What Are Confidential Tokens?

Blockchain technology revolutionised transparency and auditability, but this same transparency creates challenges for financial privacy.

Every transaction, balance, and interaction is visible to anyone with a block explorer.

• For enterprises, this means competitors can track treasury movements and business relationships.

• For investment funds, it exposes trading strategies.

• For individuals, it reveals personal wealth and spending patterns to friends, family, and the public.

Confidential tokens (cToken) solve this by introducing encrypted balances while maintaining ERC-20-like functionality.

A confidential token is an encrypted version of a base token (e.g., USDC → cUSDC, ETH → cETH). Balances and amounts are stored using FHE-based encrypted integers, enabling operations to occur without revealing underlying values.

Confidential tokens enable users to leverage the transparency of DeFi while maintaining the financial confidentiality typically found in traditional systems.

On the left, a regular token balance is transparent, so anyone can see you have 1000 USDC. On the right, a confidential token balance is encrypted, so observers see only that you have cUSDC, not the actual amount.