All Questions

0
votes
1answer
7 views

How to calculate segwit transaction fee in bytes?

I'm trying to calculate SegWit transaction fees in bytes, I have two Segwit inputs and 2 segwit outputs. can anyone calculate this transaction fees if I'm paying 100 Sat per byte?
5
votes
1answer
168 views

Could Neutrino technically as side-effect, incentivize centralization of the bitcoin network?

TWO questions on Neutrino:: 1) Could Neutrino technically as side-effect, incentivize centralization of the bitcoin network? Or other formulation: ...hinder higher degree of decentralization? Why ...
1
vote
3answers
19 views

In case of a grouped transaction, how to determine who sent what to whom?

Trying to understand how grouped transactions work, I came accross the following transaction on blockchain.com : There are many senders, and even more receivers. For instance, the first sender on the ...
0
votes
0answers
14 views

How can I generate public address from an xpub key in Java?

I have an xpub key with which I want to generate all addresses which have been used or will be used and then find out the keys which have balance. Here's a sample xpubkey with balance- ...
2
votes
0answers
19 views

How to make a homomorphic preimage/payment hash with current lightning network / Bitcoin implementations?

If I remember / understand it correctly by using the mechanisms from the scriptless scripts paper we could easily create homomorphic preimages / paymenthashes. I think this would be a very desirable ...
0
votes
1answer
17 views

Confirmed transaction but unspent

Hi, I have a serious issue as this transaction is successful but the recipient insists that it's not in her wallet neither did she get any sort of confirmation about the transaction, I have been ...
1
vote
1answer
16 views

Transaction with duplicate address in the output

I came across this transaction and noticed that there's duplicate address for the output part. https://live.blockcypher.com/ltc/tx/ada86c7d6f46f712bfa04982f17ce9cd9d4c2560e3493de9c22f8b135ece6cb9/ ...
0
votes
1answer
9 views

Where to find rpcauth.py for configuring rpcauth in bitcoin.conf on Ubuntu

I can't find the python file to create the rpc credentials. According to the documentation it should reside somewhere here: using the output from the script in share/rpcauth/rpcauth.py
0
votes
3answers
41 views

What happen when 2 transactions with one doublespending the other reachs the same block?

Let’s have 2 transactions. The second one is duplicating Input of the first one. Both have very high fees so they are selected by miner to be included in the same block but before passing validation (...
0
votes
0answers
18 views

Is it possible to determine the wallet ID that received my fund from one account to another?

I am new to bitcoin. I opened an account with Coinbase and also an account with Blockchain. I transferred about $35 worth bitcoin from Coinbase to an address I generated from my Blockchain wallet. ...
1
vote
1answer
28 views

Is Bech32 transaction on blockchain.info size accurate?

I have made a transaction and paid like 120 sat/B, on blockchain it says that I've paid 78.995 sat/B and noticed that transaction size is 191 (bytes) Transaction size supposed to be: 102 (input) + ...
0
votes
0answers
17 views

Exception CompactSize when I parsering a nuimbar od the blk file >= 976

I wrote a bitcoin core parser, for my personal project and because it helped me to start understanding the bitcoin protocol as a data structure. This project mainly parsers every blk file and creates ...
0
votes
1answer
16 views

Recover Bitcoin Wallet info

I sent some (worth around 1000usd) bitcoins to one of my wallets and doesn't remember which wallet it was. Now I'm checking wallet and seeing balance is still there. Can somebody tell me how do I see ...
2
votes
1answer
27 views

Proof of Stake - double spending

I'm unsure how Proof of Stake prevents double spending. In PoW it's evident that I need 51% of the hashing power of the network, to "overtake" the real chain with my fraudulent fork. But what stops ...
0
votes
0answers
13 views

How can a ripple wallet trust server?

How can a wallet using ripple-lib to interact with the ledger be certain it is seeing the real consensus ledger? If an attacker has control of the rippled server, or the connection to it, what is to ...
1
vote
1answer
43 views

How to uncompress a public key?

Simple question but I couldn’t find the answer anywhere. What’s the 65 bytes version of those public keys ? 0229b3e0919adc41a316aad4f41444d9bf3a9b639550f2aa735676ffff25ba3898 ...
5
votes
1answer
24 views

What's the distinction between BIP 157 and BIP 158? Are they supported by Bitcoin Core?

