All Questions

0
votes
0answers
3 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 ...
-2
votes
0answers
12 views

How to implement cryptocurrency trading? [on hold]

we have a new project to create a cryptocurrency trading. the API's i see for this are coinbase, bithump, binance and others. then you need to register to have an API keys and other keys need for the ...
0
votes
0answers
6 views

Research Data: All cryptos and consolidated historical prices (daily) [on hold]

I am looking for a source, that reliably collects all the data on all the cryptocurrencies and consolidates that. Preferably in OHLCV-format, vis-a-vis the USD or BTC and not deleting any "dead" CCs (...
0
votes
0answers
10 views

Can I safely delete database.bak from wallet folder?

In order to save space. I cleaned it up and now my bitcind in freezing, but this might not be the cause.
0
votes
1answer
36 views

ScriptCode field in P2SH-P2WPKH BIP-143 Test Vector

I'm trying to understand the meaning of scriptCode in the context of spending a P2SH(P2WPKH) UTXO. I've already read the following answer to a similar question, but it does not fully address my ...
0
votes
0answers
16 views

api limit workaround

Are there any ways to avoid limitation for api calls (5/sec)? I need the info about transactions and balance (of certain account), UTXOs and the ability to broadcast my transaction. Currently I am ...
0
votes
1answer
13 views

How to spend a multisignature, CLTV time-locked UTXO?

I am using this locking script with libbitcoin explorer to create a bitcoin testnet transaction: bx script-to-address -v 196 "[efa716] checklocktimeverify drop 2 [...
1
vote
1answer
18 views

lightning-cli listnodes is empty. Am I missing something?

I want the result of listnodes like the following. How can I do that? { "nodes" : [ { "nodeid" : "028e5a8e86540f703e1f58880d35d1e318a54c27d84ec1edbcde04a78ed4469a1e", "alias" : "???? ...
-2
votes
1answer
20 views

How many wallets don't support address reuse? (for refunds)

I have implemented an automated bitcoin refund function that sends funds back to the address that was used to sign the incoming transaction. How many wallets fail to support address reuse/refunds? ...
0
votes
1answer
18 views

What is local Bitcoin?

I was listening to the Pompliano podcast and there was this really awesome guy talking about how he has been able to use local Bitcoin to stay afloat in amidst a collapsing economy and society in his ...
0
votes
1answer
25 views

What happens when invoices get paid more than once?

Until today I thought, that lightning invoices can only be paid once. Where do the funds go when an invoice is paid more than once? Will every payment reach the destination node or can reusage be ...
0
votes
2answers
37 views

The order of the generator point G used in bitcoin

Hi I was just wondering how the order of the generator point G used in bitcoin was actually calculated. From the specification listed http://www.secg.org/SEC2-Ver-1.0.pdf for secp256k1 I can see ...
0
votes
1answer
13 views

Low Hash Rate Results in No Payment [on hold]

Thank you for taking time to read this.I'm currently having problem with my mining project.I'm rather new to mining and I'm not mining for economical reasons but actually I like to keep my PC busy and ...
0
votes
1answer
14 views

Why do LedgerJS and Electrum, using the same Nano S and derivation path, not refer to the same Wallet?

I start Electrum in my cmdline like this: ./Electrum --testnet I connect Ledger Nano S to my laptop. In Electrum I make a new HD Wallet with Derivation path using the Nano S's private key as seed: "...
0
votes
2answers
22 views

Transactions with multiple input UTXOs and multiple output UTXOs

Suppose a transaction t has 5 input UTXOs each worth 1 BTC, each unlocked by a different sending address Ai. The outputs of that transaction are 10 UTXOs of 0.5BTC each, each locked by a different ...
0
votes
1answer
9 views

Security of ChaChaPoly (IETF rfc7539) in the noise protocol framework of the Lightning Network

According to this paper ChaChaPoly is secure against chosen known plaintext attacks. I wonder however if that security assumption is weakened by a lot since messages sent on the transport layer of the ...
0
votes
0answers
29 views

How to make a bitcoin block explorer? [on hold]

I need to create an block explorer for bitcoin. what is the most reliable way to create it.
2
votes
1answer
18 views

PSBT (BIP-174, Partially Signed Bitcoin Transaction) Ordering of keys

When serializing a PSBT (BIP-174, Partially Signed Bitcoin Transaction), I cannot find any information if the keys should be ordered when serializing the PSBT? Under the "Test Vectors" section for ...
0
votes
2answers
26 views

If transactions are changed in memory how miners know it?

