All Questions

I've just encrypted my wallet.dat file using the "Settings -> Encrypt Wallet" menu option. I then closed the client and re-opened it. I was expecting to be prompted to put in the wallet password ...

My Blockchain Wallet Has Been Hacked By Recovery Words.and my wallet id changed How Can I Get Access To My Wallet Recovery History?

if i am saying that node A is having some block (B) and other nodes X,Y,Z are wants to validate the block B than node A has to send the block B to nodes X,Y,Z. This block B contains the hash of ...

In mining process, miners validate the block based on proof of work or using some other consensus mechanism. Miners also validate the block. So in this validation process, miners validate only hash ...

I'm setting up a regtest node on my Windows machine using bitcoin-qt. Here's my config: regtest=1 txindex=1 server=1 [test] rpcport=8332 rpcuser=ulu rpcpassword=*** Next, I would like to run a ...

Following up from my previous question, I still have some questions left. Does it really work if I turn off the internet before doing getnewaddress? Will it really give me something real and can get ...

I have around 25 BTC from back when Bitcoin was around 10$ or lower. At the time, a friend sent them to me and I never thought they would ever be worth much. Since that time, I've moved them around ...

I have a openssl generated private key in the following form: $ cat priv.pem -----BEGIN EC PARAMETERS----- BgUrgQQACg== -----END EC PARAMETERS----- -----BEGIN EC PRIVATE KEY----- ...

Every block in a blockchain contains merkle root value. So for any block, there is some list of transactions and you create a merkle tree based on these transaction. For other blocks, same process ...

I am wondering how POW calculation is working ? Is it basicly a hash brute force ? So it is based on probability and luck for miners ? Thanks

I have read this proof of work calculation takes about 10 minutes. That mean people who are making the transaction should wait 10 minutes ? Let's imagine i want to buy a drink with bitcoin. The ...

My goal is to understand bitcoin. I have read what happens during a transaction and have a question about it: When a transaction happen, the miners compute a value called "prof of work". This value ...

My goal is to understand bitcoin. I do not want to earn money with mining. I have a server without GPU (intel i5 with 4 cores) Here is what i've done: I have downloaded, maked and installed bitcoin ...

I goal is to understand. I do not want to earn money with mining. (I have a server without GPU) Here is what i've done: I have downloaded, maked and installed bitcoin sourcecode from github. It ...

following the hackernoon for full node btc, https://hackernoon.com/a-complete-beginners-guide-to-installing-a-bitcoin-full-node-on-linux-2018-edition-cb8e384479ea i have some small questions, is there'...

I'm trying to understand Proof of Work and something doesn't seem to fit, First, it seems to me that the faster the network can confirm a transaction, better is. I'm coming from a computing ...

I built Bitcoin Core from source by following this guide: https://github.com/bitcoin/bitcoin/blob/master/doc/build-osx.md And got it running on the command line via: ./src/bitcoind Screenshots from ...

Let's say we have transaction X and transaction Y. The timestamp of X is chronologically earlier than that of Y. X's spender broadcasts X to the network and the same goes for Y's spender. Let's say ...

How do I transfer my Bitcoin into AUD and my bank account or who is a good broker or company to organise it please I have a substantial amount of Bitcoin to transfer to my bank it is in block hash ...

My goal is to understand the bitcoin internals. Here is what i have done: I have downloaded, maked and installed bitcoin sourcecode from github. I have launched the bitcoind daemon. Everything ...

Please I need serious help ,I sent a bitcoin to an address only to wake up to see a different address ,instead of being sent it shows transferred to a zero recipient ,please I need to rectify this

Can they do it? Or they "talk" to a full node for that purpose and are used only for mining purposes? Thanks in advance for your answers.

When I restart the Bitcoin node, I would like to load the wallet I created in the "wallets" subdirectory. bitcoin-cli createwallet "1" bitcoin-cli listwallets -> result : "", "1" bitcoin-cli -testnet ...

I am curious whether there are any organizations that are actively trying to monitor bitcoins from illegal sources. I understand that 'when done properly' you can make bitcoins practically ...

Let's say Alice wants to give Bob 1₿, and Bob doesn't have a regular blockchain wallet address yet. The classic example assumes that Bob is locking some Bitcoin of his own on the blockchain, and ...

