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

# Trait Hash

Module: `protocol_types::traits`

```rust
pub trait Hash {
    // Required methods
    pub fn hash(self) -> Field;
}
```

## Required methods

```rust
pub fn hash(self) -> Field
```

## Implementors

```rust
impl Hash for AppPayload
```

```rust
impl Hash for BlockHeader
```

```rust
impl Hash for CheckpointHeader
```

```rust
impl Hash for ContractClassFunctionLeafPreimage
```

```rust
impl Hash for ContractInstance
```

```rust
impl<let INITIAL_DELAY: u64, T> Hash for DelayedPublicMutableValues<T, INITIAL_DELAY>
where
    T: Packable
```

```rust
impl Hash for IvpkM
```

```rust
impl Hash for NullifierLeafPreimage
```

```rust
impl Hash for PrivateToPublicKernelCircuitPublicInputs
```

```rust
impl Hash for PrivateToRollupKernelCircuitPublicInputs
```

```rust
impl Hash for PublicDataTreeLeafPreimage
```