The map of deeper and more exact materials. Most readers do not need to start with the full spec — this page tells you which document to read next based on what you care about.
Core references on this site
The three definitive long-form documents, all hosted here:
Blue Language Specification — the exact normative semantics of the language and the processing model. Use this when you need to know precisely how something behaves.
Technical white paper: Timelines — why ordering, completeness, and identity attribution work the way they do, and what trust assumptions follow.
PayNote reference — the standard contract for governing one transaction: lifecycle, participants, requests, responses, control locks, and worked examples.
Companion concept pages
Compact, hand-written explanations for each topic. Read these first if you want intuition before going to the spec.