Noobie here. In Ch. 2 of Antonopoulos' "Mastering Bitcoin", I try to scan figure 2-2 (per his instruction) using a recently installed Mycelium on my Android. Why do I keep getting "Unrecognized ...

I have a Bitstamp account and when I try to use the API for bitcoin deposit I discover that there is a unique address for my bitcoin deposit. It is safe in term of address reuse consideration ? Here ...

I invested $300. in Bitcoin on Feb 20, 2019. I would like to know how much my $300. has gained? I wish I could understand the calculations, but a simple answer would do. I am not good with math. Thank ...

I have a downloaded blockchain in zec wallet, how can I get all addresses from all transactions from it? How to read ~/.zcash/blocks/blk***.dat and ~/.zcash/blocks/rev***.dat files?

I will describe my question using an example. Let's say the network is working on adding block #100 to the blockchain. An attacker recreates block #99 with a combination of transactions that are "...

i m testing on doge coin ... i needed doge coin. the link ( https://doge-faucet-testnet.ggcorp.fr/ ) not working for my addresses :- noKnYysXng45hui8gtCt5mgxNcBrHpxETm ...

I want to create a transaction for USDT on Bitcoin blockchain that sends 99% of USDT balance to user A and 1% to service as a fee. I am checking what Omni layer is capable of and I kinda got how it ...

I have a bitcoin-core-18.0 with on my linux mint, and I don't have downloaded the bitcoin with the ppa but I downloaded the official zip directory on site bitcoin. Now my question is, c-lightning ...

I transferred bitcoin to a friend yesterday and it showed transferred this morning to an unknown address and it showing zero recipient a

I have been reading about transaction malleability a lot still doesn't make sense to me. Is there a script I can use to test it out ? If the transaction that is malleable is changed by the attack, how ...

I have a bitcoind running, and after new blocks being synced, sometimes I kill it(without stop command). Next time, when I start it, it goes through already synced blocks. Is there any way to force ...

I mine using username and password at the moment but as bitcoin core is changing over to rpccookiefile. My question is, if i use rpccookiefile how do i point my antminers to my local bitcoind 'pool' ...

Just for educational purpose but might come in handy sometime, what is the cheapest way to attack the bitcoin block chain? is it possible for a block with at least one confirmation to be orphaned ...

I'd like to derive a tx hash, but i can not find documentation about it given a transaction, lets say block 28973905 (which has one transaction) https://seed1.longevito.io/block?height=28973905 How do ...

I am reviewing Bitcoin Core source code. I am following the code which states take a double sha 256 of the public key to get the IV and use the master key for the encryption key for encrypted wallet....

What is the purpose of full nodes storing merkle roots? Why don't they save the transactions only? The hashes could be calculated only when a lightnode asks for them and the merkle roots could be ...

I need the whole details please. Like does that happen only in the current block? Or at past blocks do? And how exactly does this happen? Do full nodes send the proper hashes and then a local ...

There is something I cannot understand about Merkle trees. I understand how they are calculated and etc., but I cannot understand how they are used on a blockchain. If a block stores only the Merkle ...

i) scriptSig: <sig> scriptPubKey: <pubKey> OP_DUP OP_HASH256 <pubKeyHash> OP_EQUAL OP_VERIFY OP_CHECKSIG ii) scriptSig: <pubKey> scriptPubKey:...

I'v downloaded cryptocurrency trade terminal&bots "margin"(https://marginsoft.host) and faced the automatic trading bots set up problems. FAQ did not help. Margin works correctly, all features ...

I downloading bitcoin core on my computer. But my computer is full, and downloading is not complete. I made transfer my bitcoin to URI on bitcoin core, which downloading. But nothing came and I didn't ...

I wanted to know the differences between the public key and extended public key and their use cases.

After checking my bitcoin account after two years, 0.00010757 of a bitcoin remains even though I explicitly remember having half a bitcoin left. My first thought someone somehow stole it. But after ...

I will not post any of the codes here so please don't ask. So, my husband has a number of apps in a folder - Tronwallet Telegram Guildchat Coinbase Biance Google authenticator He kept going on ...

I have followed the steps to install a C-lightning node on my Ubuntu machine. I wanted to know if I could install configure and make a second node on the same machine where both could run in tandem?