use hard wallet can I still trade bitcoin even if it is on hard wallet or I have to move it to exchange before?
0
votes
0answers
18 views

Is the current hashcash proof of work system vulnerable to attack by quantum computer?

I've been caught up in the post-quantum cryptography scene for a little while now, and understand that the RSA or ECC cryptography inherent in a cryptocurrency network can be easily broken by a ...
1
vote
0answers
15 views

Bitcoin Core 0.18.0 in Docker container: Connection refused

This is likely me not understanding how Docker works, but I've tried everything I can think of. I'm trying to start bitcoind in regtest mode inside a Docker container, then execute JSON-RPC commands ...
0
votes
1answer
14 views

bitcoind jsonrpc bumpfee not returning hash of newly created transaction

I'm trying to implement replace by fee functionality with bictoind (v18) and bumpfee rpc call described here It works by mean that new transaction is created with higher fee, but result should be: { ...
0
votes
2answers
46 views

I’ll pay whomever can help me Bitcoin Cash from blockchain wallet to Coinbase wallet with Bitcoin address [duplicate]

I've read now a 100 or so questions here with no clearcut answer nor update after they were given advice. I had money in my Bitcoin Cash wallet on Blockchain. I wanted to send the money to my Coinbase ...
2
votes
1answer
26 views

Is this a collision attack or a 2nd-preimage attack?

This question revolves around Bitcoin Optech newsletter #51 (1) and an email thread from the bitcoin-dev mailing list (2). I asked the same question in a reply-email of the newsletter and the response ...
0
votes
1answer
16 views

Is BTCFrog bitcoin QR code generator hacked?

The following URL is self explanatory. It is trying to generate a QR code requesting 0.005BTC at the shown address http://www.btcfrog.com/qr/bitcoinPNG3.php?address=31oLAAQDmuRAGfkviHPDXFgV15To4idott&...
2
votes
2answers
41 views

How to search for TXs using only the PublicKey linked to those TXs?

The quest is to define a method for searching TXs on the Bitcoin blockchain using only a PublicKey in HEX format - as opposed to searching TXs by popular terms like wallet ID, txid, hash, etc. I ...
0
votes
0answers
33 views

Bitcoin Wallet QT - passphrase

Hello when the Bitcoin Core wallet is loading it shows: Bitcoin Core version 0.14.2. When the wallet is loaded, the heading is still bitcoin core wallet. however under about it shows Qt version 5.7. I ...
1
vote
1answer
50 views

Why was giving someone else my 12 word backup a bad idea?

I lost my bitcoin last night when someone on blockchain support asked me to tell them my 12 word backup in order to reverse my bitcoin transaction that was unconfirmed at that time. Finally, my ...
0
votes
0answers
27 views

Generating TXID from transaction's data

As I understand, we can generate a TXID by hashing transaction data through SHA256 twice, and as you know probably, A bitcoin transaction is just a bunch of data that describes the movement of ...
0
votes
1answer
30 views

How to properly use importmulti with coldcard wallet BIP84 xpub?

I have seen the HWI scripts but I am trying to do this while keeping my Coldcard airgapped. First I create a wallet in bitcoin core with private keys disabled. I dump the wallet summary onto the ...
0
votes
0answers
20 views

Android mobile app 'cold' wallets that allow cold signing TXs, saving the file to an SD card and loading updates into it by file? [on hold]

Can anyone suggest Android mobile app cold wallets that allow cold signing TXs, saving the file to a micro SD card and loading updates into it by file in said SD card? I would be doing this on a ...
0
votes
0answers
34 views

Bitcoin Cash in my Blockchain wallet was accidentally sent to my Bitcoin wallet with Coinbase [on hold]

I've read now a 100 or so questions here with no clearcut answer nor update after they were given advice. I had money in my Bitcoin Cash wallet on Blockchain. I wanted to send the money to my Coinbase ...
0
votes
0answers
35 views

recovering wallet [duplicate]

0 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
26 views

How do I mine BTC using normal home computers if I have multiple computers? [duplicate]

I can get nearly 100s of computer at my place. how can I put them to work so that they can mine for me whenever its active.
0
votes
0answers
8 views

I can´t open BFGminer

I try to open bfgminer, but I can't. The window appears but immediately closes. What can I do? the window is like a cdm.exe
0
votes
1answer
19 views

How does Trezor recover all public keys from different blockchains?

I understand that the Trezor is a HD wallet, meaning private-public keys are generated through a deterministic, hierarchical expansion of the root seed. However, when I am in a process of recovering ...
0
votes
1answer
38 views

Find sender's public key in SegWit Transaction

How can I retrieve the sender's public key in a Segwit transaction? For example: https://www.blockchain.com/btc/tx/3179d18d6f36fa77b88909496535485d8188d96b79d295843789a9e0ff6c3e6a I can happily ...
0
votes
1answer
31 views

importmulti with BIP84 derivation always fails

I have been trying to test importmulti with BIP84 derivation like so: bitcoin-cli -rpcwallet=BIP84Test importmulti '[{ "desc": "wpkh([18734cbe/84'/0'/0']...
-3
votes
0answers
72 views
+50

What technical/usability differences are there between Bitcoin and Ethereum as a digital currency?

Based on my limited research, Bitcoin and Ethereum were created for different purposes. Bitcoin was created as a digital currency, and Ethereum was created as a platform to run distributed ...

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