All Questions

According to this answer about why addresses are hashes rather than public keys there are potential attacks that are possible if you have the public key rather than the address, what are these attacks?...

I invested with this miner she asked for R6000 to confirm my transaction then again asked for other money in order for me to receive my money. Yes I do see the money on my wallet but it state non-...

Will bitcoin be able to self sustain itself especially the mining process if there is not enough of an incentive to invite the miners needed to mine bitcoin to keep transactions moving faster? Is the ...

I have some doubts about P2SH-P2WPKH BIP16. I can read the witness program and I understand that a node is triggered when find 0 and 20 o 32 bytes in scriptSig or ScriptpubKey, more precisely: If is ...

I have an old Bitcoin brainwallet that I created a few years ago (before any forks) with almost 1 BTC in it. I know it's not a lot, but I decided to get a Trezor as a safer storage method. I now ...

I'm on Windows 10 with GUIminer, i want to mine on the slush's pool but every time i enter every host adress i saw it didn't work on slush pool. I entered the right login for my miner and on ...

I'm passing an unfunded proposed tx and feeRate param to fundrawtransaction which gives me back the hex of the tx with inputs selected and its fee. I'm not passing a conf_target or estimate_mode. I ...

[2020-04-03 20:10:11] Started cgminer 3.7.2 [2020-04-03 20:10:11] Loaded configuration file cgminer.conf [2020-04-03 20:10:11] clDevicesNum returned error, no GPUs usable [2020-04-03 20:10:11] No ...

I am developing my own wallet in python for which I have already implemented BIP32 and BIP39. According to BIP32 documentation, change should be stored in different addresses as well as payments ...

Apologies for my limited understanding, still learning. According to https://en.bitcoin.it/wiki/Genesis_block: The first 50 BTC block reward went to address 1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa,[1]...

I'm using a MultiBit wallet (version 0.5.1) and a transfer from Coinbase to the wallet has been showing up as unconfirmed since March 18th (16 days). Checking the transaction on the ledger, however, ...

I was working with a broker, now my "bitcoins" are in "blockchain", and I have no trace. How do I find them? How do I find said blockchain and bitcoins ?

I payed to this site but in my computer account I can't see the transfer please help me .

While looking up how a block get mined I stumbled over the version number in the header - which is used to "keep track of changes to the protocol". But even in the last 5 blocks of the chain (at the ...

As I could read on BIP 32, we can generate HD Wallets using all the rules defined by Pieter Wuille, but I came across a sentence that was written in the document and I could not fully understand. ...

I am wondering how the daemon gets the transaction data from just a hash. I'm NOT asking how i can get it, i know i can get it via the rpc, i am asking how the daemon does it behind the scenes. Does ...

According to this answer: https://bitcoin.stackexchange.com/a/63996/100526 When he wants to generate a public key from the private key, he has used K=k*G. but I can't understand it's result. If we ...

I am trying to debug an issue where i believe i might have a bad signature but i am trying to figure out how to approach it. What is this a signature of. Private key + what (redeem script? entire raw ...

I want data on as many stale blocks as possible. Is there a way to ask peer nodes to run "getchaintips" and get their results? Previously, I used Blockchain.info's API call for this, but it seems ...

I have my wallet in blockchaininfo and I did the backup of my 12 words (SEED). I would like to open this wallet in Electrum, I notice that Electrum allow to recover a wallet using a SEED from ...

I know that you can generate a new key pair with a command like. openssl ecparam -genkey -name secp256k1 And the resulting output will contain a new private key with the encoded public key. Is it ...

Im very confused about how you get your private key and how u can transfer it

I currently have a full bitcoin node on my local network and I would like to create another node but only update it by local network. I have tried with: ./bitcoind -connect<iplocal> ./...

What is the procedure to sign a raw transaction with multiple inputs, i have some doubts, this is what i am doing: Step 1 First I serialize 1 unsigned tx for each input. INPUT 1 02000000 // Version ...

Let's say I have a transaction with txid=A which has bip125-replaceable=True. If I bump the fee the original transaction will be removed from the mempool and replaced by the new one, so how do I know ...

I am trying to set up a Cold and a Hot Wallet. Hot Wallet = "Exodus" on my everyday mobile phone. Adressformat is Bech32 with Prefix "bc1" or legacy-prefix from format "P2PKH" then adresses start ...

Why when I run in the node bitcoin-cli getpeerinfo the list is an empty array? Do I need to let time to connect other peers?

