Contract interface

Contract IDs:

Nebula VRF exposes these functions:

• commit(user: Address, commitment: BytesN<32>, pubkey: BytesN<96>)
• reveal(user: Address, seed: Bytes, salt: Bytes, signature: BytesN<192>) -> BytesN<32>
• derive_random(randomness: BytesN<32>, context: Bytes) -> u64
• get_commitment(user) -> Option<BytesN<32>>
• get_pubkey(user) -> Option<BytesN<96>>

Auth model

• commit requires user.require_auth() (the user signs the transaction)
• reveal is permissionless; verification is cryptographic