All Questions

Filter by
Sorted by
Tagged with
0
votes
0answers
3 views

Using importmulti to import a single address to keypool does not work

I create a wallet with private keys disabled. Then use importmulti like so: command curl --data-binary '{"jsonrpc": "1.0", "id":"curltest", "method": "importmulti", "params":[[{ "scriptPubKey": { "...
0
votes
0answers
3 views

Missing btc after -zapwallettxes and blockchain rescan

I sent a transaction in Bitcoin Core and realized that the fee was too low. I waited a few days to see if it would confirm and then wanted to try something else. I read that starting bitcoin core with ...
0
votes
0answers
7 views

Signing multisig raw transaction is returning error “JSON value is not a string as expected”

I am trying to sign a multisig unsigned raw transaction but keep getting "JSON value is not a string as expected", I am stumped and have tried many variations. Can anyone point out what I am doing ...
0
votes
1answer
13 views

Issue with sendrawtransaction missing inputs error code -25

Working with Bitcoin-qt 0.16.3 testnet Attempting to sendrawtransaction, however, receive following error: Missing inputs (code -25) From what I have read, this results from attempting to use ...
0
votes
1answer
14 views

How to build a p2sh who's scriptsig contains a Signature

I have created a P2SH address, funded it, and am attempting to move the funds with a TX. The redeemScript for the TX requires the TX signature (OP_CHECKSIGVERIFY), but in order to create this ...
1
vote
1answer
16 views

Timer-based consensus algorithm in blockchain

Assume that there is an algorithm that ensures: 1- That a full node chooses an honest random wait time. 2- That the same node has waited the specified amount of time before proceeding to mine a block. ...
0
votes
1answer
18 views

Importing private key to bitcoin node is slow. Can it be faster?

I have launched the bitcoin node and synchronized it. The issue is that importing the private key forces the node to scan the blockchain for the operations with the key. Is there a way to import the ...
0
votes
1answer
20 views

Does bitcoin qt need to synch before I can spend my change?

Sorry for the follow up question... i was trying to transfer my btc to a new wallet (believing the original one had been compromised). I sent 2 tiny test transfers of $1 then when they arrived in the ...
0
votes
0answers
9 views

How to build a bot for a bitcoin dice game

I would like to start learning more about any thing related with cryptocurrency. So at this moment dice game's are very present and we know very little about them. So the only i want to know, which ...
0
votes
0answers
8 views

Does Webjs support USTD coin transfer API

from WebJs , there is common API where we can use sendtransaction to transfer coins. But is there any sample or API of how to transfer USTD ? coins ? Appreciate if any can give some guideline or ...
1
vote
0answers
7 views

Bitcoin Core Blockchain Sync Fatal Internal Error - Corrupt Block - Linux

I'm trying to perform the IBD on Bitcoin Core 0.18 and I continually receive "Fatal Internal Error" at seemingly random intervals, closing bitcoin-qt and preventing me from fully syncing. Farthest I'...
0
votes
0answers
23 views

Was my transfer hijacked? [duplicate]

I had to take my computer into the shop for a new hard drive a week ago. Worried that my bitcoin wallet (Bitcoin qt) may have been compromised, i setup a new Electrum wallet and one on my iphone. I ...
0
votes
0answers
20 views

Trouble connecting to my lightning network node at port 9735

I'm on Windows 10. I'm already successfully running a full Litecoin node. Disabling Windows firewall has no effect on this issue. I am using litecoind-0.17.1 and lnd-0.7.0-beta. There's 2 things I ...
1
vote
0answers
20 views

How can I set up a simple single page store that accepts Bitcoin payments?

I am looking to set up a simple single page store. This store should respect the privacy of users by not requiring personal information where none is needed. I want to retain control of the funds, I ...
0
votes
1answer
24 views

How public-key cryptography secures bitcoin transactions from 51% attacks and Mining Attacks

I wanted to better understand how public-key cryptography avoids 51% attacks and mining attacks, also if this question is wrong please correct so that i can improve my research and provide me with ...
3
votes
1answer
357 views

Is Bitcoin PoW actually SHA256 + Merkle generation? Or have I misunderstood coinbase/append?

