Questions tagged [p2tr]

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1 answer
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What is the script assembly and execution in P2TR spend (spend from Taproot)

So I have found and fundamentally understand how P2PKH is assembled from inputs and outputs to create a bitcoin forth-like script for execution. I looked at the SegWit BIP examples section and I found ...
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  • 411
7 votes
2 answers
655 views

Should the Bitcoin Core wallet (or any wallet) prevent users from sending funds to a Taproot address pre activation?

The Bitcoin Core wallet prevents mainnet Taproot descriptors from being imported pre activation (November 2021) as a safeguard. However, you can send mainnet Bitcoin to a Taproot (P2TR) address pre ...
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6 votes
2 answers
579 views

How can I find samples for P2TR transactions on mainnet?

Can I ask for a P2TR transaction id example past block 709632? I was trying to debug one of my scripts and something is wrong when searching for witness_v1_keyhash, and couldn't manually find one in ...
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  • 1,564
6 votes
1 answer
845 views

How can I create P2TR addresses with Bitcoin Core 22.0?

I'm trying to test P2TR with Bitcoin Core, and I don't know how to get taproot addresses. How should I create them using 22.0?
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6 votes
1 answer
190 views

Will P2TR make P2WSH obsolete?

Assuming users have upgraded their wallets to handle P2TR outputs and trust the validation rules of P2TR, would there be any advantage of using P2WSH over P2TR?
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  • 669
4 votes
1 answer
290 views

XPRIV/XPUB type for P2TR

As far as I understand, there is a standard that describes what address types an extended private key or extended public key is intended to derive and it works as such: xpriv/xpub => Legacy ...
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4 votes
1 answer
231 views

Is taproot considered nonstandard to older clients?

When asking an older bitcoind node to broadcast a transaction which includes or spends a p2tr output, how will they respond? Will they broadcast the transaction? Will only certain bitcoind versions ...
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  • 1,359
4 votes
1 answer
487 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 ...
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4 votes
0 answers
231 views

P2TR bech32m mismatch

When attempting to create a p2tr address using the private key 0x0000...01 I get, bc1pmfr3p9j00pfxjh0zmgp99y8zftmd3s5pmedqhyptwy6lm87hf5sspknck9 which does not match the provided test vectors provided ...
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  • 5,176
3 votes
1 answer
173 views

Is there a way to convert a P2PKH address into P2TR?

As far as I understand, Taproot enhances privacy by allowing someone to only reveal a specific key path, which in my understanding means that it's fairly flexible - is it possible to construct a P2TR ...
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  • 35
3 votes
1 answer
369 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?
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  • 669
3 votes
1 answer
124 views

Where can I find taproot spend examples on testnet/signet?

I am in the middle of writing some Taproot libraries and would like some testnet/signet p2tr spends. Is there an easy way to find them? Most explorers don't have any filters like that. Even a list of ...
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3 votes
1 answer
49 views

Taproot signing with PSBT: How to determine signing method?

As far as I can tell there are three ways you can produce a valid Schnorr signature in a Taproot environment: For a p2tr output that uses a BIP-0086 commitment (key spend, sign with internal key, ...
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  • 218
3 votes
0 answers
136 views

Tests for Pay To Taproot addresses?

I am having trouble finding examples showing a known WIF to a valid mainnet P2TR address. I am working on a tool and want to see if my P2TR conversions/encodings are outputting the correct P2TR ...
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  • 5,176
2 votes
2 answers
101 views

tracking invoice address type migration

I'd love to see charts with stats on percent of utxos by invoice address type (specially P2PKH, P2SH, P2SH-P2WPKH, P2WPKH, P2TR), over time; and same for percent of coin supply. No doubt I can pay a ...
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  • 294
2 votes
1 answer
213 views

P2TR: Is pub key hashed in address?

Are the new Taproot addresses (SegWit v1) also a hash of the (potentially tweaked) public key, or is the public key directly encoded into the address, without hashing it?
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2 votes
1 answer
101 views

Using key aggregation (multsig) in P2TR script path spends

I know that it is possible to create a 2-2 multsig using Taproot by combining both private keys into one public key and defining that as the key path spend. I also know that it is possible to use ...
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1 vote
1 answer
109 views

Issue when broadcasting Taproot transaction to older nodes

I'm trying to broadcast a Taproot transaction to random nodes across the network (Testnet3). When I try to broadcast to older nodes like 0.18.0, I get the error "Witness version reserved for soft-...
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  • 13
1 vote
1 answer
1k 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 ...
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1 vote
1 answer
57 views

What is the weight of a P2TR input?

I'm looking for a detailed explanation of the weight, vsize and serialized length of a P2TR input, in the same vein as How big is the input of a P2PKH transaction?.
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1 vote
0 answers
33 views

which wallets/softwares utilize taproot capabilites?

this question is not about being able to pay/receive to taproot addresses as I know there's a list for that here. I'm curious to see if anyone knows about wallets/software that utilize taproot ...
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1 vote
0 answers
64 views

P2TR Scriptpath failing (Timelocked contract)

Goal is to archive the following logic: $alice = A; $bob = B; pk($bob) || (pk($alice) && older(10)) I went through The Taproot Workshop and came up with the following code: from io import ...
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  • 133
0 votes
1 answer
61 views

Can you use un-tweaked public key with P2TR?

Given some public key, is turning it into a working P2TR address and then going back from P2TR to get the same pubkey possible? I've read about the tweaking but don't really get it - do you need to ...
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  • 35
0 votes
1 answer
36 views

Keypath spending: Verify destination address across address formats

In a Tapscript Keypath Transaction (there is an unrelated Scriptpath too) I can have outputs to all possible address? (I.e. to P2PKH, P2SH, P2WPKH / P2WSH and P2TR) I have a list of addresses in all ...
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  • 133