GoMining central cashback processing service for Cards and Travel products. Calculates cashback in TH/s (mining power) based on spending events, asset type, and pricing. Covers Card cashback rates by VIP level (0.5%-5%), Travel cashback rates by VIP level (1%-4%), TH/s conversion formula, miner selection rules, daily accrual for cards, booking-based accrual for travel, miner eligibility restrictions, and 5000 TH max accumulation per miner.
