How to use beneficiary to find member address?

[yuhao-git-star]

Hey, I use and study this example.
I have some trouble, How to use beneficiary to find member address? or any find beneficiary's member address method?

Thank you for your time, Solana is great.

lockup

[armaniferrante]

Good way that's not implemented

• use a deterministic program derived address with the beneficiary address as the seed.

Bad way that's implemented:

Use getProgramAccounts with a filter. In anchor you can do this with: program.account.member.all(Buffer.concat([registarar.toBuffer(), beneficiary.toBuffer()]));, where the registrar and beneficiary are public keys.

[armaniferrante]

Closing since issues are for dev related purposes.