Questions tagged [taproot]

Taproot is an upcoming Bitcoin softfork designed to improve scripting and multisignature capabilities.

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1answer
247 views

What problems identified with bech32 addresses have been resolved with the updated bech32m?

What problems identified with bech32 addresses have been resolved with the updated bech32m? I am aware of one problem with the original bech32, namely length extension mutation weakness but I don't ...
7
votes
1answer
266 views

What are the different upgradeability features in the BIP-Taproot (BIP 341) proposal?

What are the different upgradability features in the BIP-Taproot (BIP 341) proposal? Why are there so many upgradability paths? Is there something an annex can do that a leaf version can't? This ...
4
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3answers
808 views

What are some interesting applications of Taproot “smart contracts”?

From a strictly technical perspective, MAST makes a lot of sense. However, understanding it in the context of Taproot/Tapscript does require prior knowledge in Merkle Trees and hash functions. What ...
3
votes
1answer
278 views

I would like to dig into the open Taproot PR to understand it, test it and possibly even review it. Any advice or recommendations?

I would like to dig into the open Taproot PR (PR #19953) to understand it, test it and possibly even review it. Any advice or recommendations?
2
votes
1answer
70 views

How can I spend from a P2TR address on Signet with the Bitcoin Core wallet in 22.0?

Apparently (credit 0xB10C) there are only 20 key-path and 5 script-path spends of P2TR outputs on the Signet blockchain today (July 7th 2021). How can I increase this number today with say the Bitcoin ...
2
votes
1answer
114 views

Can we experiment on Signet with multiple proposed soft forks whilst maintaining the ability of full nodes to validate the Signet chain?

One of the goals of Signet is to test proposed soft forks before they are activated on mainnet. Not only does this mean proposed soft forks such as Taproot that at the time of writing (August 2020) ...
1
vote
1answer
481 views

How do I construct a P2TR address if I just want to use the key path?

I want to create a P2TR (Pay to Taproot) address but I just want access to the key path spend, I have no use for the script path spend in this specific example. What should I do in regard to the ...
0
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1answer
236 views

Who would benefit from Taproot deployment?

In the discussion of activation parameters for Taproot, a Bitcoin Core contributor stated that "Taproot would only benefit 5% of the users" citing that it would especially benefit complex ...
3
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1answer
654 views

What makes cross input signature aggregation complicated to implement?

What makes cross input signature aggregation complicated to implement? Other than for design space reasons why didn't it make it into BIP-Taproot? (Key aggregation within one input can be achieved ...
3
votes
1answer
175 views

What are the risks of a lower-than-95% activation threshold for soft forks (particularly SegWit)?

95% seems exceptionally conservative, especially given the evidence of vetoing by a subset of Bitcoin miners. What risks does, say, 60% over a longer activation period hold vs 95% for SegWit?
5
votes
1answer
274 views

What are the sizes of single-sig and 2-of-3 multisig taproot inputs?

There was a Twitter discussion about the sizes of inputs and Taproot came up. What are the input sizes for Taproot inputs? Please cover both the key path spend (single-sig or default spend) and 2-of-...
5
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2answers
817 views

Does the Taproot update benefit all bitcoin users? or is it for a selective amount of people

I came across a blog post where it mentions that the taproot update is promised to speed up BTC transactions, lower their fees, etc. but does this mean that literally, anyone sending or receiving BTC ...
4
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2answers
1k views

Will “Taproot” replace Lightning Network?

Can somebody explain to me if Taproot will fix the issues that Lightning Network solves, without the Lightning Network? That is, near-zero fees, privacy and fast settlements? Will Taproot allow me to ...
3
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1answer
130 views

How do the fees for taproot transactions compare to P2WPKH?

How would the most basic taproot transactions (not involving scripts) compare to P2WPKH transactions in terms of vbytes or fees?
2
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1answer
187 views

How much will Taproot boost Bitcoin's transactions per second?

Currently, the bitcoin network does about 3-7 transactions per second. How much can taproot theoretically increase that? Assuming a current throughput of 5 transactions per second, we get only about ...
1
vote
1answer
123 views

I'm digging further into the open Taproot PR. Can you explain the bip340_test_vectors?

I'm digging further into the open Taproot PR. I found these bip340_test_vectors. They have secret keys, public keys, aux_rand (auxiliary randomness), message, signature and whether the signature ...
1
vote
2answers
203 views

What is the benefit of forced signaling in a soft fork activation mechanism?

What is the benefit of forced signaling in a soft fork activation mechanism? e.g. the MUST_SIGNAL phase in revised BIP 8. I understand the benefits of setting lockinontimeout (LOT) to true (some of ...
0
votes
1answer
56 views

How do I debug Taproot functional tests using pdb?

I am looking at the some of the Taproot functional tests such as feature_taproot.py to review the open Taproot PR. I would like to use pdb to debug these tests. Can you provide some guidance on how to ...
0
votes
1answer
176 views

Taproot and Large multisigs

I have seen lot of people saying that taproot is only for large multisigs used in few projects or companies. BlueMatt mentioned similar thing in last Taproot activation meeting: 13:01 < BlueMatt&...