# Identifiers

This chapter defines how to compute unique identifiers.

- [Asset ID](./asset.md)
- [Blob ID](./blob-id.md)
- [Contract ID](./contract-id.md)
- [Predicate ID](./predicate-id.md)
- [Transaction ID](./transaction-id.md)
- [UTXO ID](./utxo-id.md)
  - [Coin ID](./utxo-id.md#coin-id)
  - [Message ID](./utxo-id.md#message-id)
    - [Message Nonce](./utxo-id.md#message-nonce)
  - [Fee ID](./utxo-id.md#fee-id)
