A public ledger is a bad place for a private life.

Your stablecoin activity should not become a public record. Fiber uses zero-knowledge proofs to protect financial activity, such as trades or transfers.

Open your Fiber account
PRIVATE ACTIVITY / PROOF FLOWACTIVE
01Supported activityProtected
02Zero-knowledge proofVerified
03Financial detailsPrivate
ZKproof-based privacy
Privatesupported activity
Yoursnon-custodial control

What a public wallet can reveal.

Public blockchains can expose balances, transaction amounts, timing, the wallets you interact with, and the history connected to an address. Your legal name may not appear onchain, but public and offchain data can still connect that activity to people and businesses.

Verification stays. The public receipt does not.

Fiber uses zero-knowledge proofs to show that supported activity follows the network's rules without publishing the private information used to create the proof. The action can be verified without making its underlying financial details public.

  1. Create the action.

    Initiate a supported transfer, trade, or reward action through Fiber.

  2. Prove it is valid.

    Fiber handles the zero-knowledge proof and privacy machinery inside the wallet.

  3. Verify without revealing.

    The network verifies the proof without requiring the private financial inputs to be published.

Privacy follows supported activity.

Fiber's privacy layer protects supported financial activity throughout the wallet experience.

  1. Private transfers

    Send supported assets without publishing the underlying financial details.

  2. Private trading

    Trade supported assets through Fiber's protected flow.

  3. Private reward accrual

    Grow eligible balances without turning supported reward accrual into a public financial history.

Built on Railgun. Adapted for Fiber.

Fiber's privacy infrastructure is built on a fork of Railgun's open-source protocol. Rather than designing a new privacy system from scratch, Fiber builds on Railgun's zero-knowledge architecture and adapts it for supported transfers, trades, and reward accrual inside the Fiber wallet.

The cryptography stays in the background. Fiber handles the proof generation and privacy flow so privacy does not become a separate mode or workflow.

Where privacy begins and ends.

Fiber protects supported activity inside its private flow. Moving funds into or out of that flow can create events visible to a public blockchain or integrated provider. Banking, card, exchange, and other third-party services follow their own visibility and data practices.

  1. Protected by Fiber

    Supported transfers, trades, and reward accrual inside Fiber's private flow.

  2. Separate visibility applies

    Public blockchain entry and exit activity, integrated third-party services, and unsupported assets or actions.

Private and non-custodial.

Fiber provides the interface and privacy layer, but does not hold, custody, control, or gain access to your funds. Privacy limits what outside observers can learn. Fiber's non-custodial model means Fiber does not take custody or control of your funds.

Privacy applies to supported Fiber activity. Public blockchains and integrated third-party services retain their own visibility and data practices.

Why blockchain privacy matters.Learn what public blockchains can reveal, why financial privacy matters onchain, and how privacy changes what gets published.READ EXPLAINERPrivate stablecoin walletsREAD THE GUIDE

Your money does not need a public changelog.