A deep dive into Content Identifiers, the self-describing cryptographic fingerprints that form the foundation of ATProtocol’s data model.
CIDs: What You Need to Know and Why, Part 2 - Nick's Blog
How ATProtocol uses Content Identifiers to create a versioned, verifiable, and portable data model.
ATProtocol Attestations: Cryptographic Signatures for the Decentralized Web - Nick's Blog
This post introduces the formal ATProtocol attestation specification, a framework for adding cryptographic signatures to ATProto records through two complementary patterns: inline attestations that embed signatures directly in records, and remote attestations that store proof in separate repository records. The specification prevents replay attacks through repository binding, uses CID-based content addressing for integrity, and provides the cryptographic foundation for verified credentials, trusted content, and authenticated interactions in the decentralized ATProtocol ecosystem.
ATProto Architecture
Visual summary of the AT Protocol architecture: PDS, AppView, identity, records, lexicons.
attested.network — Proof of Payment for ATProtocol
An open specification for decentralized, cryptographically verifiable proof of payments.
GrandPerspective — PDS edition
See where an atproto repository's bytes actually go, and act on what you find.
AT://links (by Patrick Singletary) — Semble
collection of fun / useful apps built to work on / with ATProtocol
Lexicon Garden - ATProtocol Lexicon Browser
Browse and discover ATProtocol lexicon schema definitions
Permissioned Data Diary 1: To Encrypt or Not to Encrypt - Daniel's Leaflets
The first in a series of posts about major design decisions along the way to a permissioned data protocol for atproto.
ATmentions
Webmentions for the ATmosphere — a tiny open-source widget that shows how the atproto network reacted to any page, with no accounts and no lock-in.
badge.blue — CID-First Attestation Specification
Specification for CID-first attestations on AT Protocol records. Inline and remote cryptographic signatures with replay-attack prevention.
Welcome to the new atproto.com - AT Protocol
We've updated just about everything about atproto.com to make it easier for developers to just build things.