If Alice requests something to bob, then Alice sends her public key and Bob encrypts message by using Alice's key. Bob uses his private key and hash function to make a signature. After finishing this ...
0
votes
0answers
27 views

Is there any hope to recover my wallet? [on hold]

I tried to login to my Bitcoin wallet. I use the one at blockchain.com. I received the authorization email but it wouldn’t let me in after authorizing. There is the trouble logging in page. I was ...
0
votes
0answers
31 views

OP_CHECKDATASIGVERIFY not working

I'm trying to generate a signature and pass it through OP_CHECKDATASIGVERIFY as part of a P2SH address on a regtest network. This results in the following: Public Key: ...
1
vote
3answers
657 views

What is the reasoning behind the choice of 2^256-2^32-977 for the prime on the secp256k1 curve?

In Bitcoin's elliptic curve (secp256k1), the prime p = 2^256 - 2^32 - 2^9 -2^8 - 2^7 - 2^6 - 2^4 - 1 the generator point Gx = 0x79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798 ...
0
votes
1answer
21 views

have 12 word phrase need to find wallet

I have my 12 word passphrase and would like to see the contents of my wallet how do I see this wallet on a new app or site?
0
votes
1answer
14 views

remote channel message: Unreasonable to_self_delay = 2016 (max=2000)

so tried to open a node whose owner opened the port but I get this message above: remote channel message: Unreasonable to_self_delay = 2016 (max=2000). I tried on both elcair wallet and bitcoin ...
0
votes
0answers
17 views

How to use bitcoin-core wallet from terminal? [on hold]

I've just installed bincoin-core (bitcoind + bitcoin-cli) on ubuntu 16.04, synchronized blockchain with testnet. But I coundn't find how to manage with my wallet from terminal
1
vote
1answer
23 views

What are the consequences if I spoof an IP address in the node_announcment message?

According to BOLT 07 the node accountment message looks like this: type: 257 (node_announcement) data: [64:signature] [2:flen] [flen:features] [4:timestamp] [33:node_id] [3:...
0
votes
0answers
3 views

how can i create a sign usdt transaction with javascript?

first l konw run en omni core then used the omnicore cli can work but i don't want to run a node in my local compute ,so ======================================== create a sign usdt transaction ...
0
votes
1answer
17 views

How do I run the bitcoin bx tool in my terminal

I am reading the book Mastering Bitcoin. At some point, I came accross the bx command and tried to run it in the same way as bitcoin-cli (I've got a bitcoin core node running). But I just get the ...
0
votes
0answers
12 views

Already finished 89 confirmation still not received in my Electrum 2fa wallet

I sent Bitcoin from localbitcoin wallet to my electrum wallet. Now it's 89 confirmation done. But still now it's not arrived in my wallet. Please help. Thank You Electrum wallet address :- ...
0
votes
0answers
13 views

exchange with no fee, alternative to coinbase pro (former gdax) [on hold]

According to coinbase, they will start implementing fees on pro.coinbase (formerly known as GDAX) next week. On Friday, March 22 @ 6:00 pm PDT, Coinbase Pro will implement a set of changes to ...
0
votes
2answers
13 views

Calculating height of block

How do I calculate a possible height at which a block should be mined some time between 2 given times (say 8:00 am - 10:00 am)?
0
votes
0answers
17 views

Question on Blockchain-Based Data protection framework research paper

I am reading the paper Distributed Blockchain-Based Data Protection Framework for Modern Power Systems against Cyber Attacks. I am unclear if the data transmitted by the smart meters to the blockchain ...
2
votes
1answer
19 views

Routing for Lightning network: was Flare implemented?

