HOLDFAST
Mission-message continuity for degraded tactical networks — with internal Core, Adapt and Sentry layers.
HOLDFAST is a resilient mission-message continuity layer designed to preserve critical command, telemetry, custody and mission-evidence traffic over degraded bearers, mesh networks, relays and intermittent links.
HOLDFAST does not replace radios, waveforms, SDRs, encryption layers, mesh bearers or autonomy systems. It works above or alongside them to help decide whether critical messages should be sent, held, retried, forwarded, prioritised, preserved or flagged as ambiguous.
Not “what route exists?” but “what should happen to this message?”
HOLDFAST is not asking only what route exists. It is asking: given the current degraded network and mission state, what should happen to this message? Should it be sent now, held, retried, forwarded over a different bearer, prioritised, preserved as evidence, or flagged as ambiguous?
Transport
Routing moves packets.
Security
Cryptography verifies authenticity.
Resolvix
Is this message still fresh, custody-consistent, context-valid and safe to trust?
Core. Adapt. Sentry.
Continuity
HOLDFAST Core
Custody, priority, store-forward behaviour and mission-message continuity. Establishes the baseline that critical command, telemetry and mission-evidence traffic is preserved across partition, delay, retransmission and relay change.
Bounded adaptation
HOLDFAST Adapt
Evidence-confirmed degraded-bearer adaptation when degradation persists long enough for bounded adaptation to help. Adapts to schedulable or persistent communications pressure; deliberately conservative under transient noise.
Receiver-visible uncertainty
HOLDFAST Sentry
Receiver-visible severity, uncertainty and evidence-quality estimation when communications evidence becomes ambiguous. Does not classify jammers, predict adversary behaviour or control RF systems — it estimates what the receiver can actually tell about the degraded state.
What HOLDFAST provides.
Capability
Mission-message freshness evidence
Capability
Sequence and continuity tracking
Capability
Delay and latency awareness
Capability
Partition and rejoin behaviour
Capability
Custody and relay-path context
Capability
Priority and store-forward governance
Capability
Receiver-visible severity estimation
Capability
Communications-evidence uncertainty scoring
Capability
Continuity evidence published to AURM-NET
What HOLDFAST does. What it does not.
What we do
- Preserve mission-message continuity
- Govern priority and store-forward behaviour
- Track custody and relay-path context
- Estimate receiver-visible severity and uncertainty
- Adapt cautiously when degradation persists
- Publish continuity evidence for AURM-NET to consume
What we do not do
- Replace radios, waveforms, SDRs or modems
- Replace mesh routing or SATCOM bearers
- Control RF systems or transmit power
- Classify real jammers or attribute adversary behaviour
- Claim anti-jam or anti-spoof validation before hardware evidence exists
HOLDFAST keeps the message alive. AURM decides whether it should be trusted.
HOLDFAST and Sentry produce continuity and uncertainty evidence under degraded network conditions. AURM-NET consumes that evidence alongside PNT, video, telemetry, custody and autonomy-state signals to determine whether a delivered message and the broader mission state should still be trusted.
Simulation-backed. Hardware validation next.
Current state
Simulation-backed architectural prototype.
Next gate
M1 — live RF/GNSS ingestion, SDR or radio-adjacent evidence, hardware-in-the-loop replay, constrained-node performance, and partner-informed validation.
Not yet claimed
Field validation, RF validation, GNSS anti-spoof validation, anti-jam validation, SDR validation, waveform validation, operational deployment or combat validation.