zero-knowledge
Articles with this tag
by Max
December 4 2025
Proving You Belong Without Saying Who You Are
Zero-knowledge proofs let Nostr users prove they're trusted without revealing their identity, enabling anonymous rate-limiting and reputation-gated relay access.
by Max
November 19 2025
The Gossip Vulnerability: Why NIP-17's "Deniable" Messages Aren't
NIP-17 promises deniable messaging with its three-layer design: an unsigned "rumor," a signed "seal," and an ephemeral "gift wrap." However, this setup has a hidden vulnerability. The signed seal allows recipients to prove that a message was sent by the claimed author, even without revealing the content. This creates a perfect scenario for gossip attacks, where the mere proof of communication can damage reputations. As we explore NIP-17, we find that the rumor, despite being unsigned, is not as deniable as it seems, making it a potential risk for exposure.
by Max
March 31 2026
Every Crowd Hides You Differently
From Bitcoin CoinJoin to zero-knowledge proofs, every serious approach to financial privacy bets on a different crowd to disappear into.
by Max
April 21 2026
The Key Inside the Ciphertext: A Full Introduction to PIPEs v2
PIPEs v2 turns spend conditions into key-recovery conditions, letting Bitcoin enforce proof-gated authorization through ordinary Schnorr signatures and extraordinary off-chain cryptography.
by Max
November 28 2025
Private Relay Connections: Zero-Knowledge Solutions for Nostr
Nostr relays see everything - who connects, what they fetch, how often they post. Zero-knowledge cryptography can fix all three problems: Semaphore-based authentication hides which whitelisted user is connecting, private information retrieval hides which notes you're fetching, and Privacy Pass enables rate limiting without identity linkage.