> For the complete documentation index, see [llms.txt](https://docs.fairway.global/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fairway.global/developers/build-on-cardano/merkle-compliance-utxo/glossary.md).

# Glossary

* **Compliance UTXO** → anchors Merkle root, epoch, sig, midnight ref.
* **KYC Verified At** → timestamp of when user last completed KYC.
* **Sanctions Epoch** → counter incremented when lists/risk change.
* **Leaf** → user-level proof data (address, claims, timestamp).
* **Policy Engine** → Aiken validator library for YES/NO eligibility.