> Aztec.nr API reference, v6.0.0 (mainnet and testnet). Index: https://docs.aztec.network/aztec-nr-api/v6.0.0/llms.txt

# Function compute_nullifier_existence_request

Module: `noir_aztec::nullifier::utils`

```rust
pub fn compute_nullifier_existence_request(
    unsiloed_nullifier: Field,
    contract_address: AztecAddress,
) -> NullifierExistenceRequest
```

Returns the [`NullifierExistenceRequest`](/aztec-nr-api/v6.0.0/noir_aztec/context/struct.NullifierExistenceRequest.md) used to prove a nullifier exists.