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Foundations: Privacy

What Are Stealth Addresses?Stealth addresses solve a simple but stubborn problem: on a public blockchain, publishing one receiving address lets everyone map your incoming payments

What Are Stealth Addresses?Stealth addresses solve a simple but stubborn problem: on a public blockchain, publishing one receiving address lets everyone map your incoming payments. A stealth-address scheme keeps the convenience of a public payment identifier while making each payment land at a different one-time address that only the recipient can recognize and spend from.Mar 21, 202625 min read

What is Ring Signatures?Ring signatures solve a very specific problem: proving that *someone in a chosen set* authorized a message without revealing who it was

What is Ring Signatures?Ring signatures solve a very specific problem: proving that *someone in a chosen set* authorized a message without revealing who it was. That simple shift from identity to set membership is why they matter in privacy systems, from anonymous disclosures to private cryptocurrency transactions.Mar 21, 202626 min read

What Are Shielded Transactions?Shielded transactions solve a basic tension in blockchains: everyone needs to verify transfers, but not everyone should learn who paid whom and how much

What Are Shielded Transactions?Shielded transactions solve a basic tension in blockchains: everyone needs to verify transfers, but not everyone should learn who paid whom and how much. They do this by moving the public ledger from revealing transaction contents to verifying cryptographic commitments and zero-knowledge proofs instead.Mar 21, 202626 min read

What Are Privacy Coins?Privacy coins exist because ordinary blockchains reveal more than most people realize

What Are Privacy Coins?Privacy coins exist because ordinary blockchains reveal more than most people realize. They use cryptography to hide who paid whom and often how much, but the real story is not just secrecy — it is the attempt to preserve fungibility on a public ledger without giving up verifiability.Mar 21, 202624 min read

What is a View Key?View keys solve a very specific problem in private blockchains: how can a system hide transaction data from the public while still letting the intended recipient, or an authorized auditor, see what matters? They are the mechanism behind *selective disclosure*—privacy by default, with controlled visibility when the user chooses

What is a View Key?View keys solve a very specific problem in private blockchains: how can a system hide transaction data from the public while still letting the intended recipient, or an authorized auditor, see what matters? They are the mechanism behind *selective disclosure*—privacy by default, with controlled visibility when the user chooses.Mar 21, 202623 min read