zk.money has resumed service after a three-year absence, offering Ethereum users a wallet that conceals payments on Aztec while leaving the initial deposits publicly visible, according to CoinDesk.

The distinction defines the scope of the service described in the report: privacy applies to payments within the Aztec environment, rather than to every stage of moving funds. The deposit that precedes those payments remains part of the visible record.

CoinDesk’s reporting identifies the return of the wallet and that boundary between public funding and private payments. The supplied account does not establish fees, supported assets, withdrawal arrangements or restrictions on access. It also does not explain why the service was absent or what prompted its return.

Ethereum is a blockchain: a shared record of transactions maintained by a network of computers. On its public ledger, transactions generally expose information such as the sending and receiving addresses and the value transferred. An address is an identifier, not necessarily a person’s name, but its activity can be examined over time.

This is the difference between pseudonymity and privacy. A person can transact through an address without publishing their name, while still leaving a readable financial trail. If an address becomes associated with a known person or organisation, that connection can give observers a starting point for examining other activity involving it.

Privacy systems change which transaction details observers can inspect. Their protections depend on the particular system and on which parts of a transaction take place inside it.

What payment privacy covers

Aztec is an Ethereum-focused network built around privacy and zero-knowledge cryptography. In general, a zero-knowledge proof lets one party demonstrate that a statement is valid without revealing all the underlying information used to establish it. In blockchain applications, that can allow transaction rules to be checked while keeping selected financial details confidential.

The technology does not mean that all information surrounding a payment disappears. A system can conceal activity within its private environment while retaining public records at the points where money enters or leaves. Which details remain exposed is a matter of implementation, not something that can be determined from the word “private” alone.

For zk.money’s return, the confirmed boundary is the deposit: CoinDesk reports that deposits remain visible even though payments on Aztec can be hidden. A public deposit record and a confidential subsequent payment are therefore compatible features of the same service.

A wallet, meanwhile, is software through which users manage credentials and authorise transactions. It is distinct from the network that processes those transactions. Calling zk.money a privacy wallet describes its role as an access tool; it does not, by itself, establish how keys are held, how funds can be recovered or which information the operator receives.

What to watch

Further documentation could clarify exactly which payment details are concealed, what becomes visible during withdrawals and how users access their funds. Fees, asset support and any independent security assessments are also details to check; none is established by the supplied account of the relaunch.