All Questions

0
votes
0answers
35 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
52 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 [duplicate]

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
32 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
35 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
40 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
32 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
78 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 ...
0
votes
1answer
22 views

These testnet outputs are not making sense to me

Today I took some time to mess around with the bit Python library, which I find pretty easy to use. I have been wanting to do some Bitcoin programming for a while, so I decided to create a simple web ...
0
votes
1answer
14 views

Using importmulti with internal set to true does not add any change keys. What am I doing wrong?

First I call: curl --data-binary '{"jsonrpc": "1.0", "id":"curltest", "method": "createwallet", "params":["ColdWallet", true] }' -H 'content-type: text/plain;' http://user:password@127.0.0.1:18332/ ...
5
votes
1answer
116 views

What was the longest held UTXO ever spent?

What output had the longest period between when it was created and eventually spent?
0
votes
1answer
15 views

Can I connect to a node as read-only?

In my Electrum wallet I can open the Network Window and view Nodes I'm connected to. Here's an example: electrum4101870.fullhealth.net. I can also find public nodes at https://bitnodes.earn.com/nodes/...
0
votes
1answer
42 views

Searching for old bitcoin “accounts “

I recall accepting bitcoin payment several years ago when the concept was fairly new. My trouble is, I don’t know what happened to the bitcoin after the receipt. What methods are available to search ...
0
votes
1answer
35 views

How exactly do transactions work?

When I search for transaction in bitcoin I am able to find explanations which tell me that there are e.g. two persons A and B and A wants to tranfer a number of bitcoin to B. Imagine A wants to pay 2 ...
1
vote
1answer
22 views
0
votes
0answers
10 views

How to use bitcoind-rpc.js to create raw transaction?

I am using bitcoind-rpc in javascript but i couldn't use the function/api that require 2 or more arguments. For example, what is the proper format of the arguments needed for createRawTransactions? ...
0
votes
0answers
10 views

bitcoinsv debug.log file not created on startup ubuntu 16.04

I have built the Bitcoin SV source code and am running a Bitcoin SV daemon on an Ubuntu 16.04 machine. The problem is that when I run the daemon, a debug.log file is not created at the path ~/.bitcoin ...
10
votes
2answers
2k views

Long term BTC investing

my question is, what is the safest way of buying and holding bitcoin for the long term? And I mean 10-20 years, either a lump sum or through dollar cost averaging, is a paper wallet the answer? Or ...
0
votes
1answer
45 views

How does Bitcoin makes sure that nobody can duplicate a transaction?

I understand that when creating a transaction, you send in data, the hash of that data, and a signature that is created using the hash of the data and your private key. However, what is stopping ...
0
votes
1answer
33 views

2nd 'air-gapped' computer / cold wallet setup for travel

I travel quite a bit and don't want to lug around a 2nd 'air-gapped' computer. I know that connecting a hardware wallet like a Ledger Nano S to the Ledger Live desktop app running on a computer that's ...
2
votes
1answer
39 views

HTLCs and commitment transactions

Why commitment transactions can't simply be HTLCs instead of contracts revocable by having the second half of the Revocable Private Key? I mean, why bother to create a Revocable Public Key from two ...
0
votes
0answers
10 views

Checking a multisig transaction using RPC

For examaple famous transaction with multisig. Is posssible using RPC calls (getrawtrasaction and decoderawtransaction and other?) do: - ensure that transaction is multisig - find number of signings ...
0
votes
1answer
21 views

Unable to import wallet back on phone [on hold]

Does anyone know how to fix wallet, When trying to import error keeps occurring advising. could not access the wallet at the server please check: .The password of recovery phrase( if set) .The ...
2
votes
1answer
23 views

What's the consensus on using a non-networked VM as a cold wallet/airgapped computer?

I'm wondering if connecting a hardware wallet like a Ledger Nano S to the Ledger Live desktop app running on a computer that's connected to the internet not considered a 'fully cold' wallet setup. How ...
2
votes
2answers
446 views

What is a txn? How can it be invalid?

I read this in a IRC exchange: verifies your txns against a random node that you don't control. if for some reason that node went rogue, you might have accepted an invalid txn What is a txn?
0
votes
0answers
17 views

How to validate derivePath for HDWallet?

I am generating addresses for HDWallet while importing account using the Mnemonic Phrase. So I am letting the user enter Mnemonic Phrase and derivePath both. Before generating addresses, I want to ...
0
votes
0answers
13 views

I try to get crypto account(asset) by call PHP page. but it doesnt work. until now I dont understand a basic rules(concept) [on hold]

I'm Korean. My excahnges is UPBIT.com I'm trying to get my asset info by using UPBIT Apis. My PHP code doesnt work. There is 3 files having shown bellow in same folder of PHP server [3]: @link ...
-2
votes
0answers
21 views

My Balance show no balance when try to redeem using private keys [on hold]

My balance is 50 when I check in https://chain.so/address/DOGE/D6RCzYLv83Chj269Gbau9mKVNzZ5ibVy35 https://dogechain.info/address/D6RCzYLv83Chj269Gbau9mKVNzZ5ibVy35 but in the https://live....
-1
votes
0answers
24 views

Bitcoin Payment Gateway with GOlang [on hold]

I was trying to create an API which integrates with bitcoind on my server, rpc calls can be made by the web api for the purpose of a payment gateway for bitcoin in Golang. My question is how to ...
1
vote
1answer
32 views

How can I import the Mini Private Key of a physical coin?

