Public blockchains make every transaction visible, but that transparency often comes at the expense of user privacy. This week, speakers from Moody’s Ratings and crypto service ChangeNOW said the industry doesn't have to choose between the two. Their proposed fix: a hybrid blockchain architecture paired with granular, address-level monitoring.
The privacy-transparency trade-off
Bitcoin and Ethereum were built to be open ledgers. Anyone can trace a transaction from start to finish. That's great for auditability but terrible for someone who wants to keep their financial activity private. Regulators want visibility; users want confidentiality. The tension has fueled everything from privacy coin crackdowns to the rise of mixers — which regulators then target.
What Moody's and ChangeNOW are saying
During a panel discussion, representatives from Moody’s Ratings and ChangeNOW argued that the two goals aren't mutually exclusive. They pointed to hybrid blockchain architecture — systems that blend public and permissioned elements — as a way to keep transactions verifiable without broadcasting every detail to the world. Address-level monitoring, they said, lets watchdogs or compliance teams zero in on suspicious activity while leaving ordinary users alone.
How hybrid architecture works in practice
A hybrid chain might log a transaction's existence on a public ledger but encrypt the sender, receiver, or amount. Only parties with the right keys — or a designated monitor — can see the full picture. That structure gives regulators a window when needed, without turning the whole chain into a glass house. ChangeNOW's speaker noted that the approach is already being tested in some cross-chain settlement layers.
Address-level monitoring: a scalpel, not a sledgehammer
The second piece of the proposal is monitoring that tracks specific addresses rather than scanning all activity. If a flagged wallet moves funds, the system alerts compliance teams. But a regular user sending rent money to their landlord never triggers a review. The Moody’s representative stressed that this targeted approach could satisfy anti-money laundering rules without forcing every transaction onto a public watchlist.
The two speakers didn't name specific projects or timelines. But the fact that a major ratings agency and a real-world crypto service are publicly endorsing the model suggests the idea is moving beyond academic white papers. Whether regulators will accept hybrid chains as compliant — or demand full transparency — is the open question. For now, the industry has a proposal on the table that tries to have it both ways.
