# Getting Started Before diving into the technical details, let's understand how dVRF works and how to subscribe to consume random numbers. ### Subscription Model Think of it like a prepaid phone plan, but for random numbers. You deposit funds upfront, and Supra uses them to pay gas fees for your VRF callbacks.
* **Predictable costs**: Set gas limits upfront, no surprises * **Simplified contracts**: Your VRF consumer contracts don't need to handle payments * **Bulk management**: One subscription can serve multiple contracts * **Reliability**: Reserved minimum balance ensures your requests don't fail due to insufficient funds ### How dVRF works? Understanding the complete dVRF process flow will help you integrate more effectively:

**Why use subscriptions?** * You create a subscription with your wallet address as the manager * Deposit funds into your subscription account * Register (whitelist) your smart contracts under this subscription * When your contracts request random numbers, Supra automatically pays the callback gas fees from your subscription balance * No need to handle gas payments in your contract code - it's all automated!
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