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5 views

how to create second node regtest bcoin

I have created a regtest node bcoin, I would like to know how to create the second regtest node to send transactions between nodes and you could also tell me how to generate addresses for the second ...
0
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0answers
6 views

How to listen to deposits and confirmations of bitcoin transactions

hello I am building a web application using nodejs, bcoin and my application provides the user with a bitcoin address in which to deposit funds, I would like to know how I can listen on my nodejs ...
0
votes
1answer
18 views

How to get extended key from 512-bit seed?

I've followed the bip32 and bip39 specifications for generating the 512-bit seed, however I didn't understand how to generate the xpriv from this. I've used the left 256 bits for the private key and ...
0
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0answers
31 views

A rogue wallet was created on my Full Node. How did this happen? Can external users create a wallet on a Full Node?

I have a synchronous (1G/1G) network connection and I was willing to put up a full node that allows inbound synchs, but not without figuring out how someone opened a rogue wallet on my system. This ...
0
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1answer
18 views

RPC interface MITM protection

When I connect to my bitcoind instance over RPC, I need a password for that, but no certificate. So how are man-in-the-middle attacks prevented on that connection?
0
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1answer
16 views

What are the risks of using a non-randomized context with signing contexts?

I am designing an API which will utilize libsecp256k1. I am trying to hide most of the low-level stuff, and context is one of the things I want to handle for a consumer of my API. It would be ...
0
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1answer
18 views

Witness Version bech32 and P2TR

I don't fully understand the meaning of the witness version byte. I am not sure if I confuse the address format prefix bc1 with the witness version. My understanding: The extra byte reserved for the ...
0
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0answers
10 views

Did I use the wrong wallet address? [migrated]

I recently started mining with some left-over GPU time. My server is running Ubuntu. nvidia-docker run --memory="7g" -d kriation/ethminer -P stratum1+ssl://...
0
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1answer
14 views

How can AMP invoices be static in Lightning?

I have heard that there are static AMP invoices that can be reused multiple times (at least in LND). But previously I understood that you should never reuse the same paymenthash, because you could ...
1
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0answers
35 views

Need help setting up Bitcoin Core full node over Tor (solely) and Tor hidden service. Tried a bunch

Fetching getnetworkinfo should result in IPv4 and IPv6 flags set to false and Tor to true. This will ensure that I am operating my node privately. But this is not the case for me. This is what I ...
1
vote
1answer
19 views

Invalid transaction. Error: TX decode failed. Make sure the tx has at least one input

I'm using bitcoinlib for python to create a transaction and send it but I'm getting the following error: Funds not sent, exception error: Error connecting to blockchair on url https://api.blockchair....
0
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1answer
16 views

How long does it take for Multibit to synchronize an old wallet?

I'm trying to restore my old wallet which I had created on Multibit around 2016 and held a fraction of a bitcoin, as far as I can remember. I have not touched the wallet for years until today when I ...
1
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0answers
11 views

Is the coinbase automatically generated by the getblocktemplete rpc call?

I'm working on a mining script and i just want to really be certain for sure as I wouldn't want to waste Time & resources. Q1 - Is the coinbase transaction automatically generated by the ...
0
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0answers
21 views

I made a terrible mistake, please help me [closed]

I made a terrible mistake, I was doing some crypto transfers and I wanted to exchange ZMAX for XRP by mistake I copied the XRP contract instead of the correct destination address, I sent all my funds ...
0
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0answers
21 views

BitCoin SHA256 - ShortCut

just a general question, would it be ethical to start mining bitcoin using a shortcut, in the SHA256 hash (if that may even be possible), and mining at a much much faster speed using very less ...
0
votes
1answer
27 views

Why do several exchanges not comply with KYC regulations

I am doing a research project about Crypto regulation. From what I read, Know Your Customer and Anti-Money Laundering compliance from exchanges are legally required in the US. However, a quick search ...
0
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1answer
30 views

If NFTs are unique instances of data on a blockchain, what keeps a different chain from having the same piece of data?

I apologize, I tried to make the title as concise as I could. If a Blockchain, say the Bitcoin chain, has some NFT that exists uniquely (by definition of an NFT) on that blockchain, what prevents the ...
3
votes
1answer
11 views

Difference between capacity and max_htlc in Lightning Network?

