Core Technology
Spec-DNA Cryptographic Lineage
How deterministic SHA-256 fingerprinting creates an unforgeable chain of custody from tender contract clauses to vendor submittals.
The Spec-DNA Formula
Every requirement in STRAND receives a 16-character deterministic SHA-256 hash upon ingestion. It serves as the primary key across the entire Project Knowledge Graph (PKG).
Spec_DNA = SHA256(JSON.stringify({ param, section, source, value })).substring(0, 16)
The 4-Hop Cryptographic Chain
1. Contract Clause (Doc §)spec_tia942.pdf §6.7.1
↓ DERIVES_FROM
2. Bill of Quantities (BOQ)Line Item #402: Cooling Tower
↓ DERIVES_FROM
3. Purchase Order (PO)PO-88301 Carrier Enterprise
↓ AUDITED_AGAINST
4. Vendor Submittal Cut-Sheet45°C (Spec: 50°C → VIOLATION)
Try It in Real-Time
Spec-DNA Fingerprint Generator
Computed Spec-DNA ID
CALCULATING...