Auditor evidence pack

Sourcing event at review

Procurement & Source-to-Pay · Sourcing & RFx · line PR3C · Bid Analysis. 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

Append-only, sequenced

Agent actions

Taken by software

Human actions

Taken by a named person

Refusals

Blocked by the authority register

Corrections

Later record supersedes an earlier one

Legal hold

Held

HOLD-003

The unit

What the work was, and where it sits

Reference

PR3C-1011

Subject

Callum Novak

Requested by

Mei Okafor

Value

$2.1m

Materiality

high

Currently held by

Total Cost Modeling Agent (agent)

Sub-function owner

Director, Strategic Sourcing

Orchestrator

Sourcing Orchestrator

Every action, in order

Actor, authority, versions in force, and the hash link to the record before it

Requirement Capture AgentgbsCleared

Cleared normalize bids

2026-08-18 01:32:00ZAuthority PR3-AUTH-A1 · cap $2,000,000Jurisdiction USAutonomy A3Retention PROC-7YLegal hold HOLD-003

Model

[email protected]

Prompt

task-execution@p21

Policy

supplier-onboarding@v6

Tools

ledger-write@t7, document-fetch@t9

in add938ee...129e44out e78aebe5...cdea70artifact ART-PR3C-1001-1 genesis → 0d1787c2...6add09

Supplier Longlist AgenttaskCleared

Cleared model total cost

2026-08-18 03:02:00ZAuthority PR3-AUTH-A1 · cap $2,000,000Jurisdiction USAutonomy A3Retention PROC-7YLegal hold HOLD-003

Model

[email protected]

Prompt

task-execution@p21

Policy

supplier-onboarding@v6

Tools

document-fetch@t9, read-only-lookup@t12

in c078a66e...2246b4out a6131c78...a39512artifact ART-PR3C-1001-2 0d1787c2...6add09 → 506cb866...175489

RFx Authoring AgenttaskCleared

Cleared score

2026-08-18 04:31:00ZAuthority PR3-AUTH-A1 · cap $2,000,000Jurisdiction USAutonomy A3Retention PROC-7YLegal hold HOLD-003

Model

[email protected]

Prompt

task-execution@p21

Policy

supplier-onboarding@v6

Tools

document-fetch@t9, read-only-lookup@t12

in a950bc86...960e81out 4161cdfa...37d09dartifact ART-PR3C-1001-3 506cb866...175489 → 7843704b...5d7837

Bid Analysis AgentgbsCleared

Cleared draft recommendation

2026-08-18 06:01:00ZAuthority PR3-AUTH-A1 · cap $2,000,000Jurisdiction USAutonomy A3Retention PROC-7YLegal hold HOLD-003

Model

[email protected]

Prompt

task-execution@p21

Policy

supplier-onboarding@v6

Tools

ledger-write@t7, document-fetch@t9

in 8b7dbd31...b8f3d8out dd600f6b...a55b71artifact ART-PR3C-1001-4 7843704b...5d7837 → 9b04b776...f7e4ff

Director, Strategic Sourcinggate-approverIn progress

Holding at review

2026-08-18 07:30:00ZAuthority PR3-AUTH-H1 · cap $2,000,000Jurisdiction USAutonomy A0Retention PROC-7YLegal hold HOLD-003

Model

human@n-a

Prompt

human@n-a

Policy

supplier-onboarding@v6

Tools

none

in 42a96afa...680a9bout 20d9302d...fd8105artifact ART-PR3C-1001-5 9b04b776...f7e4ff → 2a8ccf40...6afbdf

Authority relied on

Who was allowed to do this, up to what value, in which jurisdictions

PR3-AUTH-A1ActiveSourcing Orchestrator

Any unit on a sourcing & rfx line where every intake check passed, the policy in force is current, and the value sits inside the cap below.

Cap $250,000US · UK · DE · SG · AUDelegated from Director, Strategic SourcingExpires 2026-12-05

PR3-AUTH-H1ActiveDirector, Strategic Sourcing

Anything the agent grant refuses, plus any override of an agent outcome. more

Cap $2,000,000US · UK · DE · SG · AUDelegated from Procurement & Source-to-Pay leadershipExpires 2027-04-10

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

Review

Held for a named human when the unit exceeds the sourcing event decision envelope, when confidence falls below the floor, or when a policy clause is engaged.

Approver: Director, Strategic Sourcing · cleared on this chain

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