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Results tagged with p2tr
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user 121614
Pay to Taproot is the native SegWit v1 output format. It commits directly to a public key which can optionally be tweaked with the hash of a script tree. This combines capabilities of previous output formats which were usually based on either a public key hash or a script hash. P2TR addresses are Bech32m encoded and start with the prefix `bc1p`.
8
votes
Accepted
How do the fees for taproot transactions compare to P2WPKH?
Specifically, P2WPKH (Native SegWit) inputs and outputs take 68 and 31 vbytes in a transaction, respectively, while P2TR (Taproot) inputs and outputs take 57.5 and 43 vbytes, respectively. …
- 10.4k
7
votes
Accepted
How to extract the internal key of a simple P2TR address?
A P2TR address encodes a public key using Bech32m, which you can directly decode. …
- 10.4k
6
votes
Accepted
Is there an economic incentive to use P2WSH over P2TR?
Yes, having only a single leaf and all else being equal, a P2TR input costs 34 witness bytes (8.5 vbytes) more than a P2WSH input with the same script. … However, almost all current usage of P2WSH (which consists mainly of multisigs and Lightning channels) can benefit from the features of P2TR to reduce costs. …
- 10.4k
5
votes
Accepted
How can I tell if a Taproot input is a key path spend or a script path spend?
In a key path spend the sender just provides a signature that's valid for the public key in the P2TR output and the transaction being signed. … In a script path spend the sender needs to provide a script, a proof that the P2TR output commits to this script (called the control block) and the initial stack to the script in order to satisfy it (which …
- 10.4k
5
votes
Accepted
"Witness program hash mismatch" code -26 when broadcasting a transaction
"Witness program hash mismatch" in a Taproot script path spend means the Taproot commitment wasn't successfully verified, in other words the internal key tweaked with the taptweak hash (constructed fr …
- 10.4k
3
votes
Accepted
How can I find the public key corresponding to a P2TR input?
up the transaction output referenced by the txid and index in the input, so there's rarely a reason to use a method that only works for some output scripts, and requires you to know the output type (P2TR …
- 10.4k
3
votes
Accepted
non-mandatory-script-verify-flag (Invalid Schnorr signature) when trying to reveal a TR output
Your transaction is a key path spend, not a script path spend (it only has one witness item, the signature). Perhaps you've calculated the sighash for a script path spend but then only included the si …
- 10.4k
3
votes
Accepted
Validation of segwit v0-v1 tx automatically adds OP_CHECKSIG?
P2SH, P2WSH and P2TR-script-path require the recipient to reveal a script (which usually includes OP_CHECKSIG or other signature checks) and satisfy it. … Finally, P2TR-key-path requires only a signature. …
- 10.4k
3
votes
Accepted
How can taproot transactions manage to store so much data?
In P2TR, the scripts are only implicitly bounded by the block weight limit. …
- 10.4k
3
votes
Accepted
Is there a point to using taproot transactions over P2WSH if I only want to use the script p...
See question: Is there an economic incentive to use P2WSH over P2TR? … Privacy: Because P2TR combines key and script spending, an unspent P2TR output reveals less information than either a P2WPKH or P2WSH output. …
- 10.4k
2
votes
Can I spend a P2PKH transaction via the script-path of P2TR?
So no, you can't spend a P2PKH UTXO using P2TR rules. … You can do the same with script-path P2TR (example transaction), but again, not useful. …
- 10.4k
1
vote
Accepted
Can one infer the multisig status of a P2TR spend?
This is possible with every output type except for P2TR. … Merklized Alternative Script Trees
A P2TR output can optionally commit to a script tree (MAST). …
- 10.4k
1
vote
Accepted
Combine two p2tr addresses into one
Yes, since the spending conditions of a P2TR address are either to provide a signature for a public key or to satisfy any of the scripts in the script tree, the spending conditions of multiple P2TR addresses … However, this can only be done by someone who knows the structure of the original P2TR addresses' script trees, as the addresses only encode the public keys. …
- 10.4k
0
votes
Why there duplicated transactions on the blockchain? (with different hashes)
These are BRC-20 mint transactions.
If you look at any of the inputs, you can see it is a Taproot script path spend that includes an unexecuted branch with several data pushes, the first of which push …
- 10.4k