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

# Function create_block_end_marker

Module: `noir_aztec::protocol::blob_data`

```rust
pub fn create_block_end_marker(global_variables: GlobalVariables, num_txs: u16) -> Field
```

Create the field that marks the end of a block. It's a concatenation of: `BLOCK_END_PREFIX` | `timestamp` | `block_number` | `num_txs`

`BLOCK_END_PREFIX` occupies the bytes up to the point where `timestamp` begins. `timestamp` occupies 8 bytes. `block_number` occupies 4 bytes. `num_txs` occupies 2 bytes.