What is Shielded Address?
Crypto Glossary Definition
A kind of address used by ZCash that is highly private. They are not visible in the blockchain and offer strong privacy against transaction graph analysis. The value transferred is private if both the sender and receiver are shielded. Shielded addresses are not supported in every ZCash wallet.
Why Shielded Address Matters
Zcash's shielded addresses use zero-knowledge proofs (zk-SNARKs) to let the network verify a transaction is valid — sufficient funds, no double-spend — without revealing the sender, receiver, or amount on the public blockchain. In practice, shielded-to-shielded transactions have historically made up a minority of Zcash's total volume, since not every wallet or exchange supports them.
Shielded Address in Practice
A Zcash user paying a contractor for freelance work wants the payment amount and both parties' addresses to remain completely invisible to anyone browsing the public blockchain, so instead of using a regular transparent Zcash address, they generate a shielded address for the transaction. When the payment is sent between two shielded addresses, the network uses zero-knowledge proofs, specifically zk-SNARKs, to mathematically confirm that the sender actually has sufficient funds and isn't attempting to double-spend, all without revealing the sender's identity, the receiver's identity, or the amount transferred anywhere on the public ledger. This stands in sharp contrast to a transparent Zcash transaction, or to Bitcoin generally, where anyone can trace a wallet's entire transaction history using a block explorer. Suppose the contractor mentions they can't receive the payment because their exchange wallet only supports transparent addresses, illustrating a real limitation of shielded transactions: not every wallet or exchange has implemented support for them, so a meaningful share of total Zcash volume historically still moves through transparent addresses, sometimes passing through a shielded address only briefly in the middle of a transaction to gain partial privacy rather than using shielded-to-shielded transfers exclusively.
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