There is a 2016 paper from Bitfury on a proposed routing algorithm for LN: Flare: An Approach to Routing in Lightning Network What is the relation between it and was was actually implemented (the ...
0
votes
1answer
17 views
0
votes
1answer
30 views

Witness program hash mismatch while signing bech32 transaction

I'm trying to sign a transaction using signrawtransactionwithkey on bitcoin-core 0.17 but I'm getting the following error: {"ERROR":"[{"txid":"...
0
votes
1answer
13 views

sendtoaddress command doesn't work with bech32 bitcoin core 0.17

I have bitcoin-core 0.17 working on regtest mode and when I try to send to a bech32 testnet address I get invalid address I have set addresstype=bech32 on my bitcoin.conf
0
votes
1answer
31 views

Why explorers show difference balance for genesis block?

When I check balance for the address 1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa - different sources show different results. 66.92700504 BTC https://bitref.com/1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa https://www....
-1
votes
1answer
27 views

How to encode a string into a bitcoin address? (Not a brain-wallet, an address, like a vanity-address)

I would like to know if a bitcoin burn address can be tied to a string. This question is not about OP_RETURN or other ways of embedding into a blockchain. Here's the processes that I went through: ...
3
votes
1answer
72 views

How would the gossip protocol announce channels from a channel factory?

I was just listening to SLP59 with Christian Decker. They mainly discussed channel factories. While the construction of multiparty channels and higher order systems (sub channels) being derived from ...
0
votes
0answers
12 views

blockchain transaction stuck on pending for 8 days [duplicate]

i sent btc to someone 8 days ago it says pending 0/3 confirmations but it says confirmed on my transaction page does this mean the payment is not complete? and how long does it take to complete?
0
votes
1answer
21 views

51% attack + ignore blocks not mined by yourself [duplicate]

If you own 51% of the mining power and decide to ignore all blocks not mined by yourself. You would eventually end up having the longest chain, and would eat up the 49% of block-reward you werent ...
0
votes
0answers
34 views

I Created Bitcoin wallet and i have invested 2000$ for a start up in CTI [on hold]

I have invested 2000$ in CTI. so i just wanted to know whether this CTI company is fraud bcoz they have stop sending me my weekly credit in my bitcoin wallet.
0
votes
0answers
16 views

I sent bitcoin to this wallet - my broker. The Bitcoin machine I used takes 24 hrs to process. Please check if it was deposited [on hold]

Sent $570 Canadian dollars. Wallet : 14X18PonA5wXQoMVskHAhVUrmXu5p3es1h Transaction ID: d7357f3583 Thank you
0
votes
2answers
23 views

Recovering a wallet from a lost device onto newly bought device

Please, in case my device get lost, broken, or abundoned, what can I do to recover my lost wallet address with my bitcoins onto my new device?
0
votes
0answers
10 views

How can I connect to my own bitcoind node via json-rpc calls from python3 (or Django)? I'm using Windows 10

Context: I'm using bitcoind on Windows 10 and am able to operate it from bitcoin-cli already. Just want to do it programmatically from python3. Bitcoin wiki says python-jsonrpc is for old versions ...
0
votes
0answers
17 views

python-bitcoinrpc: modulenotfounderror no module named 'bitcoinrpc'

I'm running bitcoind/ bitcoind -regtest on Windows 10 and am already able to use bitcoin-cli -regtest along with json-rpc methods to perform basic operations and get balances etc. When I try to do ...
0
votes
0answers
21 views

Помощь по приватным ключам bitcoin/Private key help [on hold]

Есть в наличии 300-500 приват. ключей, как из них получить адреса и проверить на баланс? Посоветовали скрипт для Python2.7 #!/usr/bin/python from pybitcoin import BitcoinPrivateKey import requests ...
0
votes
0answers
21 views

reusing an address how can I get the confirmations

I would like to reuse an address I was thinking of using blockchain.info api which returns the amount sent to the address if confirmation reach the set parameter. When I send more BTC to the same ...
0
votes
0answers
23 views

Is it possible to get a block by timestamp?

I use Bitcoin Core API and I can retrieve a block by header hash as parameter using the getblock method. I need to get a block by given timestamp (median time). I found some solution. ...
3
votes
1answer
42 views

How do you start the Ardor funding account monitor via the command line?

I want to fund accounts I tag via account properties using the account monitor, but I want to understand how it can be started. The ardor account monitor can be started via the gui: https://...

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