All Questions

1
vote
2answers
29 views

Are nodes that don't accept inbound connections necessarily leechers?

Gavin Andresen and James Lopp seem to think that nodes that don't accept inbound connections could be called "leechers" in the same way a torrent leecher takes but doesn't give (or at least they did 5 ...
0
votes
0answers
28 views

Has anyone already created this type of ratio, graph or data for Bitcoin?

I am looking to see if anyone has already created this type of ration, graph or data for Bitcoin. The ratio would be: total amount of mined bitoins in circulation (at any given time): the average USD ...
2
votes
1answer
93 views

Does Lightning Network has concept of continuous stream of value?

Examples: Car insurance: $1000 per year. Legal consultation: $500 per hour. Visiting a website: $100 per hour. Assuming 1 BTC = $8000 1 hour = $100 = 0.0125 BTC = 1,250,000 sat 1 second = 1,250,...
2
votes
2answers
28 views

Are BIP39 mnemonics generated with a French list compatible with software that expects English words?

BIP39 specifies different word lists in different languages. But I wonder if the word list generated by a software that gives me French words (e.g. Copay on iOS) can be used to re-create the same ...
0
votes
1answer
29 views

Why tx informations of a specific transfer in BITCOIN protocol will send to many IP addresses?

Recently I send a specific value from a wallet to another wallet and Simultaneously I caputred the related traffics in source and destination. after that, I found that value and it's related address ...
0
votes
0answers
13 views

Sign a transaction with multiple inputs on coinb.in

I'm having trouble signing a transaction with two inputs on https://coinb.in. If I select the Sig Hash Type "All (default)" on the Sign tab and sign the transaction with the private key for one of the ...
0
votes
0answers
23 views

How to delete .dat files? 'rm' command fails with “bad message”

rm: cannot remove '/home/[user]/btc/bitcoin-core/blocks/blk01253.dat': Bad message The same error message when I tried running bitcoind -reindex Info: OS: Ubuntu Bitcoind version: 0.18 External ...
0
votes
0answers
16 views

I need help please [duplicate]

I sent my bitcoin to a bitcoin cash wallet. But it’s the same address as my bitcoin, the wallet is just a watch wallet and my money is just sitting there how do I get it Help me please
0
votes
1answer
15 views

How to get block headers from block hash using P2P API?

I have been experimenting with getheaders and one thing I can't seem to figure out is how to get a header for a specific hash, because getheaders doesn't provide this feature. According to the ...
2
votes
1answer
62 views

Accepting micropayment donations via Lightning Network - what is the most efficient / recommended architecture?

The difficulty that I am experiencing at the moment - how to accept Lightning Network micropayments donations supporting (shameless plug): https://genesis.re/wiki#Plan_B Zap / Joule: I send on-chain ...
1
vote
0answers
15 views

Is it cryptographically possible to have aggregate signature schemes that can improve privacy in UTXO consolidation?

My understanding of Schnorr signatures, Taproot and Graftroot and how they improve privacy in smart contracts / multi-sig is by allowing users to aggregate signatures so the individual signatures and ...
0
votes
1answer
28 views

How to re-secure a multisignature wallet if private key is stolen

Here are two attack scenarios on bitcoin private keys: 1) Assume that, BitCorp has just noticed that a Mallory has just compromised one of their servers holding their Bitcoin Private keys. Luckily,...
0
votes
1answer
66 views

BOLT #3: Shouldn't timeout be included in the script of “Offered HTLC Outputs” for the local node?

According to the BOLT #3 documentation, the offered HTLC output has the following script that allows the remote node to claim the funds with the payment pre-image and the local node to claim it after ...
6
votes
1answer
37 views

Why does getheaders P2P API return more than getblocks?

I've been reading through the Bitcoin P2P protocol documentation as well as experimenting with Bitcore library but confused about one thing. So getblocks seems to return inventory objects, which are ...
0
votes
1answer
36 views

Where can i download blockchain transaction ID

Tell me where I can download the Blockchain Transaction ID until 2013? That is, I want to take only part of the information about the blockchain from 2009 to 2013?
3
votes
1answer
142 views

What are the 3 arguments called in function SHA256?

void sha256(struct sha256 *sha, const void *p, size_t size) { struct sha256_ctx ctx; sha256_init(&ctx); sha256_update(&ctx, p, size); sha256_done(&ctx, sha); } I'm trying ...
-1
votes
0answers
32 views

How can I mine coins in bitcoin sv test node?

