Shielded Pool

In Zcash, the collective pool of shielded (private) UTXOs. Users deposit ZEC transparently → shield → transact privately within pool → withdraw transparently. Anonymity depends on pool size and transaction diversity — larger, more active pools provide stronger privacy. Historical Zcash shielded pool was smaller than Monero's per-transaction anonymity set; has grown substantially through 2023-2025.