Fee

The x/fee module is a core component of the Sunrise blockchain responsible for managing transaction fees. It introduces mechanisms for burning a portion of $RISE tokens used as fees, and enforcing fee denominations. This module supports deflationary tokenomics while maintaining an efficient fee system.

Key Features of x/fee

1. Burn Mechanism:

   • A portion of $RISE tokens used as transaction fees is burned to reduce the circulating supply.

   • The burn ratio is determined by the burn_ratio parameter (default: 50%).

   • Burn operations are atomic and verified on-chain.

2. Fee Denomination (fee_denom):

   • Specifies the denomination required for transaction fees (default: "urise").

   • Transactions must pay fees in this denomination unless bypassed.

   • Strict validation of fee denominations is enforced.

3. Dynamic Parameter Configuration:

   • Developers can configure parameters dynamically with validation enforced by the module.

   • Parameters can be updated through governance proposals.

Core Functionality

Fee Collection and Processing

Fee Collection Process:

1. Fees are collected through the FeeCollector module account

2. The system validates:

   • Only one fee denomination per transaction

   • Fee denomination matches configured fee_denom

   • Fee amount is valid and non-zero

Fee Processing Flow:

1. Validate fees against configured parameters

2. Calculate burn amount based on burn_ratio

3. Execute burn operation for the calculated amount

4. Transfer remaining fees to fee collector

Parameter Configuration

Note: The following section covers advanced topics intended for experienced users or developers.

Parameter	Description	Default Value	Constraints
fee_denom	Required denomination for transaction fees	"urise"	Must be a valid denomination
burn_ratio	Percentage of fees to burn	0.5	Must be between 0 and 1

Workflow: Fee Processing

Note: The following section covers advanced topics intended for experienced users or developers.

For more details and implementation specifics, see the GitHub repository.