Blinded Commitments

Blinded commitments are cryptographic tools that allow a user to commit to a specific value, such as a transaction amount, without revealing that value to others. The commitment is a digital hash that binds the user to the value, which can be opened later to prove the original amount was correct.

This is widely used in privacy-focused protocols to ensure that ledger balances are correct without disclosing the actual account balances. It is a fundamental building block for zero-knowledge proofs, enabling complex financial logic to be verified on-chain while keeping the data hidden.

By using these commitments, protocols can perform accounting, settlement, and verification in a way that respects user confidentiality. It effectively masks the sensitive inputs of a financial system while maintaining the integrity of the output.