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# Epic 8200 · SBOM/VEX Pipeline Reproducibility
## Status: ✅ ARCHIVED (93% Complete)
**Archived:** 2025-12-25
**Archive Location:** `docs/implplan/archived/2025-12-25-sprint-8200-reproducibility/`
## Overview
This epic implements the reproducibility, verifiability, and audit-readiness requirements identified in the product advisory analysis of December 2024.
**Goal:** Ensure StellaOps produces byte-for-byte identical outputs given identical inputs, with full attestation and offline verification capabilities.
## Final Completion Status
| Sprint | Topic | Status | Tasks |
|--------|-------|--------|-------|
| 8200.0001.0001 | Verdict ID Content-Addressing | ✅ **COMPLETE** | 12/12 DONE |
| 8200.0001.0001 | Provcache Core Backend | ✅ **COMPLETE** | 44/44 DONE |
| 8200.0001.0002 | DSSE Round-Trip Testing | ✅ **COMPLETE** | 20/20 DONE |
| 8200.0001.0002 | Provcache Invalidation & Air-Gap | 🟡 **90%** | 50/56 DONE, 6 BLOCKED |
| 8200.0001.0003 | Provcache UX & Observability | ✅ **COMPLETE** | 56/56 DONE |
| 8200.0001.0003 | SBOM Schema Validation CI | ✅ **COMPLETE** | 17/17 DONE |
| 8200.0001.0004 | E2E Reproducibility Test | ✅ **COMPLETE** | 26/26 DONE |
| 8200.0001.0005 | Sigstore Bundle Implementation | 🟡 **79%** | 19/24 DONE, 1 N/A, 4 BLOCKED |
| 8200.0001.0006 | Budget Threshold Attestation | 🟡 **61%** | 11/18 DONE, 1 N/A, 6 BLOCKED |
**Total:** 255/273 tasks DONE (93%), 2 N/A, 16 BLOCKED (cross-module integration)
## Epic Timeline
| Phase | Sprints | Duration | Focus |
@@ -153,41 +174,47 @@ This epic implements the reproducibility, verifiability, and audit-readiness req
| Sprint | Priority | Effort | Tasks | Status |
|--------|----------|--------|-------|--------|
| 8200.0001.0001 | P0 | 2 days | 12 | TODO |
| 8200.0001.0002 | P1 | 3 days | 20 | TODO |
| 8200.0001.0003 | P2 | 1 day | 17 | TODO |
| 8200.0001.0004 | P3 | 5 days | 26 | TODO |
| 8200.0001.0005 | P4 | 3 days | 24 | TODO |
| 8200.0001.0006 | P6 | 2 days | 18 | TODO |
| **Total** | — | **16 days** | **117 tasks** | — |
| 8200.0001.0001 (Verdict) | P0 | 2 days | 12 | ✅ DONE |
| 8200.0001.0001 (Provcache) | P0 | 5 days | 44 | ✅ DONE |
| 8200.0001.0002 (DSSE) | P1 | 3 days | 20 | ✅ DONE |
| 8200.0001.0002 (Provcache) | P1 | 5 days | 56 | 🟡 90% (6 BLOCKED) |
| 8200.0001.0003 (UX) | P2 | 4 days | 56 | ✅ DONE |
| 8200.0001.0003 (Schema) | P2 | 1 day | 17 | ✅ DONE |
| 8200.0001.0004 | P3 | 5 days | 26 | ✅ DONE |
| 8200.0001.0005 | P4 | 3 days | 24 | 🟡 79% (4 BLOCKED) |
| 8200.0001.0006 | P6 | 2 days | 18 | 🟡 61% (6 BLOCKED) |
| **Total** | — | **30 days** | **273 tasks** | **93% Complete** |
## Success Criteria
### Must Have (Phase 1-2)
- [ ] VerdictId is content-addressed (SHA-256)
- [ ] DSSE round-trip tests pass
- [ ] Schema validation in CI
- [ ] All existing tests pass (no regressions)
- [x] VerdictId is content-addressed (SHA-256)
- [x] DSSE round-trip tests pass
- [x] Schema validation in CI
- [x] All existing tests pass (no regressions)
### Should Have (Phase 3)
- [ ] Full E2E pipeline test
- [ ] Cross-platform reproducibility verified
- [ ] Golden baseline established
- [x] Full E2E pipeline test
- [x] Cross-platform reproducibility verified
- [x] Golden baseline established
### Nice to Have (Phase 4)
- [ ] Sigstore bundle support
- [ ] Budget attestation in verdicts
- [ ] cosign interoperability
- [x] Sigstore bundle support (core library complete)
- [x] Budget attestation in verdicts (models complete)
- [x] cosign interoperability (mock-based verification complete)
## Documentation Deliverables
| Document | Sprint | Status |
|----------|--------|--------|
| `docs/reproducibility.md` | Pre-req | DONE |
| `docs/testing/schema-validation.md` | P2 | TODO |
| `docs/testing/e2e-reproducibility.md` | P3 | TODO |
| `docs/modules/attestor/bundle-format.md` | P4 | TODO |
| `docs/modules/policy/budget-attestation.md` | P6 | TODO |
| `docs/reproducibility.md` | Pre-req | ✅ DONE |
| `docs/testing/schema-validation.md` | P2 | ✅ DONE |
| `docs/testing/e2e-reproducibility.md` | P3 | ✅ DONE |
| `docs/modules/attestor/bundle-format.md` | P4 | ✅ DONE |
| `docs/modules/policy/budget-attestation.md` | P6 | ✅ DONE |
| `docs/modules/provcache/architecture.md` | P1 | ✅ DONE |
| `docs/modules/provcache/metrics-alerting.md` | P2 | ✅ DONE |
| `docs/modules/ui/provcache-components.md` | P2 | ✅ DONE |
## Risk Register
@@ -220,3 +247,4 @@ This epic implements the reproducibility, verifiability, and audit-readiness req
| Date | Version | Changes |
|------|---------|---------|
| 2025-12-24 | 1.0 | Initial epic creation based on product advisory gap analysis |
| 2025-12-25 | 2.0 | **Epic archived at 93% completion.** All 9 sprints moved to `archived/2025-12-25-sprint-8200-reproducibility/`. 255/273 tasks DONE. 16 tasks BLOCKED pending cross-module integration (Signer event publishing, Attestor service integration). Follow-up sprints required for remaining integration work. |