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What are the potential attacks against ECDSA that would be possable if we used raw public keys as addresses?

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?...
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0answers
6 views

How to do transactions to imported wallet address back to my wallet [duplicate]

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-...
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0answers
11 views

About mining bitcoins [closed]

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 ...
1
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1answer
19 views

ScriptSig in P2SH-P2WPKH BIP16

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 ...
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0answers
14 views

Transfer from old brainwallet to Trezor

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 ...
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0answers
16 views

Problem connecting on Slush's pool with GUIMiner, i tried many Host adress to connect, every time it says the target computer expressly reject it

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 ...
1
vote
1answer
24 views

Calculating fee rate of tx returned by fundrawtransaction

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 ...
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0answers
11 views

cgminer cldevicesnum returned error no gpus usable

[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 ...
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1answer
15 views

How to spend the change in a BIP32 super account?

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 ...
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1answer
23 views

How were the first coins spendable?

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]...
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1answer
14 views

Pending transaction shows as confirmed on blockchain explorer

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, ...
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2answers
26 views

Trying to locate my bitcoins

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 ?
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0answers
15 views

can't see the transfer

I payed to this site but in my computer account I can't see the transfer please help me .
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0answers
24 views

What does the version number in the blockheader represent

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 ...
1
vote
1answer
28 views

What does “deal with collisions” mean in the context of BIP32 fingerprints?

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. ...
1
vote
1answer
19 views

How does the daemon get a transaction via a hash

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 ...
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1answer
25 views

produce a public key from private key with ecc

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 ...
1
vote
1answer
18 views

How to Verify P2SH Signature

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 ...
0
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1answer
20 views

How do I ask other nodes for their stale blocks?

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 ...
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1answer
19 views

Recovering Blockchaininfo wallet in Electrum wallet

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 ...
1
vote
0answers
18 views

How can you generate a bitcoin Public Key from an existing Private Key using openssl?

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 ...
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2answers
30 views

When you buy bitcoin do you get the private key mailed to you?

Im very confused about how you get your private key and how u can transfer it
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0answers
12 views

How to connect a bitcoin node to a complete node through the local network?

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> ./...
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0answers
20 views

How to sign Raw Transaction with Multiple Inputs

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 ...
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1answer
18 views

Monitoring BIP125 transactions in the mempool

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 ...
0
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1answer
15 views

BTC-Wallet from “Airgap.it” asks for Receipient-Adress-Prefix “1ABC”. What format is that?

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 ...
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0answers
13 views

Bitcoin peer info

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?
0
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0answers
15 views

Parsing JSON in bitcoin-cli

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 ...
1
vote
1answer
38 views

How proof of work works in Blockchain?

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 ...
0
votes
1answer
35 views

Saved bitcoin dat file, unfortunately converted to Adobe

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. ...
0
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1answer
20 views

I accidentally used BTC xpub key to generate HD wallet addresses for BCH, can I recover funds?

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 ...
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0answers
11 views

Bitcoin core Rpc EOF?

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 ...
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0answers
7 views

DMA and SRAM USB device or USB protocol

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 ...
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0answers
13 views

Which crypto wallet do you prefer? How do you use crypto wallets [closed]

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 ...
0
votes
1answer
23 views

Strange BTC rate behavior when buying bitcoins

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 ...
0
votes
1answer
15 views

Imported bitcoin address to block-chain un-spendable

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 ...
0
votes
1answer
12 views

I want withdraw from BitPay and send USD to bank account in Puerto Rico. I reside in Argentina. Is that possible?

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 ...
0
votes
1answer
23 views

How to determine if BTC has been received from a particular address

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 ...
0
votes
2answers
52 views

Generate P2SH-P2WSH

I want to generate P2SH-P2WSH with script P2PKH. My public key is 027712968e8f2f9dfa79abe10940a3d915a0c95a0b97750881e6201acf2b66da97 SHA256 and RIPEMD160 of Public key ---------- Witness Script ...
1
vote
1answer
42 views

Bitcoinjs-lib how to add multiple utxos in addInput

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 ...
0
votes
1answer
10 views

Transaction Status: 0 / not confirmed, not in mempool

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
0
votes
1answer
20 views

Will bitcoind import private keys for multi-sig descriptor with watch-only flag set to true?

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']...
0
votes
0answers
11 views

Litcore-lib is not able to make txn from bech32 address

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 = [{ ...
0
votes
1answer
34 views

30 months of history, and 50GB of data?

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 ...
0
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2answers
51 views

Can I lose my Bitcoin.com wallet if the company and the website database are destroyed?

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....
0
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0answers
15 views

Blockcypher make_tx_signatures “Bad Signature” error

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, ...
2
votes
1answer
69 views

Confusion about Addresses

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 ...
0
votes
2answers
39 views

Creating a custom transactions

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 ...
0
votes
1answer
31 views

How to find Reused R values

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 ~ ...
0
votes
1answer
20 views

Why can't P2PKH's scriptPubKey be shortened to only OP_CHECKSIG?

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 ...

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