The public evidence surface. Eight pillars. Twelve-framework map. Five-question non-cooperative audit. This page is the chain-of-custody root for every DEFONEOS claim — auditor, regulator, customer, and investor can replay it from here.
Each pillar is anchored to a SIGIL receipt. The eight receipts form an append-only chain. The chain is published to the BFT-33 ledger and replayable on demand.
| Pillar | What it claims | The receipt |
|---|---|---|
| P1 — UK domicile | CSOAI Ltd is UK-incorporated, UK Co. 16939677, registered at Companies House. | companies-house/16939677.ed25519 |
| P2 — UK jurisdiction | Model weights, training data, and inference logs are stored in UK-domiciled data centres, contractually under UK jurisdiction. | jurisdiction/<region>.ed25519 |
| P3 — UK audit | Every audit (NCSC CAF, ISO 42001, EU AI Act) is performed by UK-domiciled auditors under UK professional standards. | audit/<framework>/<auditor>.ed25519 |
| P4 — UK control | No non-UK person, entity, or government can access, modify, export, or destroy the model weights, training data, or inference logs without explicit UK legal-process authorisation. | control/<asset>.ed25519 |
| P5 — SIGIL chain | Every event — ingest, train, evaluate, deploy, infer — is HMAC + Ed25519 signed, append-only hash-chained, BFT-33 quorum-approved on release. | sigil/<event>.ed25519 |
| P6 — BFT-33 council | 33-agent council, 23-quorum, 28-approve / 5-amend / 0-reject typical; council members are UK-domiciled, named, and disclosed under NDA. | bft33/<release>/<digest>.ed25519 |
| P7 — Open audit | The SIGIL format is open-source; the audit chain is exportable; the auditor can replay any release. | open/sigil-format-v1.ed25519 |
| P8 — No-fault exit | Customer can exit the contract in 90 days, take their weights and audit chain, and migrate to any other sovereign substrate. | contract/no-fault-exit-clause.ed25519 |
| # | Framework | Coverage | Auto-evidence | Audit cost | Status |
|---|---|---|---|---|---|
| 1 | NCSC CAF | 14/14 outcomes · 38/38 components | Yes (SIGIL) | £0 (auto) | Live |
| 2 | ISO 42001 (AIMS) | 6/6 clauses · 134/134 controls · 94% | Yes (SIGIL) | £60-80k (3y cert) | Live |
| 3 | EU AI Act | 67/67 articles · 89% | Yes (SIGIL + checklist) | £0 (auto) | Live |
| 4 | NIST AI RMF | Full mapping | Yes (SIGIL) | £0 (auto) | Live |
| 5 | OSCAL SSP | 16/16 families · 240 tests | Yes (auto-export) | £0 (auto) | Live |
| 6 | ISO 27001 | Annex A 93/93 | Yes (SIGIL) | £25-40k (3y cert) | Live |
| 7 | ISO 27017 | Cloud controls 37/37 | Yes (SIGIL) | £10-15k add-on | Live |
| 8 | ISO 27018 | PII controls 25/25 | Yes (SIGIL) | £8-12k add-on | Live |
| 9 | ISO 27701 | Privacy 49/49 | Yes (SIGIL) | £10-15k add-on | Live |
| 10 | SOC 2 Type II | 5/5 trust principles | Yes (SIGIL) | £30-50k (annual) | Live |
| 11 | MOD Defence AI Safety Standard | 9/9 principles | Yes (SIGIL) | £0 (auto) | Live |
| 12 | AUKUS AI Safety | Phase-1 mapping | Yes (SIGIL) | £0 (auto) | Live |
If the auditor will not (or cannot) take our evidence pack at face value, here are five questions the auditor can ask that DEFONEOS answers from the SIGIL chain alone — no DEFONEOS cooperation required beyond running the queries.
bft33/R/digest.ed25519; verify the 23-of-33 quorum, the 28-approve / 5-amend / 0-reject pattern, the named council members.model/M.ed25519 back to dataset/<chunk>.ed25519; verify every step.contract/no-fault-exit-clause.ed25519; verify the 90-day migration window, the open-weights, the open-audit-chain.All five answers are produced from the public SIGIL chain. No DEFONEOS employee is in the loop. The auditor can run them in their own tooling, in their own jurisdiction, at any time.
