Introduction

IRISHub v2.0 changed the generative structure of the entire account system from auth.BaseAccountProto to ethermint.ProtoAccount , resulting in incompatibility of newly created accounts;

Note: Accounts before the v2.0 upgrade will not be affected and can still be used normally

The following content takes nyancat testnet as an example：

For accounts before the v2.0 upgrade, the query structure through LCD is as follows: https://lcd.nyancat.irisnet.org/cosmos/auth/v1beta1/accounts/iaa1e0rx87mdj79zejewuc4jg7ql9ud2286g2us8f2

{
     "account": {
         "@type": "/cosmos.auth.v1beta1.BaseAccount",
         "address":"iaa1e0rx87mdj79zejewuc4jg7ql9ud2286g2us8f2",
         "pub_key": {
             "@type": "/cosmos.crypto.secp256k1.PubKey",
             "key":"AiOFJ3Jclq/8y3xV85ALNFuA7FJo1IMoTxYoB3ddMrMr"
         },
         "account_number": "1251",
         "sequence": "12983"
     }
}

For accounts upgraded in v2.0, the query structure through LCD is as follows: https://lcd.nyancat.irisnet.org/cosmos/auth/v1beta1/accounts/iaa1g4uak38a8fhkg5v5qky3fc9g6h50yrdcn7waug

{
     "account": {
         "@type": "/ethermint.types.v1.EthAccount",
         "base_account": {
             "address":"iaa1g4uak38a8fhkg5v5qky3fc9g6h50yrdcn7waug",
             "pub_key": {
                 "@type": "/ethermint.crypto.v1.ethsecp256k1.PubKey",
                 "key":"AhHKT0xpnrOmpikkd1lEPxiEHG4ngItq06KLhwU2UQHO"
             },
             "account_number": "5564",
             "sequence": "6"
         },
         "code_hash": "0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470"
     }
}

Using Proto

A new type needs to be registered, and the type structure is here: https://github.com/bianjieai/ethermint/blob/v0.20.0-irishub-1/proto/ethermint/types/v1/account.proto

When the query structure is /ethermint.types.v1.EthAccount, use the new structure analysis;

When the query structure is /cosmos.auth.v1beta1.BaseAccount, use the old structure analysis;

You can refer to the core-sdk-go written by the irisnet team. The relevant hash is at: https://github.com/irisnet/core-sdk-go/commit/68ed671727e057edb185935c42710f8777dab62f

Useing LCD

When parsing, please make compatibility according to the required type;

If the type is /cosmos.auth.v1beta1.BaseAccount, use the old structure analysis;

If the type is /ethermint.types.v1.EthAccount, use the new structure analysis;