Recommended tools for spending from witness scripts and tapscripts?

[BlackHatCoiner]

I just found out Liquid, and I've been experimenting with it since. It's much more flexible when it comes to testing stuff, like disabled or not yet implemented OP codes in Bitcoin.

I've been using scriptwiz.app to write witness and tapscripts. While I can fund these scripts (by paying with P2WSH or P2TR), I cannot spend from them. Elements Core does not allow me to spend from a custom witness script or tapscript, as I see. Is there any good recommendation?

Thanks.

[pooya87]

I don't think such a tool can exist, so you have to write the code for it yourself.

We have had the same problem with uncommon (custom) scripts forever, for example despite P2SH being very old you still can not find any tool that allows spending from any script that it doesn't already recognized or hard-coded into the tool (eg. m-of-n multisig is defined, conditional with OP_IF is not).

[ABCbits]

I don't know any other way beside using createrawtransaction on Bitcoin Core. Although according to https://bitcoin.stackexchange.com/a/120862, you can import your address to Bitcoin Core with help of descriptor (assuming the script can be represented using Miniscript) which should make it a bit easier.

[BlackHatCoiner]

We have had the same problem with uncommon (custom) scripts forever, for example despite P2SH being very old you still can not find any tool that allows spending from any script that it doesn't already recognized or hard-coded into the tool (eg. m-of-n multisig is defined, conditional with OP_IF is not).

OK, thanks. I funded the hash of the following script:

Code:

<0x3044022002748547ba97e986d26b48dc2093c21f04334aea4694470328d605c15971a8f302207501b30f114d1c27e5d8fa903635d9485dca60c705dbdf2a12daf795239d5e5e>
<'hello'>
<'🌎'>
OP_CAT
<0x02211862a1f993b4578d595c3e00b0935cd9ccc29a869cab7a680e36efc2e7b548>
OP_CHECKSIGFROMSTACK

Which is a signed "Hello World" message. It only takes you to publish this script to get the testnet bitcoin from here: tb1qmklyqnchpyfqvz3lkmxf6y8k47fcthwkmffvhu4u8ha0xqrmelrspj7f9a.

But, I'm afraid spending it would be non-standard, wouldn't it?  

Same address has been funded in Liquid testnet, but no one has claimed it, and I'm thinking it may be due to non-standardness there as well: tex1qy85zk844lwd4zazrxhqls07k4sx736h8pcqrjpr2lj58v5l3mhaq32qtrl.

I don't know any other way beside using createrawtransaction on Bitcoin Core. Although according to https://bitcoin.stackexchange.com/a/120862, you can import your address to Bitcoin Core with help of descriptor (assuming the script can be represented using Miniscript) which should make it a bit easier.

Thanks. I'll look on Miniscript. Does that allow any script to be executed, or does it have to be standard?

[ABCbits]

I don't know any other way beside using createrawtransaction on Bitcoin Core. Although according to https://bitcoin.stackexchange.com/a/120862, you can import your address to Bitcoin Core with help of descriptor (assuming the script can be represented using Miniscript) which should make it a bit easier.

Thanks. I'll look on Miniscript. Does that allow any script to be executed, or does it have to be standard?

AFAIK if your script can be represented with Miniscript, Bitcoin Core can execute or spend it. But i never tried it personally and IMO this kind of question should receive better answer either on https://bitcoin.stackexchange.com/ or https://groups.google.com/g/bitcoindev.