Unanswered Questions
415 questions with no upvoted or accepted answers
5
votes
0
answers
195
views
How to approach building a custom UTXO index on top of a full-node
I want to avoid physically importing addresses into a wallet. I want to write a UTXO indexing system on a per-address basis.
I often wonder how a wallet can keep track of all of its addresses' UTXOs, ...
- 77.9k
5
votes
0
answers
772
views
Bitcoin RPC: How to find the transaction that spends a TXO?
I suspect there is no good way to do it.
However is there any sub-optimal way to find the transaction that spends a transaction output (knowing the txid and index) with Bitcoin RPC?
Assuming txindex=1 ...
- 77.9k
4
votes
0
answers
67
views
How to calculate the hashes in Lightning
I was wondering how I calculate the hashes regarding BOLT03 Specification:
The Revocation Pubkey is calculated like this:
revocationpubkey = revocation_basepoint * SHA256(revocation_basepoint || ...
- 10.4k
4
votes
0
answers
305
views
Creating a P2SH-P2WPKH using Bitcoin Functional Test Framework
I'm using the Bitcoin Functional Test framework to understand how SegWit works by analyzing and building a P2SH-P2WPKH transaction.
When I run my code the transaction gets created, but when I inspect ...
- 10.4k
4
votes
1
answer
78
views
What are the malleability threat vectors when passing PSBTs to other actors?
If I am passing a PSBT (Partially Signed Bitcoin Transaction) between multiple people, and I pass on my signature for my UTXOs for given inputs, can someone take advantage of malleability and cheat me ...
CommunityBot
- 1
4
votes
1
answer
1k
views
Generate addresses from Trezor's xPub using Python
I am trying to generate BIP32 HD addresses from my Trezors xPub key.
I keep getting errors with most of the libs our there. What am I missing?
pywallet:
from pywallet import wallet
xpub = '...
CommunityBot
- 1
4
votes
1
answer
2k
views
Building Signed Bitcoin Transaction in Java
I have been attempting to build my own raw transaction generator in Java which I can then broadcast on the testnet network. The problem is when I attempt to broadcast the transaction it says there is ...
CommunityBot
- 1
4
votes
0
answers
413
views
How to explore transaction chain via Original Bitcoin API as blockexplorer does it
Is there any possibility to explore transaction chain via Original Bitcoin API (https://en.bitcoin.it/wiki/Original_Bitcoin_client/API_Calls_list) as the blockexplorer does it.
If not, why?
CommunityBot
- 1
3
votes
0
answers
24
views
In Utreexo, how is it guaranteed that the validator has the same accumulator state as the proof-generator?
In Utreexo a validator node (fully validating Utreexo light node), when validating transactions, uses the proofs supplied by the proof-generator (a Utreexo-aware full node, bridge node).
As far as I ...
- 384
3
votes
0
answers
37
views
How to broadcast transactions in bitcoin regtest mode?
I build three nodes named A,B,C based on bitcoin-regtest image of docker. And these three nodes are in the same network which means they can communicate with each other.
In node A, I use
bitcoin-cli -...
- 77.9k
3
votes
1
answer
475
views
Partial private key recovery
I had the pleasure of setting up a Bitcoin wallet using the Blue Wallet app and diligently noted down the 52 characters of my private key on a piece of paper for backup purposes.
Upon revisiting the ...
- 1
3
votes
1
answer
95
views
How to make sure the user receives lightning payment?
I am working on a side project to allow users to receive some payments from it. When a user clicks a button to withdraw to a lightning address, my webapp makes a request to the host of that lightning ...
CommunityBot
- 1
3
votes
0
answers
219
views
How can inputs be retrieved efficiently when parsing the bitcoin blockchain?
I downloaded the Bitcoin blockchain. I have a full node and I would like to do some parsing. I use RPC to send commands to Bitcoin Core from my Python program. When I get a block it works fine but the ...
- 77.9k
3
votes
0
answers
51
views
Calculation of different Pubkeys in Lightning according to BOLT03
Lightning uses different Pubkeys to gain more privacy and security, I am not sure how they are calculated. In BOLT03 it says:
The corresponding private keys can be similarly derived, if the basepoint ...
- 77.9k
3
votes
2
answers
388
views
In Electrum, how does one watch/poll a wallet for an incoming payments to a certain address via API?
I want to create a simple way to accepting bitcoins on my own, using Electrum. I don't except big volume. I suppose, I'd have at most a handful of incoming payments in the beginning.
That is, I ...
CommunityBot
- 1