Category : Bitcoin Stack Exchange

Bitcoin Stack Exchange

Could someone share with me some documentations or sites on how to set up a custom signet using bitcoin core?

Recently I am going to use bitcoin core to set up a custom signet on my docker. I have read some implementations on wiki, but I had some problems when starting up a custom signet. One of the problem is that the mining time I set is not the exactly m...

Can some one guide me to get multiplicative mod inverse of this equation?

F=115792089237316195423570985008687907852837564279074904382605163141518161494336 F1=115792089237316195423570985008687907853053774472357734211031373574713498083000 (F *x)%F1=1833008317223151691092147624158127895046986905106317517737727696800091386705...

Can some one guide me to get multiplicative mod inverse of this equation? [closed]

python - Can some one guide me to get multiplicative mod inverse of this equation? - Bitcoin Stack Exchange Stack Exchange Network Stack Exchange network consists of 180 Q&A communities inc...

Why anonymity is important in blockchain, what are the core reasons?

Your question boils down to why privacy is important if you aren't doing anything wrong (not-"legit"). I'll only answer in the scope of Bitcoin, but there's a more principled answer to the broader question. First, the Bitcoin protocol allows any tra...

What do initialprice, price, high, low, volume, bid, and ask mean?

I'm looking at TradeOgre's API which returns this kind of thing when you list the markets: {"BTC-AEON":{"initialprice":"0.00022004","price":"0.00025992","high":"0.00025992","low":"0.00022003","volume":"0.00359066","bid":"0.00022456","ask":"0.0002599...

Is there code in libsecp256k1 that theoretically should be moved to the main Core codebase?

I think the boundary between libsecp256k1 and Bitcoin Core is pretty clear: everything that involves operations on private or public keys is in libsecp256k1. Of course, in theory, anything can be anywhere, but I don't think there is much leeway here...

How does the CHECKSIGADD opcode work? How does it compare to its predecessor CHECKMULTISIG?

James Chiang explained how the CHECKSIGADD opcode works in this Bitcoin Optech workshop. (The code for CHECKSIGADD in the Bitcoin Core codebase is here.) As you can see on the left we have an output script that uses CHECKSIGADD and CHECKSIG opcodes...

Is it possible to generate Segwit bc1 public/private key pair using Electrum command line?

Your privacy By...

How do we know a new transaction is not corrupted/manipulated? [duplicate]

The Bitcoin protocol follows a Unspent Transaction Output system to track the existence and state of all Bitcoin in the system. These are known as UTXOs. All transactions that transfer Bitcoin do so by consuming one or more UTXOs, and create one or...

How are transaction fees split in the network?

All transaction fees go to the miner that published the block in which the transaction got confirmed. If the miner is a mining pool, they tend to have some distribution mechanism to pay out to the pool contributors. Full nodes do not get paid. Users...

Can a transaction make a way to bitcoin block with no fees and what are cost resources of transaction fee? [closed]

blockchain - Can a transaction make a way to bitcoin block with no fees and what are cost resources of transaction fee? - Bitcoin Stack Exchange Stack Exchange Network Stack Exchange network co...

I sent bitcoin from paxful to binance and the status is still showing unconfirmed for the past 2hrs [duplicate]

I sent bitcoin from paxful to binance and the status is still showing unconfirmed for the past 2hrs - Bitcoin Stack Exchange Stack Exchange Network Stack Exchange network consists of 180 Q&...

Why do invalid signatures in OP_CHECKSIGADD not push to the stack?

I've been working through the static test vectors provided by bitcoin core to implement an interpreter. Some surprising behavior I found was that in the case of OP_CHECKSIGADD, if an invalid signature is found, the interpreter fails execution rather...

How bitcoin protocol helps/solves this issue?

In the network nodes below as shown in picture: Let's say A is trying to double spend by sending bitcoins to B,C (A->B) and (A->C) and let's say A tried to relay (A->B) transaction to honest Node - 8 and at this point let's assume that cur...

How does Bitcoin prevent double-spending without penalizing miners?

I'm going to offer a frame challenge. Your scenario makes no sense to me, because you seem to have a wrong perception of how the blockchain works and is propagated on the network. First problem: at 6:02 Node-5 has already heard about transaction A-&...

How is this type of block accepted?

It's not accepted. In a block, every transaction has to be valid by itself, but the whole block has to be valid as well. If anything is wrong about the block, it's simply invalid—there is no "partially right". Let's say a miner creates such a block...

How is a block accepted with one invalid transaction among many valid transactions?

How is double spending is solved in this case?

Let's say Alice sends 5 BTC to Bob and Alice tries to make double spending by again sending those same 5 BTC inputs to carl and lets say that Alice is also a one of the miner node. Here Alice tries to take those 2 double spent transactions into a b...

How is double spending is solved technically by bitcoin code in this case?

doublespend - How is double spending is solved technically by bitcoin code in this case? - Bitcoin Stack Exchange Stack Exchange Network Stack Exchange network consists of 180 Q&A communit...

Can miners double-spend with two transactions in one block?

doublespend - Can miners double-spend with two transactions in one block? - Bitcoin Stack Exchange Stack Exchange Network Stack Exchange network consists of 180 Q&A communities including S...

why int128 in secp256k1?

I assume you're referring to the C implementation of secp256k1 arithmetic, perhaps specfically this pull request? If not, comment and I'll revise my answer. Why do they write an int128 type in secp256k1, when there's already arbitrary length ration...

What are the different kinds of endpoint Lightning nodes a user can choose from and their trade-offs?

Christian Decker answered this at Advancing Bitcoin 2022. Custodial wallets are then further split into account based and hosted channels, sometimes also called multi-tenancy systems, built on top of a single Lightning node that is under the contr...

Why are coefficients a=0 and b=7 used to define the Weierstrass equation in SECp256k1?

Most of the private to public key implementations I've come across do not make use of the equation y^2=x^3+7 (the weierstrass equation defining SECp256k1). One that i often use is in the link below and does not use any external libraries.[EllipticCu...

On signet of bitcoin core, why didn't the average time between blocks I mined accord with the time I set?

I'm new here. I met some problem when I use signet on bitcoin core in docker container. I used this command to work out the nbits value to set the average mining time which is 60s. python3.8 miner --cli="bitcoin-cli" calibrate --grind-cmd="bitcoin-u...

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