BioChangeGate
Open sourceScientific state diffs, dependency impact, selective replay and sealed evidence. The reference implementation of the DELA layer.
What it checks
- Typed diffs between evidence versions
- Dependency impact traversal
- Selective replay of reproducible work
- Sealed evidence release
What it does not check
- It does not assess whether the new evidence is scientifically correct.
Where it sits
DELA
BioChangeGate runs inside DELA
Deterministic Evidence Lineage Architecture
The underlying evidence changed. What does that affect?
DELA detects changes in scientific, operational or other source evidence, traces the affected dependencies, preserves the work that remains valid, selectively replays reproducible operations, and routes non-reproducible work to qualified human review.
material changeimmaterial changeaffectedpreservedreplayedheld for expert review
Evidence
Every verdict leaves a record
| Property | Behaviour |
|---|---|
| Determinism | The same input produces the same verdict. A result that does not reproduce is treated as a defect. |
| Signing | Verdicts are Ed25519 signed and anchored in a tamper-evident chain. |
| Replay | A sealed pack can be re-run later to detect verification drift. |
| Availability | Fail-closed. If this gate cannot be reached, the result is recorded as unavailable, never as a pass. |
| Independence | A third party can verify a pack without our source code and without contacting us. |
Other gates in DELA
FoldInputGate
Pre-flight checks for structured prediction job metadata before a run is accep…
ConfidenceGate
Confidence-contract routing for predicted structures. Turns a confidence band …
ProvenanceGate
Provenance continuity checks for scientific AI artefacts. Detects a broken cha…
ReplayGate
Re-runs sealed evidence packs to detect verification drift over time.
Run it against your own cases
The audit protocol is public. You do not need our permission, our source or our involvement to test a gate and publish what you find.