Save HEX pubkey as well as the pubkey for each validator

[HarleyAppleChoi]

Feature description

Saving HEX pubkey into database so that we do not need to calculate that everytime we want to get HEX from pubkey

Implementation proposal

When adding a validator we can map to a HEX pubkey as well.

[kwunyeung]

@RiccardoM @bragaz do you know if there are methods in the SDK which convert the validator bech32 pubkey back the Tendermint validator hex address? We need this in BDJuno to map the signatures in the block.

[RiccardoM]

@kwunyeung If you have the public key, you can use the .Address() method that's inside the PubKey interface.

BTW, where do you need to map it? There might be easier ways of doing it using GraphQL

[kwunyeung]

@RiccardoM it's to record if the validator's precommit signature exists in the current block. For example, http://lcd.morpheus.desmos.network:1317/blocks/5000 the signatures are referencing the validators in hex address but what we can get from validator list are the addresses in bech32. We should save the hex address along with the validator information.

[RiccardoM]

@kwunyeung I guess that can be done easily by changing how Juno saves the data, adding the HEX address and pub key to the validator table. Should I take care of that?

[HarleyAppleChoi]

@RiccardoM Yes, please take care of that inside Juno, feeling that is better than doing it in BDJuno🧐

[RiccardoM]

Moved to forbole/juno#4