Will Bitcoin become the benchmark "on-chain audit coin" in the era of data sovereignty? As data ownership and transparency gain prominence, Bitcoin’s decentralized, immutable ledger offers unparalleled auditability. Its blockchain ensures verifiable, tamper-proof records, making it a strong candidate for a standard asset in on-chain auditing. With no central authority, Bitcoin provides trustless data integrity, critical for applications requiring robust verification, like supply chain tracking or financial reporting. However, challenges like scalability, transaction costs, and energy consumption could hinder its adoption as the default audit coin. While competitors like Ethereum offer smart contract flexibility, Bitcoin’s simplicity and security remain unmatched. Its fixed supply and global acceptance further solidify its potential as a benchmark asset. In a data-driven future, Bitcoin could anchor trust in decentralized systems,