u/Dilslino

We live in a world where every payment becomes permanent data that anyone can read. Salaries, subscriptions, donations, and even payments to suppliers are all clearly visible. Businesses lose the confidentiality of their pricing and supply chains, and individuals lose a safe space from tracking and targeting.

The roots of private payments turn out to be much older than Bitcoin. It all began in the pre-crypto era, from the 1980s to the 1990s.

David Chaum wrote a paper on blind signatures (1983) that laid the foundation for anonymous money. The idea: banks sign coins without seeing their contents, so they cannot match who withdraws the money with who spends it.

Bitcoin is only pseudonymous, not anonymous. All transactions are public, and over time, on-chain analysis makes it easy to link addresses to real-world identities.

This is where the need for additional privacy measures arises: mixers, CoinJoin, and zero-knowledge proofs.

The goal is simple: to ensure payments remain verifiable without revealing who is paying or how much.

Privacy isn’t about hiding something wrong. Privacy protects value and competitive advantage.

Zakura published a post on making transparent addresses less leaky.

A t1… address only holds a hash of your public key, which is revealed when you spend. Rotating to a fresh address for every transaction keeps your remaining funds behind hashes that were never exposed, a useful safeguard if public-key recovery ever becomes practical.

The catch: when your wallet looks up those addresses, the server learns they all belong to you. Zakura’s fix is Private Information Retrieval (PIR), which lets the wallet fetch its history without revealing which addresses it’s checking.

Transparent PIR is coming to Vizor this week, and post-quantum signature opcodes are planned for January.

Shielded remains the best, but Transparent is now far neater when it comes to protecting privacy.