> ## Documentation Index
> Fetch the complete documentation index at: https://cofhe-docs.fhenix.zone/llms.txt
> Use this file to discover all available pages before exploring further.

# CTRegistry

> Registry contract that manages the mapping between temporary ciphertext hashes and their actual hash values, ensuring secure lookup and verification

| Aspect               | Description                                                                                                                                                                                                                                                      |
| -------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Type**             | Registry Contract                                                                                                                                                                                                                                                |
| **Function**         | Manages the mapping between temporary ciphertext hashes and their actual hash values                                                                                                                                                                             |
| **Responsibilities** | • Maintains a consistent record of ciphertext identifiers throughout the CoFHE lifecycle<br />• Enables secure lookup of final ciphertexts using their temporary handles<br />• Restricts read/write access to ensure integrity and prevent unauthorized updates |

The CTRegistry acts as a source of truth for encrypted data identifiers, mapping temporary hashes to their final computed values. This ensures results from off-chain computation can be securely resolved and verified by their originating requests.