Privacy Coin
A privacy coin is a cryptocurrency built to hide some or all transaction details, such as who sent funds, who received them and how much, from the public. Monero and Zcash are the best-known examples.
Why ordinary blockchains are not private
On Bitcoin or Ethereum every transaction is public forever. Addresses are not names, but once one address is linked to a person, for example through an exchange withdrawal, anyone can trace where that money came from and where it went. Blockchain analytics firms do exactly this. That makes these networks pseudonymous, not anonymous.
Privacy coins try to close that gap so that the ledger still proves no coins were created out of thin air, without revealing the details to everyone.
How the main designs work
Monero hides data by default. Ring signatures mix your input with decoy inputs so an observer cannot tell which one was really spent, stealth addresses create a fresh one-time address for each payment, and confidential transactions hide amounts.
Zcash uses zero-knowledge proofs (zk-SNARKs) to prove a transaction is valid without showing its contents. Its privacy is optional: Zcash supports both transparent addresses that work like Bitcoin and shielded addresses that hide sender, receiver and amount.
Why it matters
Financial privacy protects ordinary people: a salary paid in a transparent coin reveals your income to anyone who knows your address, and a visible balance can make you a target. Businesses also need to keep suppliers and margins confidential. At the same time, strong privacy makes it harder for authorities to follow criminal money, which is why the topic is politically sensitive.
Trade-offs and risks
Because of anti-money-laundering rules, several exchanges have delisted privacy coins in some countries, and the EU anti-money-laundering regulation adopted in 2024 restricts regulated providers from handling anonymity-enhancing coins. That can mean fewer places to buy, sell or cash out.
Privacy is also only as strong as its weakest step. Buying through an exchange that knows your identity, reusing addresses, or moving coins between transparent and private pools in obvious amounts can reveal more than people expect. Optional privacy tends to be weaker in practice, because few users choose it, which makes the private set smaller.
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Frequently asked questions
Are privacy coins illegal?
Holding them is legal in most countries, but rules differ and some regulators restrict how exchanges and other providers may offer them. Check the rules where you live.
Is Bitcoin a privacy coin?
No. Bitcoin is pseudonymous: amounts and addresses are public, and transactions can often be linked to real people with analysis.
What is the difference between Monero and Zcash?
Monero makes every transaction private by default using ring signatures and stealth addresses. Zcash uses zero-knowledge proofs and lets users choose between transparent and shielded transactions.
Related terms
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