What is the difference between capacity and max_htlc in the routing of payments in the network?
0
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0answers
19 views

How to create a Transaction with or without scriptPubKey?

I'm using the bitcore-lib-cash to attempt to create an instance of Transaction (_fromNonP2SH). Transaction.prototype._fromNonP2SH = function(utxo) { var clazz; utxo = new UnspentOutput(utxo); if ...
-4
votes
0answers
29 views

How would I contact Michael Saylor via e-mail? [closed]

I have a short message I wish to forward to this person. I don't have any "social media" accounts (nor can I get them). I'm not expecting a reply. I just want to comment on something ...
0
votes
2answers
25 views

Why is the previous output index 4 bytes?

Using this post to define the format of a transaction: Create Output with a bunch of input Why is the previous utxo index (also called the previous output index) 4 bytes? The maximum output index ...
-1
votes
1answer
58 views

old paper wallet shows missing balance after import; hacked? Bug? Confused?

I have an old (2014) paper wallet I've deposited coins into over the years. I have another paper wallet that was generated around the same time, but wasn't used until last year. I just finished ...
0
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0answers
22 views

I need to retrieve a missing transaction, who can help please? [closed]

In February I sent 2003usdt from Binance to Bitforex, but the transaction never reached Bitforex. I've contacted both platforms with zero help in retrieving the funds. Can anyone help me please?
0
votes
1answer
15 views

Watch incoming transaction with node.js

I would like to watch a set of Bitcoin addresses and be able to execute some logic as they receive a payment. According to this answer it can be done using blockchain.info: const Socket = require('...
0
votes
1answer
23 views

Replicate bitcoin core for backup

I want to know if possible to have the same bitcoin core and his same wallet running at the same time in two different machines, can I use the same RPC user/pass, I have o machine running but I want ...
1
vote
0answers
29 views

blockchain.com api | How generate "Legacy" & "Nested SegWit" & "Native SegWit" addresses for receive separately?

Please check out this link : https://www.blockchain.com/api/api_receive As you see we can generate receiving addresses for our customers using this api. My question is what is the type of that ...
0
votes
3answers
58 views

why does the number of transactions per block reduces with increase in transaction fees?

While looking in mempool i saw with increase in sat/vbyte the number of transactions decrease. are they somehow related?
1
vote
0answers
66 views

How much mining activity is needed for Bitcoin to remain secure?

I'm not looking for a number, but rather for a way to make an estimate taking things like market capitalization and the fact that mining uses ASICs into account. (I assume ASICs are relevant since ...
1
vote
1answer
21 views

What if there where no nodes to share a new block

I am fairly new to blockchain technology, so bear with me if i make mistakes So lets say there are 10 people trading a cryptocurrency 5 of them are online from 8 to 10 am and the other half on online ...
-1
votes
0answers
30 views

Submit and old bitcoin block

Im using bitcoincore to submit the block 536592. Is possible submit an old bitcoin block like 536592 using bitcoincore? Thanks
-2
votes
0answers
23 views

Need help about first bitcoin faucet [duplicate]

I use the first bitcoin faucet created by Gavin and I Don t find my keys that I write in a paper and my pc don t work anymore.. If someone can help.. I have more than 15btc.. I'm desesperated to ...
1
vote
1answer
45 views

How do exchanges like binance or kucoin store user assets?

My questions about storing user assets: An exchange creates unique deposit addresses for each users. Are these addresses all derived from a HD wallet and exchange controls all the keys and indexes? ...
0
votes
0answers
24 views

Does Taproot expand the potential for smart contracts? If so, how? [duplicate]

I have heard that Taproot will expand BTC's potential for smart contracts. Is this true? If it is, how so?
3
votes
1answer
43 views

Is there a reason why 1 bitcoin = 100000000 sats?

