Blockchains were never supposed to turn everyone or everything into an open book.
Yet for years, onchain payments have operated in a strangely transparent mode: salaries, vendor invoices, and treasury balances have been publicly visible by default. This wasn’t a choice; it was a limitation. The primitives required to do better simply didn’t exist.
Today, we are announcing the first-ever confidential payroll executed on Ethereum mainnet. This isn’t a “coming soon” teaser or a testnet demo. It’s live, in production, and it marks the moment onchain finance becomes viable for the real world.
Bron’s CFO recently paid team salaries on Ethereum mainnet, using confidential USDT, also referred to as cUSDT.
While the transactions are publicly verifiable, the amounts were encrypted end-to-end. Only the sender and each recipient know the exact figures. The blockchain enforced the settlement and the rules of the protocol without exposing sensitive financial data to the world.
While the execution is transparent, the payment amount is encrypted using Fully Homomorphic Encryption (FHE), and completely hidden on the ledger.
Serious organizations cannot move significant volume onto a public ledger where every competitor can scrape their compensation structures, vendor terms, or internal liquidity movements.
Confidentiality is not an optional feature; it is a prerequisite for corporate sovereignty. Real-world financial activity requires the ability to move capital without signaling your next move or exposing your internal logic to the entire market. Without private settlement, onchain finance remains a sandbox. To scale, we need the auditability of the blockchain paired with the privacy of the boardroom.
This payroll was made possible by confidential tokens, a new onchain primitive enabled by Zama.
This milestone was made possible using the Zama Protocol and a new primitive: the ERC-7984.
The ERC-7984 standard is a joint initiative between OpenZeppelin, Zama, Inco and others. These new confidential token standards allow balances and amounts to remain encrypted on the blockchain while preserving the composability that makes Ethereum so powerful.
The full specification is available here: https://docs.openzeppelin.com/confidential-contracts/token
Confidential USDT (cUSDT) is USDT implemented using this new standard. It behaves like a stablecoin should, except that financial privacy is enforced by default, rather than simulated through offchain abstractions or frontend tricks.
Bron is built for both individuals and teams, with a range of advanced features that support the unique requirements of these users, such as digital inheritance, hidden accounts, policy engines, batch payment processing and biometric signing. Supporting confidential tokens was the natural next step in Bron’s mission to provide the most secure, operationally rigorous MPC wallet in the ecosystem.
Today, Bron becomes the first wallet to support confidential tokens features natively.
This goes above confidential payroll. Once onchain payments become confidential by default, entire categories unlock. Corporate finance onchain, compliant stablecoin rails, onchain companies, and wages at scale.
Up to 8% of the $ZAMA token supply will be sold in a sealed-bid Dutch auction on Ethereum, using the Zama Protocol to keep bids private. This ensures fairness and true price discovery while preventing manipulation by bots.
To celebrate this partnership between Bron and Zama, Bron users will receive two incentives if they choose to participate in the Zama Public Auction.
Confidential payments are no longer theoretical. They are here, they are live, and payroll is just the beginning.
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