BIP 157 and BIP 158 are both concerned with Compact Block filters. What is the distinction between them, and which of them does Bitcoin Core currently support?
0
votes
0answers
9 views

Is it possible to send a token from or to several addresses in Omni with a single transaction?

Simple question but I couldn’t find the answer anywhere. Is there something like using several inputs and outputs in Bitcoin ?
3
votes
1answer
16 views

Is there a way to abort a stuck lightning network payment?

I recently had this problem IRL: tried to pay in a coffee shop with LN, but my channel partner was "sleeping", so after a while I paid in cash. Then, 5 min later, the server comes back online, the LN ...
0
votes
0answers
9 views

Is there any payment processor like Paypal that can be integrated in Angular? [on hold]

I am looking for a cryptocurrency payment processor that can be integrated easily with Angular (without need of backend / backend parameters like callback/IPN/OrderID etc) For FIAT, Paypal is there : ...
1
vote
1answer
14 views

How do Lightning Explorers like 1ML register closed channels?

I want to do analytics on unilaterally and mutually closed channels. To do so I need to scan know when channels close. It seems to me there's no other way than to actively scan the network graph for ...
1
vote
0answers
25 views

Stripped segwit data

I have two client Bitcoin, 0.17.0 and 0.12.0 and I want to see the difference between the same transaction. 0.17 has segwit, 0.12 doesn't have. If I do that RPC call in 0.17.0 /bin/bitcoin-cli -...
-4
votes
0answers
26 views

My conclusions about the Lightning Network and a request for critique by smarter people! [on hold]

I am writing an in-depth article about the Lightning Network. I want it to be comprehensive and balanced, educating people on the state of LN, how it works, as well as on current internal debates over ...
2
votes
1answer
68 views

How scalable is the current routing implementation for lightning?

What are the weaknesses we face with lightning routing currently? How many nodes do we expect it can handle now? What is being done to make it scale in the future?
0
votes
0answers
11 views

Public key vs Bitcoin address [duplicate]

As i've read on many websites and papers, the bitcoin address is made by hashing the public key. And i've read that that's done because we don't want the public key to be public until money is spent. ...
0
votes
0answers
9 views

Can I predict high volatility moments/great movements for Bitcoin? [on hold]

In stock market we can know in advance that in certain moments there can be some great movement to one of the sizes. For example, on Gross Domestic Product (GDP) announcements. Are there some special ...
0
votes
0answers
11 views

Is Loot.GG an investment worth my Crypto? [on hold]

I've seen the 2019 videos about this website so I'm sure no one has asked. With that said I would like to know can websites like this one make a living off traffic and handing out crypto? Please help ...
1
vote
1answer
13 views

Child Pays for Parent transactions get stuck on testnet

I'm building a service prototype by reusing Electrum code and generated 4 consequent transactions which are CPFP type on the testnet. They are staying unconfirmed for several hours but test ...
3
votes
1answer
29 views

What is the current Status of major proposed BTC upgrades like Taproot, MAST, Submarine Swaps?

I have read during the last year about some very interesting BIPs or initiatives. I am not asking for their explanations, just would be great if anyone would know about their simple status as of now, ...
0
votes
0answers
67 views

Are there still miners or mining pool which refuse to implement SegWit?

It was well known that initially while SegWit got more than 50% of hashrate after activation that a part of the mining pools refused to implement it. But are there still blocks being mined by miners ...
0
votes
0answers
16 views

Is there any free for trading cryptocurrency exchange? [on hold]

I have found these but each one has a problem: Cobinhood. Very low liquidity. Daxico. It does not look trustable. Zaif. They are not allowing new accounts. Liquid.com. It use to be free, not anymore....
0
votes
0answers
33 views

How to dissect or decode a BTC transaction?

