Definition
A Web of Trust is a decentralized model for establishing trust and authenticity without a central authority. Rather than relying on a single certificate authority or platform to vouch for identities, trust propagates through a graph: you trust the people you know, you partially trust the people they trust, and reputation emerges from these overlapping endorsements. The concept originated with PGP key signing in the early 1990s and has found new relevance in decentralized networks like Nostr.
Web of Trust on decentralized networks
On a network with no gatekeeper, anyone can create an identity, so spam and impersonation are real risks. A web of trust addresses this by ranking and filtering based on social distance: notes from keys followed by people you already follow are surfaced, while keys with no connection to your trust graph are de-prioritized. This gives you a Sybil-resistant signal that you control, rather than an opaque algorithm chosen by a platform.
Why it matters for sovereignty
A web of trust keeps the decision of whom to trust in the hands of the user. It scales reputation without a central registry that could be captured, censored, or monetized — the same anti-gatekeeper principle that underpins Bitcoin and self-hosted infrastructure.
Explore related self-hosted, trust-minimized tooling in D-Central's sovereign self-hosting catalog.
In Simple Terms
A Web of Trust is a decentralized model for establishing trust and authenticity without a central authority. Rather than relying on a single certificate authority…