I am learning the Bitcoin-cli, and when I run a command like getbalances, I get a JSON with "mine" and "watchonly". Is there a way i can only return the watchonly portion? My broader question is can I ...

Sorry, if the question may seem trivial but it is bothering me for a while now. I understood how the proof of concept works when one tries to change an old block. But how that will work for the case ...

Is there a way to convert back or what do I do? I would have thought that the old dat files would still be somewhere on my PC. I never put them in a wallet ( .1 BC) so it was just a bunch of files. ...

I am using Exodus wallet and an eCommerce plugin to accept cryptocurrency payments. To generate the HD wallet addresses I needed to provide an xpub key. I accidentally used the BTC xpub key instead of ...

I using regtest to test bitcoin core rpc in golang. package main import ( "fmt" "github.com/toorop/go-bitcoind" ) const ( SERVER_HOST = "127.0.0.1" SERVER_PORT = 18444 ...

USB device have SRAM and DMA sub-modules: what is the role of SRAM in USB device?? a. How DMA controller knows to initiate a request to memory(either read or write)?? b. How Endpoint get data from ...

I am a beginner in Bitcoin topic. What are the advantages / disadvantages of using crypto wallet: where I have to put personal information where I do not have to put personal information And how do ...

I have decided to buy some bitcoins using the Bitcoin.com wallet app and I have just received the invoice for my transaction of 1000 EUR to BTC. The rate of the BTC for the last days is always around ...

I imported a bitcoin address to my block-chain wallet. The bitcoin shows as un-spendable in the wallet. The address was used previously by me and worked fine. How do i fix the problem to make the ...

I want to withdraw/sell bitcoins that I have on my BitPay wallet. I need to transfer the results USD to account in Puerto Rico. I reside in Argentina. I have already tried with Skirll, but does not ...

I have been wondering if there is an api available that can enable me know if a certain amount of Bitcoin has been received from a particular wallet address. For the moment I have only be ...

I want to generate P2SH-P2WSH with script P2PKH. My public key is 027712968e8f2f9dfa79abe10940a3d915a0c95a0b97750881e6201acf2b66da97 SHA256 and RIPEMD160 of Public key ---------- Witness Script ...

Hi i want to make transactions of bitcoin bech32 addresses using bitcoinjs-lib , here is my code below, it works fine when my address has only one utxos but when it increases to two or more as its ...

Trying to send BTC, but fail. The transaction is not in mempool. What to do with these and how to solve the problem? I already returned BTC canceled the transaction

I am importing a "warm" multi-sig quorum into bitcoind using importmulti like so: {"jsonrpc":"1.0","id":"curltest","method":"importmulti","params":[[{ "desc": "sh(multi(2,[eb2d2f9e/44'/1'/0']...

I'm Unable to make a transaction with litecore lib using bech32 address, although same code for bitcore-lib is working and txn is signing. const litecore = require('litecore-lib'); let utxo = [{ ...

I had installed bitcoin-wallet app on an old phone a couple of years ago, just out of curiosity about bitcoin. I obtained somehow a teeny amount of bitcoin, .0017xxxx anyway, I installed the app on a ...

I am planning to convert a part of my fiat currencies into BTC. I see that web wallet are a good balance between ease of use and security as it prevents breaking a device, being robbed physically, etc....

I am having trouble to sign a transaction on Blockcypher Test Network (using python): import requests from blockcypher ( import send_faucet_coins, create_unsigned_tx, make_tx_signatures, ...

I have a little bit confusion about addresses segwit and not segwit. I can see P2WPKH and P2WSH from this link https://en.bitcoin.it/wiki/BIP_0173, and they are segwit and start with bc (mainnet) or ...

I am currently learning how to create raw transactions. I can already create standard using bitcoin core (0.19.1), but when I wanted to create with custom opcode like this: asm: OP_HASH160 ...

I use software from https://github.com/ca333/rng-scanner , I try to find r that is reused. from the software I found results Bitcoin Address : 1GQdrgqAbkeEPUef1UpiTc4X1mUHMcyuGW In Input NR : 141 ~ ...

For P2PKH, the scripPubKey is OP_DUP OP_HASH160 <pubKeyHash> OP_EQUALVERIFY OP_CHECKSIG. Why can't it check the signature only? Why can't it be shortened to just one opcode — OP_CHECKSIG? Why ...