Unanswered Questions
2,879 questions with no upvoted or accepted answers
9
votes
1answer
128 views
Can we construct a UTXO which is spendable only via proof of work?
Do the current Bitcoin opcodes and transaction size limit allow constructing a UTXO which is only spendable if a specified amount of work has been performed?
So the spender, would provide a nonce as ...
8
votes
2answers
953 views
How to get notification on bitcoin receive with bitcoin core
How can I get Bitcoin receive notifications with Bitcoin Core. I have tried the walletnotify and blocknotify options. walletnotify is fired two times when I send or receive bitcoins. And with ...
7
votes
0answers
146 views
How did Nakamoto untraceably pay for registering bitcoin.org?
Wikipedia says "Nakamoto created a website with the domain name bitcoin.org" and "transferred several related domains", while bitcoin.org says it was "originally registered and owned by Bitcoin's ...
7
votes
0answers
248 views
Why did the lightning network implement a gossip protocol?
As pointed out by many lightning developers in the past (e.g. Rusty's 1 million channel challenge) the gossip protocol is quite noisy and a part of the BOLTs causing many engineering challenges.
...
6
votes
0answers
247 views
Did the introduction of VerifyScript cause a backwards incompatible change to consensus?
My question is about the changes to bitcoin done by commit range [a75560d8, 6ff5f718], and their effect on consensus.
Out of this range of four commits (all attributed to satoshi) during the dates ...
5
votes
0answers
62 views
Are there any “slow” sidechains? What are the tradeoffs?
Are there any examples of sidechains which target a block time much longer than bitcoin? Could a sidechain be made "slow enough" such that the size of a proof (SPV proof?) for it could actually fit ...
5
votes
0answers
73 views
How to emulate SIGHASH_NOINPUT using CHECKSIGFROMSTACKVERIFY?
I read on bitcoin-dev that CHECKSIGFROMSTACKVERIFY (CHECKDATASIG in BCash) can be used to emulate new sighash flags. How would that work, concretely? As an example, please provide an example update ...
5
votes
3answers
452 views
19 out of 24 words of BIP39 passphrase (brute-force last 5?)
I have managed to lose 5 words of my 24 word Ledger Nano S recovery phrase. I have words 1-19 but I am missing words 20-24.
I have significant holdings on the wallet so would very much like to recover ...
5
votes
2answers
135 views
How could Schnorr signatures be aggregated across the whole transaction?
I am studying the MuSig protocol and am having trouble grasping certain segments. This is my understanding thus far:
In current Bitcoin CHECKMULTISIG format, the size of the signature grows linearly ...
5
votes
1answer
355 views
Mixing Unequal Inputs
Let's say have 3 inputs (alice, bob, satoshi): 0.3, 1.3, 1.6.
We can mix these inputs for example like this: 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.1, 0.1.
Or like this: 1.3, 1.3, 0.3, 0....
5
votes
1answer
1k views
How do I remove Wallet from Bcoin?
I'm playing with bcoin cli and created lots of wallets. Is there any way to remove wallet via WalletDB Api?
5
votes
1answer
876 views
Creating Mining Competition on regtest
As we know , Bitcoin core-Regtest is used to set up our own blockchain starting from Genesis Block. I have created Two nodes on my localhost running on different ports (I am using Windows 8.1). They ...
5
votes
1answer
373 views
Can*t call chainActive.Tip()->nHeight in core.cpp
I want to call chainActive.Tip()->nHeight in core.cpp. It is not possible, I am interested in every idea.
https://github.com/LIMXTEC/BitSend/blob/DEV-joshafest/src/core.cpp
Here is an example :
...
5
votes
2answers
653 views
Is it possible to discover the set of bitcoin addresses from a public key?
I'm trying to find the set of bitcoin addresses from a public key associated with a user just to analyse this user transaction. Is there any way to derive/find all the addresses that have been ...
5
votes
1answer
1k views
Cannot create a transaction
I am trying to create a transaction on the bitcoin testnet, using bitcore:
Error Message :
SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data
Here is my code:
var ...
