# Unspendable keys in descriptors

**URL:** <https://delvingbitcoin.org/t/unspendable-keys-in-descriptors/304>\
**Category:** Implementation\
**Tags:** miniscript, taproot\
**Created:** [December 19, 2023, 12:46pm UTC](https://delvingbitcoin.org/t/unspendable-keys-in-descriptors/304 "2023-12-19T12:46:39Z")\
**Posts on this page:** 1\
**Showing post:** 31

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**Author:** ![andrewtoth](https://delvingbitcoin.org/user_avatar/delvingbitcoin.org/andrewtoth/32/576_2.png) [@andrewtoth](https://delvingbitcoin.org/u/andrewtoth)\
**Post date:** [January 17, 2025, 2:55pm UTC](https://delvingbitcoin.org/t/unspendable-keys-in-descriptors/304/31 "2025-01-17T14:55:19Z")

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Created a BIP draft using the ideas from here.

> <https://github.com/bitcoin/bips/pull/1746>
>
> This is a BIP Draft for an \`unspendable\` key expression that can be used as the …taproot internal key. The expression creates a provably unspendable key that is deterministically created with only the descriptor. This allows all participants to verify that the keypath is unspendable, while also hiding that fact from outside observers.
> 
> Previous discussion on delving https://delvingbitcoin.org/t/unspendable-keys-in-descriptors/304.

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