Version: 22.0
I am trying to check if the input 0647b5d109a17cec1a8ef0daaba1a2fa7c149be90378dc6558a69bfd7a5a3c61:7 exists in the utxo set.
So I ran
bitcoin-cli utxoupdatepsbt "cHNidP8BAFIBAAAAAWE8Wnr9m6ZYZdx4A+mbFHz6oqGr2vCOGux8oQnRtUcGBwAAAAD/////AQDh9QUAAAAAFgAU2p9ek8b0XqED4coMbbrJsdkrWzEAAAAAAAAA"
But the returned PSBT show me that witness_utxo is not set.
I would expect it to be filled.
How can I query the utxoset to know if an utxo has been spent?
You can use gettxout to check if a utxo is in the utxo set.
The reason this is not working is because utxoupdatepsbt only works for segwit outputs. The output in question is a P2SH output, so it is not being added to the psbt. If you provide a descriptor that corresponds to this output, and that descriptor indicates it is actually a p2sh-segwit output, then it will be added to the psbt.
It makes sense. I wished that it made an attempt to get the witness_utxo, even without being segwit, but gettxout might solve my problem.