I used a packet capture to capture the transaction of bitcoin, and I got the following: ...
0
votes
2answers
36 views

Logic thread between output folders and input transactions

I'm studying the bitcoin protocol and I don't have very clear things, for example the logical thread that exists between an output transaction and a subsequent input transaction, where that output is ...
-3
votes
0answers
23 views

CAN I RECEIVE BITCOIN FROM PANAMA FLORIDA

Please can I receive BITCOIN from (Panama Florida) to my Nigeria BITCOIN wallet.. Someone in panama city Florida will be buying and sending me 600$ worth of Bitcoin. She haven't create the account ...
0
votes
0answers
11 views

How do I get a pool to pay me the accepted shares? [on hold]

How do I get the pool to pay me the accepted shares ?
0
votes
2answers
38 views

How is pool hashrate share name known?

Since it’s not possible to know mining pools nodes addresses, how do we know the that a specific node owing 15% of share belongs to btc.com for example ?
0
votes
1answer
20 views

Hash rate, transaction and block relationship

I'm aware that when the hash of the block header (block hash) is below the difficulty target, a block is deemed as validated. But because I've never run a bitcoin node before (will soon), I had a ...
1
vote
1answer
91 views

Besides transaction validation, are there any other uses of the Script language in Bitcoin

Script's stack operations are used to validate signatures and scripts of transaction inputs and outputs. Is Script also used to validate block, network, or any other data? Seem like there are a lot ...
0
votes
1answer
14 views

Is it possible to get the full list of synced nodes ɪᴘ on the network?

There are many website like https://bitnodes.earn.com/ but I’m failing to understand if they collect nodes from compulsory submission on the web interface for statistics purposes only or they use a ...
1
vote
1answer
18 views

Block size limit in Bitcoin v0.01

In main.h (line 17) we have a constant MAX_SIZE static const unsigned int MAX_SIZE = 0x02000000; which in decimal format equals to 33554432 (32MB) This constant is used to verify if the block ...
0
votes
2answers
13 views

Public Addresses: '3' vs '1' in front [Bitcoin]

I just wanted to confirm, is it true that for a bitcoin (public) address it should always have a '1' in front of it. For certain transactions though I see that there is a '3' in front. How is this ...
0
votes
1answer
24 views

How and why we need to validate a transaction?

I've starting doing some researches about the Bitcoin protocol and the blockchain. I'm trying to understand all the sections in the Bitcoin white-paper. So far, i couldn't understand what is the ...
1
vote
2answers
70 views
+50

What’s the purpose of checking for input overflow?

Everyone knows this famous fix for block 74638 which still exists in other files. But there’s something I can’t understand, why check for inputs overflow since it’s not possible to have enough utxo ...
1
vote
2answers
57 views

Why do large blocks increase the probability of chain reorgs?

After the recent two chain reorgs taking place in Bitcoin Cash SV, I am finding a number of developers stating that large blocks are the reason for the reorgs: "Almost each time someone is trying to ...
-1
votes
0answers
23 views

Bitcoin Percentages with PHP. Are my calculations correct? [on hold]

Need to determine bitcoin percentages in PHP. I'm using this function: $bitcoin_price = "0.01096616"; $percentage = (3.9 / 100) * $bitcoin_price; echo $percentage; My result is 0.00042768024 from 3....
2
votes
0answers
25 views

What in detail makes the Coinbase in the Genesis Block unspendable? [duplicate]

I was aware that the Genesis block's reward was unspendable, and that there was no UTXO for it in the UTXO Set. I thought that this was due to the Genesis block being hardcoded and the actual ...
3
votes
1answer
35 views

Differences to CCompactSize and CVarInt

I'm developing a parser bitcoin core and I have a problem whit the type CVarInt, I using the decodifier mode of the CCompact size but at the block 976 I Have a problem whit the type, because the value ...
1
vote
1answer
30 views

How can a person reasonably prove they're running a full node?

I mean running themselves in a computer they control and not just fetching blockchain data from a public blockchain API or something like that. I imagine that may be impossible, but there could at ...
0
votes
1answer
15 views

18: bad-txns-inputs-spent

I want sendRawtransactoin to the testnet ,bug i got "18: bad-txns-inputs-spent" My input is unspent on the Testnet ,Help ! { "Version": "1", "LockTime": "0", "Vin": [ { ...
0
votes
0answers
30 views

iOS wallet with Bech32 and Xpub keys

Is there a iOS bitcoin HD wallet with Bech32 support and access to your extended public and private keys out there?

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