Is there a technical reason why Satoshi implemented Bitcoin with just 8 decimal places? The max number of 64-bit signed integers is usually 9,223,372,036,854,775,807 ; so with the 21 million cap an ...
0
votes
0answers
14 views

MULTİBİT HD WALLED TO ELECTRUM [duplicate]

I need help with my cold wallets. I have a multi-bit wallet and I know its 18-phrase seed key and password, but I know the password, but when installing the multi-bit program, 5 BTC appears in it, but ...
0
votes
0answers
9 views

Non-mandatory-script-verify-flag (unknown error)

I am trying to learn how scripts are working. In a testnet i got some scripts working and learned a lot about what not to do. But now I am struggeling getting this to work. Originaly I worked with a ...
0
votes
0answers
22 views

Do Bitcoin deposits happen in 3 phases?

I recently had someone convert my sumcoin and said they were going to send to my Bitcoin wallet. I noticed that about $150 (of the $57,000) came through. He said that deposits of that size occur in 3 ...
2
votes
1answer
36 views

What are the main technical differences between Bitcoin-core (BTC), Bitcoin Cash (BCH), and Bitcoin SV (BSV) [closed]

What are the main technical differences between Bitcoin-core (BTC), Bitcoin SV (BSV) and Bitcoin Cash (BCH)? At what block number did the fork take place? Do they integrate Segwit/Taproot? What ...
-1
votes
0answers
14 views

Earning reward submitting a block

I use bitcoincore to submit a block. Can I earn somekind of reward submitting blocks? Thanks
0
votes
0answers
16 views

Use Hash rate for usfull things [duplicate]

You hear often that Bitcoin is using so much power/energy. It is explained to me that all the nodes in the network compete to mine the next bitcoin block by resolving calculations. Would it be a idea ...
4
votes
2answers
212 views

How can I find samples for P2TR transactions on mainnet?

Can I ask for a P2TR transaction id example past block 709632? I was trying to debug one of my scripts and something is wrong when searching for witness_v1_keyhash, and couldn't manually find one in ...
3
votes
1answer
59 views

Bitcoin Core just deleted my 350+ GB of blockchain data?

I've kept the same config file and internal hard drive for my Bitcoin Core datadir for many years. I've updated to numerous new versions. The other day, I reinstalled Windows on the system drive again....
4
votes
1answer
102 views

Why is CAmount a signed integer?

Is there is reason why Bitcoin uses signed instead of unsigned integers for amounts? I can't imagine a scenario where negative amounts could come up. Was it simply something Satoshi implemented for ...
0
votes
1answer
31 views

How do I start mining bitcoins technically?

I've read a lot of comments/posts on the internet and most of which are talking about buying a professional mining-machine. However, I am just wondering, on the software side, how do I technically ...
0
votes
0answers
31 views

Who am i borrowing from when trading BTC derivatives like Inverse Perpetual contracts?

I'm trying to get my head around how the Inverse Perpetual contacts work. And failing. From a short position point of view i found information that says i have to borrow BTC. But where am i borrowing ...
0
votes
0answers
25 views

My Public Key on MultiBit Classic is 34 digits long

My public key, as it's displayed in MultiBit Classic, has remained unchanged in the last eight years since I bought my bitcoin in Jan 2014. I'm now looking to move my bitcoins from MultiBit Classic ...
0
votes
1answer
27 views

Merkle tree recalculation during transaction lookup

When full-node receives a request from SPV client to check if given transaction exists in the blockchain - does it always re-calculate the merkle tree on the fly in order to return merkle path + block ...
0
votes
0answers
15 views

Is there a lightweight bitcoin wallet that has API support?

I was wondering if there was a Bitcoin wallet like electrum with features like getting balances, and sending/receiving transactions, but not have to store the full blockchain (a lightweight wallet). I ...
0
votes
1answer
28 views

how i can get all adress from WIF private Key bitcoin

Java. bitcoinj i have private key String str="5HpHagT65TZzG1PH3CSu63k8DbpvD8s5ip4nEB3kEsreAnchuDf"; i try get compress and decompress. 2 adress. in this format : ...
0
votes
0answers
30 views

BIP32 extended private key determination

Goal: Calculate a BIP32 Extended Private Key from a Master Private Key and Chain Code using a specific Root Key. Documentation: BIP32 CKDpriv I am using a normal child, with i = 0. My HMAC-SHA512 ...

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