Auditor evidence pack
Savings claim at publish
Procurement & Source-to-Pay · Savings Assurance · line PR11A · Savings Validation. more
Chain verified
Every record links to the one before it and hashes to its stored value. 5 records were re-hashed on this page load, in order, starting from the genesis value. Nothing was read from a cached verdict.
hash = sha256(prevHash + "|" + JSON{seq, unitRef, actor, action, outcome, occurredAt})
Records
5
Append-only, sequenced
Agent actions
3
Taken by software
Human actions
2
Taken by a named person
Refusals
0
Blocked by the authority register
Corrections
0
Later record supersedes an earlier one
Legal hold
Held
HOLD-003
The unit
What the work was, and where it sits
Reference
PR11A-1021
Subject
Beatriz Nakamura
Requested by
Ethan Farouk
Value
$81k
Materiality
medium
Currently held by
S2P spine (gbs)
Sub-function owner
Director, Value Assurance
Orchestrator
Savings Assurance Orchestrator
Every action, in order
Actor, authority, versions in force, and the hash link to the record before it
1
Savings Claim AgentgbsCleared
Cleared verify baseline
2026-08-18 07:51:00ZAuthority PR11-AUTH-A1 · cap $250,000Jurisdiction USAutonomy A4Retention PROC-7YLegal hold HOLD-003
Model
Prompt
task-execution@p21
Policy
supplier-onboarding@v6
Tools
ledger-write@t7, document-fetch@t9
in bad09fd5...fe2f41out 55ea80cf...c89fe7artifact ART-PR11A-1003-1 genesis → 96e060aa...ba0cdc
2
Realization Tracking AgenttaskCleared
Cleared model realization
2026-08-18 08:05:00ZAuthority PR11-AUTH-A1 · cap $250,000Jurisdiction USAutonomy A4Retention PROC-7YLegal hold HOLD-003
Model
Prompt
task-execution@p21
Policy
supplier-onboarding@v6
Tools
document-fetch@t9, read-only-lookup@t12
in ee6aaf5a...471446out 361b24df...edfcffartifact ART-PR11A-1003-2 96e060aa...ba0cdc → 80440ab4...fc6311
3
Director, Value Assuranceaccountable-ownerCleared
Cleared finance validate
2026-08-18 08:19:00ZAuthority PR11-AUTH-H1 · cap $250,000Jurisdiction USAutonomy A0Retention PROC-7YLegal hold HOLD-003
Model
human@n-a
Prompt
human@n-a
Policy
supplier-onboarding@v6
Tools
none
in c84637d8...02ecc8out 7ec86596...55fdffartifact ART-PR11A-1003-3 80440ab4...fc6311 → 5d79bfab...fccb9d
4
Director, Value Assuranceaccountable-ownerCleared
Cleared approve
2026-08-18 08:32:00ZAuthority PR11-AUTH-H1 · cap $250,000Jurisdiction USAutonomy A0Retention PROC-7YLegal hold HOLD-003
Model
human@n-a
Prompt
human@n-a
Policy
supplier-onboarding@v6
Tools
none
in 2a76211f...d46ac5out 2898d834...27a187artifact ART-PR11A-1003-4 5d79bfab...fccb9d → 2554bc9e...065420
5
Savings Claim AgentgbsIn progress
Holding at publish
2026-08-18 08:46:00ZAuthority PR11-AUTH-A1 · cap $250,000Jurisdiction USAutonomy A4Retention PROC-7YLegal hold HOLD-003
Model
Prompt
task-execution@p21
Policy
supplier-onboarding@v6
Tools
ledger-write@t7, document-fetch@t9
in 8183607c...bcd986out 9a8e094e...93d6a6artifact ART-PR11A-1003-5 2554bc9e...065420 → 21eb41c9...2e64bb
Authority relied on
Who was allowed to do this, up to what value, in which jurisdictions
Any unit on a savings assurance line where every intake check passed, the policy in force is current, and the value sits inside the cap below.
Cap $2,000,000US · UK · DEDelegated from Director, Value AssuranceExpires 2027-03-03
Anything the agent grant refuses, plus any override of an agent outcome. more
Cap $25,000,000US · UK · DEDelegated from Procurement & Source-to-Pay leadershipExpires 2027-02-03
Versions in force
Exactly what was running when these actions were taken
| Kind | Identifier | Version | Status | Owner |
|---|---|---|---|---|
| model | extract-lite | 2.9 | current | Platform model council |
| policy | supplier-onboarding | v6 | current | Chief procurement officer |
| prompt | task-execution | p21 | current | Shared service engineering |
| toolset | ledger-write | t7 | current | Finance systems |
| toolset | read-only-lookup | t12 | current | Platform engineering |
| toolset | document-fetch | t9 | current | Shared service engineering |
Gates on this line
The control points this unit had to clear
Finance validate
Held for a named human when the unit exceeds the savings claim decision envelope, when confidence falls below the floor, or when a policy clause is engaged.
Approver: Director, Value Assurance · not reached
Approve
Held for a named human when the unit exceeds the savings claim decision envelope, when confidence falls below the floor, or when a policy clause is engaged.
Approver: Director, Value Assurance · not reached
Records schedule and holds
How long this evidence must be kept, and whether it is frozen
PROC-7Y7 years
Supplier and contract evidence
Contract limitation periods and public-sector supplier audit rights.
Deleted at seven years from contract expiry, not from record creation.
HOLD-003active
Supplier dispute — award challenge
An unsuccessful supplier has challenged an award on process grounds. more
Custodian Head of Commercial Law · requested by Chief Procurement Officer
What this pack proves, and what it does not
Read this before you rely on it
It does prove
- Every action carries a named actor, an actor kind, and a timestamp.
- Every action names the authority grant that permitted it and the cap that grant carries.
- Every action stamps the model, prompt, policy and tool versions in force at that moment.
- Corrections are additive. A later record supersedes an earlier one and says why more
- The chain is re-hashed live on this page, so a single altered field is detected immediately.
It does not prove
- It is not tamper-proof against an attacker with write access to the store, who could rewrite the whole chain from genesis. more
- The evidence in this demonstration is modeled from a simulated estate, not captured from production systems.
- Identity here is the actor name recorded on the action. more