Feature request: sign and validate

[PMK]

Hello Phoenix/ACINQ

I would like to sign and verify a message using the static on-chain address of my wallet.

Some brokers require by law to sign a message using an on-chain address as their KYC policy. If done, I then can send fiat money directly to this wallet via this broker and Phoenix will add the liquidity to my lightning wallet. Signing a message from the broker once using the static on-chain address and validating a message is a feature I would like to use in Phoenix. Can this be implemented please?

Is there already a workaround to sign a message, like importing in Sparrow/Electrum?

[tioneb22]

I would like the ability to sign messages as well, this will help decentralize Bitcoin.

I have an ASIC (more on the way) and I'd like to mine with Ocean and take advantage of their Lightning payouts. I don't want to setup another Lightning node and would like to use my Phoenix wallet. Ocean's signing scheme requires the signature to be from the child address and not the xpriv/parent key.

I believe the signing feature is the only missing piece for Phoenix to be compatible with Ocean LN payouts, as it already supports generating a Bolt12 offer / URI.

Can this be made into a high priority request for the sake of decentralized template construction?

[tioneb22]

I believe the signing feature is the only missing piece

Nvm, it also needs to support a description.

[beatagent]

I would also like to see the feature sign/verify message as it is possible with breez for example.
Thank you.

[markcross]

De facto requirement for me

[reel]

Any updates on this?