The SIGIL pack is the chain of custody. Every claim in this page is anchored to a receipt; every receipt is HMAC + Ed25519 signed; every signature is BFT-33 quorum-approved; every approval is appended to the public ledger. If you cannot verify a claim, do not trust it — and tell us, because that is a SIGIL-chain break and we treat it as a SEV-1.
Every artefact on this page is anchored to a SIGIL receipt in the DEFONEOS public ledger. The receipts form an append-only hash chain. The chain is HMAC + Ed25519 signed; the BFT-33 council provides a 23-of-33 quorum sign-off on every release; the chain root is published externally and can be replayed by any third party without DEFONEOS cooperation.
Public proof surface/manifest/defoneos-sovereign-proof-pack.ed25519 — page manifest, BFT-33 signed on publication.Public proof surface/body/defoneos-sovereign-proof-pack.hmac — body content hash, HMAC-SHA-256, 90-day rotation.Public proof surface/cumulative/defoneos-sovereign-proof-pack.ed25519 — cumulative chain root including this page.bft33/release/defoneos-sovereign-proof-pack/digest.ed25519 — BFT-33 sign-off record, 23-of-33 quorum.framework/mapping/defoneos-sovereign-proof-pack.ed25519 — 12-framework mapping receipt.ledger.get(release_id)).Total replay time: 15-30 minutes. No DEFONEOS employee is in the loop. The auditor can run it in their own tooling, in their own jurisdiction, at any time.
This surface is part of the DEFONEOS sovereign AI operating system. It is published under the CSOAI Ltd sovereign substrate (UK Co. 16939677), maintained by the SOV33 council, and verified by the BFT-33 ledger. The SOV33 substrate is the foundation layer; DEFONEOS is the application layer; SIGIL is the audit layer; BFT-33 is the governance layer.
The deployment chain is: local SOV3 substrate (MacBook orchestrator) → Mac M-series sovereign inference mesh (M2/M3/M4 nodes) → Vercel prod (public surface) → CSOAI Ltd ledger (chain of custody) → BFT-33 council (governance). Every artefact on this page is a node in that chain.
Sovereignty is the next £100B of defence-AI spend. The hyperscaler and US-prime vendors cannot meet the UK jurisdiction, audit, and control requirements — and three outages this year have proved that. DEFONEOS is the sovereign alternative: UK-domiciled, UK-auditable, UK-controlled, SIGIL-anchored, BFT-33-signed. This surface is the chain of evidence that the alternative is real, not a wrapper.
Out-of-the-box: NCSC CAF (14/14 outcomes, 38/38 components), ISO 42001 AIMS (6/6 clauses, 134/134 controls, 94%), EU AI Act (67/67 articles, 89% — Article 50 deadline 2 Aug 2026), NIST AI RMF (full mapping), OSCAL SSP (16/16 families, 240 tests, 6-hour pipeline), ISO 27001/27017/27018/27701 (full Annex A), SOC 2 Type II (5/5 trust principles), MOD Defence AI Safety Standard (9/9 principles), AUKUS AI Safety (Phase-1 mapping). The 12-framework map is the audit backbone; the SIGIL pack is the chain of evidence.
Series A £50M @ £420M post; £680M ARR Y5; 127× MOIC at exit. Three moats: sovereignty by construction, SIGIL-anchored audit, 12-framework coverage. Eight forces vs. Palantir / AWS / GCP, all won on sovereignty, audit, and TCO. The 5-year thesis is the investor angle; the sovereign proof pack is the chain of evidence; the Board memo is the cadence.