sanction/

x/sanction

Abstract

This document specifies the sanction module of mantrachain.

The sanction module is to blacklist accounts preventing them from doing any transactions on the chain.

Contents

• AnteHandler
• State
• Messages

AnteHandler

The custom AnteHandler checks if the signer of a transaction is blacklisted. If the signer is blacklisted, the transaction is rejected.

State

The x/sanction module keeps state of the following primary objects:

1. Blacklist Accounts

In addition, the x/sanction module keeps a set of accounts to manage the aforementioned state:

• Denomination Multipliers: 0x1 | byte(account)

Messages

MsgAddBlacklistAccount

Add a blacklist account.

https://github.com/MANTRA-Chain/mantrachain/tree/main/proto/mantrachain/sanction/v1/tx.proto#L24-L30

The message handling can fail if:

• signer is not the authority module address, usually it is the gov module account address.
• blacklist account is not an account in Bech32 string.

MsgRemoveBlacklistAccount

Remove a blacklist account.

https://github.com/MANTRA-Chain/mantrachain/tree/main/proto/mantrachain/sanction/v1/tx.proto#L35-L41

The message handling can fail if:

• signer is not the authority module address, usually it is the gov module account address.
• blacklist account is not an account in Bech32 string.