AURA Core: Minimal Evidentiary Manifest Specification for Digital Assets

AURA Core defines a minimal, platform-independent evidentiary layer for digital assets. It provides a deterministic, cryptographic mechanism to establish and verify factual claims such as existence, integrity, attribution, and temporal assertions. Designed as a neutral and non-enforcing infrastructure, AURA Core enables independent verification without reliance on platforms or intermediaries. It is particularly relevant for auditability and provenance in AI systems, where dataset traceability, output validation, and reproducible verification are increasingly critical. This document presents the AURA Core specification as a foundational trust primitive for digital ecosystems.