What is a Ring Signature?

A Ring Signature is a cryptographic method that lets a user sign a transaction anonymously within a group—so that no one can tell who actually signed it.

It’s like putting your signature in a pile with others: the transaction is proven valid, but the real signer stays hidden.

Key Features

  • Sender Anonymity — The actual sender is mixed into a group of decoy signers—all equally likely to be the origin.
  • Unlinkable Transactions — Transactions cannot be traced to a specific wallet, even with blockchain analysis.
  • No Coordination Needed — The sender doesn’t need permission from the other group members—their public keys are used anonymously.
  • Double-Spend Protection — With One-Time Linkable Ring Signatures (used in Xcoin), the network can still detect duplicate transactions without knowing who sent them.

How It Works (Simplified)

  1. The sender creates a group (a “ring”) of possible signers, including themselves and others’ public keys.
  2. They generate a ring signature that proves one of the group signed the transaction—but not which one.
  3. The network verifies the signature without ever knowing the sender’s identity.

In Xcoin, every transaction uses One-Time Linkable Ring Signatures by default.

That means: no sender, no traces, no leaks—ever.

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