The concept of public blockchains changed digital payments by making transactions transparent and verifiable by anyone. Every transfer made can be independently read and confirmed, giving users confidence that funds have moved exactly as intended.
However, that same transparency creates a challenge for businesses building crypto products. Every transaction they make leaves a permanent record that can expose balances, payment history, relationships, and user activity to anyone with a blockchain explorer. This challenge has created a bigger issue where products now strive to protect what becomes visible outside their interface.
To help address this, crypto infrastructure providers have introduced private transfer capabilities that reduce unnecessary on-chain exposure without changing how public blockchains operate. One example is ChangeNOW, through its Private Transfers API, which allows routing transfers through a temporary deposit address and separate operational hot wallet to break the direct on-chain link between sender and recipient.
To understand why this matters, we first examine how public blockchains operate.
How Public Blockchains Work
