External evidence architecture

Single-chain truth for critical infrastructure flows.

RGRA is an independent evidence architecture practice that stabilises the factual storyline behind high-risk operational flows – hydrogen, water, energy, cooling and contractor hand-offs. No platforms, no integrations, no dashboards.

Written-only engagements Zero integration, zero data access Audit-grade, replayable chains

Problem space

Complex programmes rarely fail at engineering. They fail at evidence.

As projects scale, the evidentiary line behind decisions fragments across ministries, regulators, utilities, EPCs, OEMs, PMOs and advisors. Logs, emails and reports stop telling one coherent story.

Typical pain signals before RGRA is engaged:

  • Incident reviews where no one can replay a clean, time-anchored chain of events.
  • Disputes, penalties and claims resting on screenshots and conflicting logs.
  • Board and regulator questions answered with narratives rather than evidence.
  • Contractor-heavy flows where responsibility lines shift after the fact.

What changes with an evidence architecture layer:

  • One engineered chain per high-risk flow: event → responsibility → proof → daily lock → replay.
  • Hard / soft / narrative evidence separated, weighted and treated explicitly.
  • Every day becomes provable, tamper-resistant and replayable on demand.
  • Audit, assurance and governance conversations move from opinion to traceable fact.

Written-only model

Quiet, written engagements. No calls, no workshops, no platforms.

The work is designed to minimise disruption. We do not replace systems or vendors. We add a neutral, written-only layer that defines how truth flows between them.

Operating mode

Evidence architecture, not software.

  • No integration, no data extraction, no new dashboards.
  • Structured written exchanges with a single coordination counterpart.
  • Reconstruction and blueprint work done on RGRA side, using inputs you choose.
  • Outputs returned as signed, audit-ready blueprints your teams can operate.

Engagement entry

One high-risk flow at a time.

Most clients begin with a 3–day written reconstruction of a single real workflow, followed by a 30–90 day pilot if the method proves its value in live conditions.

Details on Start and Pilots pages.