I have created a test node using Bitcoin SV but not be able to get coin from any faucet. Is there any way to mine coin in node?
2
votes
1answer
31 views

Bitcoin Core What default values should I pass for some positional RPC params in sendtoaddress

I am trying to use the sendtoaddress rpc method of bitcoin core. From the documentation I read that I can pass "estimate_mode" parameter to estimate a fee. However as I believe json rpc follows ...
3
votes
1answer
53 views

What is the rationale for inclusion of previous amount in SegWit signing process?

When spending a P2PKH output, the "data" we hash only includes the output script from previous transaction but when spending a P2WPKH (the new serialization) we also include the amount field from ...
0
votes
2answers
52 views

Why did repeated “R” values occur in Bitcoin transactions before?

Please explain why earlier the repeated values of "R" occurred in Bitcoin transactions. For example, this transaction has a repetition of the value "R": https://www.blockchain.com/btc/tx/...
0
votes
2answers
48 views

Bitcoin core How do I get the transaction fee while using sendtoaddress

I have a bitcoin core running on testnet, so for suppose I have a wallet balance of 1BTC and I have to send it to an addressx, so how can I know the amount of transaction fee so that I can subtract it ...
1
vote
1answer
41 views

How to handle multiple transactions from the same account(address)?

I am new to bitcoin so please bear my question. To understand the IN's and OUT's of this crypto world, i am creating a dummy bank to have a better understanding of the system. So I have a bitcoin ...
0
votes
1answer
27 views

Am I Being Prodded By A Bitcoin Mining Scammer?

I had someone approach me via an insta post, because i found his account and liked a photo. He said he was a bitcoin miner and forex trader in LA california, and asked if i was interested in earning ...
0
votes
2answers
28 views

Bitcoin transactions validation process

I have a general understanding of building blocks. But am hoping someone can fill in the details/gaps. Also, can you correct if something is not right? Thanks. Scenario: Bitcoin transactions are ...
0
votes
1answer
38 views

My Bitcoin transaction is lost

When I enter the deposit address of where I sent my bitcoin, the Blockchain says that the transaction is "Spent" What does this mean? It's been like this for 3-days now. Please help!
0
votes
0answers
41 views

How to sync my backed up wallet?

I backed up my wallet from computer A. restored the backup on computer B. then I spent some amount of bitcoin from computer A. Now my restored wallet on computer B shows the old balance which is ...
1
vote
3answers
86 views

What is a bitcoin incoming transaction with value = 0.00000546?

I wrote a script that downloads and parses blocks. I see a lot of incoming payments with value = 0.00000546. Any explanation? Thanks!
0
votes
1answer
17 views

LND How to reset pending_open_channels?

I am using LND (most recent version 0.6.1-beta) and I have a lot of pending channels in state pending_open_channels which are stuck for many days (perhaps because of low fee and full mempool) so I ...
3
votes
1answer
276 views

How relative can be “Blockchain” and “Social Network Applications”?

We hear too much of using Blockchain for "Social Network Applications" (such as Facebook or tweeter) ! I really do NOT understand how blockchain can be useful for Facebook or tweeter ?! Where, data ...
0
votes
0answers
20 views

Which is the correct value for Tx version in tx messages of bitcoin pcap?

recently i researched about TX messages in bitcoin protocol and capture a bitcoin traffic which, the version field of a TX message in a specific packet was equal to 2, while in this article : https://...
0
votes
0answers
30 views

Where is the code of chain reorganization in Bitcoin Core

I'm trying to understand how Bitcoin Core works in-depth. Can someone tell me where is the code executed during a blockchain reorganization in Bitcoin Core? Any explanation would also be greatly ...
-1
votes
0answers
12 views

Getting RPC output externally from a qt/GUI wallet

I have a qt wallet built and operating for an altcoin in Ubuntu but no corresponding daemon or cli/client built (I tried and failed recently to build the latter). I'm wondering if there is a way to ...
0
votes
0answers
51 views

Can a bitcoin user be deceived by being redirected to a false network?

