# Hierarchical Signatures

*Category: Phantom Secrets™.*

An extension of MPC/TSS that enforces real-world business logic in the cryptography itself. Instead of simple thresholds (e.g. 'any 2 of 3'), signatures can require specific roles or conditions (e.g. CFO + CEO + Compliance Officer for large transactions). These rules are cryptographically binding, preventing spoofing, insider abuse, or collusion. Lokblok refers to this as business-logic-enforced cryptography.

**Read more:** [/features/hierarchical-signatures](https://www.lokblok.co/features/hierarchical-signatures)

## Related terms in Phantom Secrets™

- [Phantomizing](https://www.lokblok.co/glossary/phantomizing)
- [Regen Tokens](https://www.lokblok.co/glossary/regen-tokens)
- [Ephemeral](https://www.lokblok.co/glossary/ephemeral)
- [Toughkey™](https://www.lokblok.co/glossary/toughkey)
- [Multi-Party Computation (MPC)](https://www.lokblok.co/glossary/multi-party-computation)
- [Threshold Secret Sharing (TSShr)](https://www.lokblok.co/glossary/threshold-secret-sharing)
- [Threshold Signature Scheme (TSSig)](https://www.lokblok.co/glossary/threshold-signature-scheme)
- [Business-Logic-Enforced Cryptography](https://www.lokblok.co/glossary/business-logic-enforced-cryptography)

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