Miners can mutate nonce (32 bits) + time (mutates once a second). This allows for 232 (~4 billion) hashes per second. That's not enough anymore for our ASICs as they perform in the TH/s now rather ...
0
votes
1answer
10 views

Strange re-connection problem with python-bitcoinrpc

I am using https://github.com/jgarzik/python-bitcoinrpc to access the bitcoin core rpc. I have found a very strange re-connection problem. from bitcoinrpc.authproxy import AuthServiceProxy, ...
0
votes
1answer
27 views

How 51% attack is success? [duplicate]

In the paper by Nakamoto, miner can accept the mined block only if all transaction are valid. Assume that there are 5 miners in the world. 4 of 5 are honest that have 10% of 100% hash power and 1 of ...
0
votes
0answers
16 views

The time when the miner get a new block [duplicate]

I am wondering the time when get a reward for new mined block. Theoretically, miner will earn reward when they mine new block. but at that time, there is no way to verify that they really waste hash ...
0
votes
1answer
15 views

How do I broadcast an OP_RETURN transaction using bitcoin cli

I am using Bitcoin Testnet's command line (and GUI). I am curious how, using my own computer and equipment (I already used a faucet) I could send a transaction easily. I tried https://github.com/...
0
votes
0answers
19 views

About the balance of specific address

I have a question about how to figure out balance of specific address in the Bitcoin. There are many node in the blockchain(total # of nodes are 10000 based on 01/16/2019). but some nodes may have ...
0
votes
1answer
19 views

What is a mechanism of method how to get the data in the blockchain(e.g. bitcoin, ethereum)?

There are websites which have APIs that allow you to trace transactions and lookup information like specific address balances, etc. I am wondering how these web service providers are able to provide ...
0
votes
0answers
16 views

I mistakenly sent a bitcoin cash to bitcoin address [duplicate]

What can I do to recover my coin back to my wallet
2
votes
1answer
16 views

What happens when i change the encryption password of Bitcoin-Core wallet

What happens when i change the encryption password of Bitcoin-Core wallet? Is first pass lost forever , where is it saved - on the blockchain or on the wallet.dat file? What if encrypt wallet with ...
1
vote
1answer
44 views

Bcoin vs Bitcoin Core: query your node to list transactions of any address

I am trying to set up a Bitcoin node. It should be possible to query the node through JSON RPC to get a list of all transactions (including UTXOs) of any Bitcoin Address, which doesn't necessarily ...
0
votes
0answers
23 views

What role does public-key cryptography play in bitcoin transaction? [duplicate]

Explain in one word and kindly tell what is it exactly that public-key cryptography does in bitcoin.
0
votes
0answers
16 views

How to use Ripple or Stellar to transfer money? [on hold]

I am creating an international donor transfer site using physical money. I want to use RIPPLE or STELLAR technology, but for now I'm researching how to do this with the APIs of these platforms. Can ...
0
votes
1answer
33 views

How to find out if LND opening pending channels has a confirmation onchain?

After typing lncli pendingchannels I get a channel_point number, and when I put channel_point txid to check if it was confirmed onchain by typing: bitcoin-cli gettransaction "txid insert" I get an ...
1
vote
1answer
32 views

What makes Bitcoin transaction secure against attackers/hackers?

Wanted to know what is it that makes bitcoin transaction secure and make it less vulnerable to attackers and hackers
3
votes
2answers
232 views

To what extent does asymmetric cryptography secure bitcoin transactions?

Is there a specific attack or bug which asymmetric cryptography prevents during bitcoin transactions?
2
votes
2answers
35 views

Why does importmulti not support zpub and ypub?

As far as I can tell importmulti does not work with zpub/ypub. Why not? FWIW I prefer only to deal with xpubs, but I am curious.
0
votes
0answers
16 views

I ordered bitcoin currency off of the bitcoin.comwallet app and and I cant access my funds because of blockchain [on hold]

I ordered 55 dollars off of the app. I got an email saying it was approved and they sent me a url to a blockchain website that has how much I ordered and all I see is As you can see my btc currency ...
1
vote
1answer
29 views

How to calculate txid for segwit transactions?

