Unanswered Questions
2,888 questions with no upvoted or accepted answers
9
votes
1answer
147 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
0answers
192 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 ...
8
votes
0answers
279 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.
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8
votes
2answers
1k 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 ...
6
votes
1answer
32 views
How can I force estimatesmartfee to return estimates on regtest?
Creating an app that utilizes estimatesmartfee, and it works in production, but I use regtest for automated testing and can't get it to return a value.
Looking at bitcoind tests it is splitting UTXOs ...
6
votes
2answers
159 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 ...
6
votes
0answers
275 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
1answer
76 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
80 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
540 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
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
888 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
296 views
How to build Merkle root from merkle branches?
Is there any help/tutorial on how to build the Merkle root from stratum data?
The Slushpool's stratum protocol has an example of a mining job but it does not contain any Merkle branches and I don't ...
5
votes
1answer
387 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
680 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 ...