Is this szenario possible? For example, evil guy(s) ith pretty big calculation power, calculates false network, what can imitate the nessesary behavior to a single user, but there no real transactions ...
0
votes
2answers
35 views

which is the relationship between ouput adresses and their value in a specific transaction?

Some days ago, I write a program to extract output addresses and its value in tx messages of a sample bitcoin pcap. extracted addresses are all valid and we can find them in block explorers. after ...
0
votes
0answers
16 views

RPC for LND: rpc_pb2_grpc vs lnd_grpc

I'm trying to automate launching multiple LND instances with a Python script. I've been trying to use lnd_grpc but can't get it to work. I created an issue in the LND repository and was pointed ...
0
votes
1answer
32 views

How to create the data parameter for a PSBT?

I am sure this is a dumb question but if using: bitcoin-cli walletcreatefundedpsbt "[{\"txid\":\"myid\",\"vout\":0}]" "[{\"data\":\"00010203\"}]" How do you create the data parameter? Where does it ...
0
votes
0answers
34 views

Send to bech32 segwit address from Bitcoin Core 17.1

I have a non-HD wallet in Bitcoin Core v17.1. I have never used SegWit before. I need to send some coins to a bech32 address from bitcoin-qt GUI. The problem is after selecting the specific coin ...
0
votes
1answer
33 views

Bitcoin Core mempool after disconnecting a block

After reading this answer by Pieter about "undo files" I'm wondering what happens with transactions that were included in orphaned blocks but are left out the new blocks when "rolling back". Are they ...
0
votes
0answers
44 views

How to host a website on Bitcoin or Bitcoin SV blockchain?

I saw somewhere that there is a way to host a website in bitcoin SV transaction. How can i make it? I want to do it without 3d party service. Is there any guide how to put html page in bitcoin SV ...
0
votes
1answer
26 views

Does Decentralized Cryptocurrency Exchange work for Bitcoin?

I know ETH works because it has a smart contract feature, what about Bitcoin?
0
votes
1answer
29 views

Most popular Bitcoin API gateway

I'm looking for well developed, maintained and stable API allowing to access bitcoin tesnet. Something like Infura for Ethereum. Googling gives many results, but can somebody point me out what is ...
0
votes
1answer
25 views

The nlocktime parameter in createrawtransaction seems not work using Bitcoin Core Wallet GUI

If I add the CLocktime (e.g 20) at the end it always gives: Error: Error parsing JSON:{"12CxqQHzhFxCm2TkGkKHdFFPyUerFXcSte":0.008,"1DBDDvpcHv66LD7sWz1mCitPALW1qfrga7":0.012}, If I delete the ...
-3
votes
0answers
39 views

Bitcoin ABC unable to start server

I have a bitcoin full node running in my local system, now I also want to run a bitcoin cash full node on the same machine. So I downloaded pre-compiled source files from the following link : https:/...
-1
votes
0answers
53 views

I guessed a correct Bitcoin seed phrase but

I was bored today so I wanted to try my luck and see if I can guess a correct seed phrase on electrum after many tries I got a message like this "seed type: 2fa" I clicked on next and then a message ...
0
votes
0answers
27 views

Estimating difficulty of “Memory-Hard Proof-of-Work” based on “size of memory”?

In Bitcoin proof-of-work, the difficulty of Proof-of-Work is estimated and calculated based on total hashing power of the participants. If total hashing power of the participants is higher, then PoW ...
0
votes
0answers
16 views

How to run BItcoin Cash and Bitcoin full node simultaneously

I have a bitcoin full node running on my local system. Now I want to run the bitcoin cash full node in parallel, so I downloaded complied source code of the Bitcoin ABC from the following link : https:...
1
vote
1answer
40 views

Remote node signature for HTLC-success and HTLC-timeout transactions

According to BOLT #3, when constructing a HTLC output in the version of the local node (both received and offered HTLC), it requires that the payment to the local node is locked with CHECKMULTISIG ...
0
votes
0answers
10 views

Litecoin : Error ECONNRESET while trying to connect with NodeJS

I am getting started with Litecoin so please bear with my question. So I have a local litecoin node running in my local system. So I am planning to use NodeJS to communicate with the Litecoin server. ...
1
vote
1answer
42 views

How to combine separately signed inputs from different users?

With two separate signed raw transactions from two users, how would one go about 'batching' these manually (combining the inputs and outputs into a single transaction)? Is this a viable solution for ...

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