I'm having difficulty calculating txid for recent transactions. I followed bip-141 at https://github.com/bitcoin/bips/blob/master/bip-0141.mediawiki For the first transaction in the first block found ...
0
votes
1answer
27 views

How to find where coin was picked up

I just recently sent two transactions at $2,500 a piece to a wallet I was given to transfer the money to. The money was transferred and the person has disappeared. I'm wondering how to find out where ...
0
votes
2answers
47 views

Help get specific address private key

I want to know if someone can help me with this situation: Two years ago I changed the password of my Bitcoin-Core wallet and forgot it. I sent my wallet.dat to some person, who claimed that will ...
0
votes
0answers
9 views

Cannot connect to Bitcoin JSON-RPC Server [duplicate]

I have just started getting my hands dirty with Bitcoin and I have successfully setup a pruned node on a Linux server but I can't seem to connect to this node from my Dev environment. I keep getting ...
0
votes
0answers
13 views

Non spendable bitcoin [duplicate]

I downloaded the app because the person who was helping me said they can’t transfer my profits to my luno account and he asked for all my login details now there’s non spendable bitcoin he’s saying I ...
0
votes
1answer
34 views

Public Key VS Wallet Address - What is the difference?

I am seeing a lot of contradictory information on why we now use Wallet Addresses rather than Public Keys. Some say that due to additional level of hashing (double hashing), Wallet addresses are ...
5
votes
1answer
107 views

How do BIP numbers get assigned?

Each BIP (Bitcoin Improvement Proposal) has a assigned number. For example BIP-2, BIP-42 and BIP-152. How does this number get assigned and by whom?
0
votes
1answer
18 views

spend a specifc UTXO

Is there any methods to pick a particular UTXO and send it to a particular address in bitcoin regtest mode using bitcoin-cli other than createrawtransaction and sendtoaddress
0
votes
1answer
28 views

How to accept USDT payments the right way?

We are developing an e-commerce solution and consider USDT to accept payments. At the moment as I understand we can generate many addresses (1 per transaction) with BIP32 spec approach. Based on Omni ...
0
votes
0answers
20 views

Where can I find a detailed network protocol spec? [duplicate]

I have been trying for a while to understand how the bitcoin network works, which I (kind of) do on a high level. However, all of the sources I read don't go into the details of the protocol that ...
0
votes
0answers
21 views

GekkoScience Compac+Raspberry Pi+bfgminer+Slushpool+Bitcoin core

I have installed bitcoin core on my laptop and I have created a slushpool account. Then I have installed bfgminer on my RPi3 using the following commands: sudo apt-get install autoconf libtool uthash-...
0
votes
1answer
18 views

How to check a signature on an arbitrary message?

I'm looking to have a p2sh transaction that inside the redeem script there is OP_CHECKSIG (or any other op-code) that verifies a signature on an arbitrary message (not a transaction). I have been ...
4
votes
1answer
237 views

Why is my “spendable_msat” much lower than “msatoshi_to_us”?

Today I was attempting to send a Lightning Network payment via c-lightning, version v0.7.1-64-gbb30104, using a channel I established in 2018. Strangely, my payment kept failing even if the ...
1
vote
1answer
14 views

How to import multi sig using importmulti correctly?

I create a 2 of 2 with createmultisig using 02254aba14091e45a9067fbe5b225b3863d1c49650226d583dcede06a7c33f8613 and 02ad64a03b7fc53c02f68eac04743b819bfeeabe6ca7007f473dbaf7c3570f5dc9 pubkeys. I then ...
1
vote
1answer
23 views

Viewing truly raw but decoded transaction data

I've previously been using bitcoin-cli decoderawtransaction to get human readable bitcoin transaction data but am just learning that it's not only decoding the raw transaction but also adding extra ...
2
votes
1answer
43 views

Why is the field 'hash' necessary in a bitcoin transaction?

Using bitcoin-cli decoderawtransaction I see results like... { "txid": "d2183b3ea763f41a30ec5ba6fbf6e5f32e0ca6a5e8761249c533fe22190f71f1", "hash": "...
0
votes
0answers
4 views

Newcomer to Canada (TAX Question)

Cryptocurrency Will i have to pay the income tax for that? If so, how much will it be? I can withdraw it here and it's not taxed. and then convert to CAD.
0
votes
1answer
13 views

How do I broadcast an “alert” message to the network

I am curious about how to broadcast an alert. I know that this is possible because the system to send alerts has been shut down and this probably won't work, but I am curious about how I can ...

15 30 50 per page