The Privacy Problem Ring Signatures Solve
In a standard blockchain like Bitcoin, every transaction input references a specific previous transaction output. Any observer with blockchain access can follow the chain of inputs and outputs, tracing funds across multiple transactions and ultimately connecting them to known exchange addresses. Ring signatures make this analysis computationally infeasible by ensuring that any given transaction input could plausibly have originated from one of 16 possible sources.
How Ring Signatures Work
When you spend XMR, your transaction input is combined with 15 decoy inputs (called mixins) randomly selected from recent blockchain history. All 16 inputs are signed together using a cryptographic ring signature scheme. External observers can verify that one of the 16 signers authorised the transaction, but cannot determine which one. The actual sender is indistinguishable from the decoys. This is why Monero transactions cannot be traced even with full blockchain access.
Combined With Stealth Addresses and RingCT
Ring signatures address sender privacy. Stealth addresses ensure every payment creates a unique one-time on-chain address for the receiver, preventing linking multiple payments to the same recipient. RingCT (Ring Confidential Transactions) encrypts the transaction amounts using Pedersen commitments, making amounts invisible to observers while still allowing cryptographic verification that no XMR was created or destroyed. Together, these three mechanisms make Monero the most practically private cryptocurrency available. This is why TorZon prioritises XMR for all transactions. See our XMR guide for more.