BIP 329 "Wallet Labels Export Format" Support

[gabridome]

The spec is new but it seems not invasive.
I find particularly interesting the outputs's labels.
https://github.com/bitcoin/bips/blob/master/bip-0329.mediawiki

[thunderbiscuit]

I like the labelling idea a lot. But in this case this might be information that would be stored in the BD itself (unless the cli kept a separate persistence of some sort), and so I think this issue is better suited for BDK itself rather than bdk-cli.

[notmandatory]

I agree this looks like a good spec to add support for but the feature should be added in the bdk repo, once there we can enable it in the bdk-cli tool. Moving this issue to the bdk repo for now.

[xavierfiechter]

What about "Label Import" ?

[praveenperera]

Can I help with this?

[notmandatory]

Hi @praveenperera yes I don't know of anyone else looking into this issue.

[praveenperera]

@notmandatory sounds good, the implementation looks relatively simple, I just have to familiarize myself with BDK a bit more to figure out the place to add it.

I’ll probably need this in a few weeks, so assuming no one else has picked it up by then, I’ll work on it at that time.

If someone else wants to take it before then, feel free.

[notmandatory]

Feel free to ask questions in our discord text or weekly voice chats too.

[praveenperera]

Made a standalone crate, maybe it makes sense to incorporate it into bdk?

https://github.com/bitcoinppl/bip329?tab=readme-ov-file

[storopoli]

Yes, it does make sense. I can close bitcoindevkit/bdk#1526 in favor of your bip329 crate.
We just need to integrate it to the BDK's Wallet.
I did for the input and output label types.
You can check it at bitcoindevkit/bdk#1526.
I still have no idea how to integrate with the Wallet for the other label types from BIP 329.