I have a physical Litecoin based on a Casacius Bitcoin. I have the public key and see that the Litecoins are there. Peeling back the seal/sticker revealed a Mini Private Key, but I'm having trouble ...
0
votes
1answer
29 views

Creating multiple clients inside a single lnd node

I am trying to create hot wallets using the lightning network but I don't want to create a new node for each user. Is there a way to have multiple users be able to use a single lnd node?
0
votes
1answer
34 views

My passphrase doesn't work and I can't send any bitcoins from my wallet

When I encrypted my wallet, I created a passphrase and wrote it down very carefully. Now, when I try to make a payment to an address, I received the following message: "Wallet unlock failed: The ...
0
votes
1answer
35 views

When I use importmulti with an xprv it never imports the private keys. What am I doing wrong?

When I call: bitcoin-cli getdescriptorinfo "pkh(tprv8iDvhA6eaMDbRuH3D2DTNuH6N6LvMTVrcv7z6sVxyyYvThSaCSa3i3qFVqUgVL4NbVkACxjx3KPWLoP5jvDU3i16hjTnzEFnZuqsnTJ5F4n/*)" it returns: { "descriptor": "...
0
votes
2answers
52 views

Missing transaction

I made a transfer on 6/16 from one wallet to another. Despite verification on blockchain.com, the coin is gone from the sending wallet yet never arrived in the receiving wallet. The receiving wallet ...
0
votes
1answer
29 views

Can you make altcoin vanity addresses out of those of Bitcoin?

I generated a Bitcoin vanity address having a string “TEST” in it. > vanitygen -v -1 -F pubkey -C BTC 1TEST Generating BTC Address Prefix difficulty: 264104224 1TEST Difficulty: ...
-2
votes
0answers
37 views

Unexpected NEO Transfer

On 12/27/2016 I started a token transfer of 11,067 NEO to my Bittrex Wallet, but for an unknown reason 20,843 NEO have been transferred in total. The problem is that 9,776 of the 20,843 NEO Coins ...
0
votes
1answer
35 views

Can Bitcoin and Bitcoin Cash potentially have the same address?

Because Bitcoin Cash is forked from Bitcoin, what happens if two separate users create a wallet, could their address potentially be the same? Let's call that address xyz. Then if someone sends money ...
-2
votes
0answers
25 views

Given Transaction JSON Chart Find Coinbase Transactions

"x" : { "lock_time" : 581149, "ver" : 2, "size" : 590, "inputs" : [ { "sequence" : 4294967294, "prev_out" : { "spent" : true, "tx_index" : ...
0
votes
0answers
21 views

My Bitcoin transaction has 173 confirmations but it won't go trough [on hold]

I'm sure i sended it to the right adress. Been waiting for a day now
3
votes
1answer
54 views

Has Bitcoin Cores encryption wallet security ever been bypassable?

Every few years there seems to be an exploit found in Trezor that allows people to bypass the security. I was wondering has there every been the same case for Bitcoin Core wallet encryption?
0
votes
1answer
57 views

Bitcoin ATM paid out to a phone number, how can the funds be retrieved?

A friend was trying to send me bitcoin using a Bitcoin ATM, she sent the funds to "her phone number" instead of my wallet QR code. The ATM indicated that Bitcoin was sent, but my friend doesn't even ...
-1
votes
0answers
18 views

Question 58114 refers to python module base58

See Convert WIF to private key When I tried out the code base58 would not import and it doesn't seem to be listed in python reference documents.
-1
votes
2answers
26 views

getting address from public of ScriptPubKey vs ScriptSig

Recently I read some articles about BITCOIN protocol and it's transaction. I understand(maybe it is incorrect) these rules: An input is what we call an output when you're spending it in a transaction....
2
votes
1answer
362 views

Are vanity addresses Vanitygen generated really safe to use?

I’m not talking about whether Vanitygen can crack an any existing wallet or not. I know it is practically impossible, considering the computational resources required. But what if, it’s to crack ...
1
vote
0answers
48 views

demonstrate tracking some bitcoin transactions with a program like an explorer

Recently I started to read BITCOIN protocol and it's events when a transaction created. I want to create a program a bitcoin explorer. as you know probably, Each non-coinbase input spends an outpoint ...

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