Cryptography & Merkle-DAG Architecture

Modern laboratory assurance requires mathematical certainty. TARE achieves this by replacing traditional relational history tables with a cryptographically verifiable Merkle Directed Acyclic Graph (DAG).

Universal UUID Namespace

Every core data entity in TARE (such as inventory_locations, samples, and users) has been standardized to use native PostgreSQL uuid identifiers.

This absolute dimensional constraint guarantees that node collisions are statistically impossible across the entire platform. Consequently, a Sample Tube generated on a disconnected edge device can be asynchronously synced into the primary graph without risking ID overlap.

Multi-Parent Hash Arrays

Scientific workflows are often convergent (e.g. pooling multiple aliquots into a single synthesis). To accurately represent this reality, ProvenanceEdge relationships accept an array of parentHashes. By hashing the payload alongside all ancestor signatures, TARE natively weaves a resilient web of evidence that instantly invalidates if any historical node is tampered with.