Auditor evidence pack

Negotiation at award

Procurement & Source-to-Pay · Negotiation & Award · line PR4A · Negotiation Cycle. 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

PR4A-1010

Subject

Nadia Nakamura

Requested by

Naomi Okafor

Value

$35.9m

Materiality

critical

Currently held by

VP Sourcing (human)

Sub-function owner

VP Sourcing

Orchestrator

Negotiation Orchestrator

Every action, in order

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

VP Sourcinggate-approverCleared

Cleared set walk-away

2026-08-16 14:14:00ZAuthority PR4-AUTH-H1 · cap $25,000,000Jurisdiction AUAutonomy A0Retention PROC-7YLegal hold HOLD-003

Model

human@n-a

Prompt

human@n-a

Policy

supplier-onboarding@v6

Tools

none

in 87364db5...486d37out c335ebba...8befd7artifact ART-PR4A-1001-1 genesis → 8d1ee775...abd702

Term Comparison AgenttaskCleared

Cleared draft strategy

2026-08-16 22:47:00ZAuthority PR4-AUTH-A1 · cap $25,000,000Jurisdiction AUAutonomy A2Retention 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 a1258784...f6bfe1out 38566750...0600b7artifact ART-PR4A-1001-2 8d1ee775...abd702 → b8031974...318992

Award Documentation AgenttaskCleared

Cleared challenge

2026-08-17 07:20:00ZAuthority PR4-AUTH-A1 · cap $25,000,000Jurisdiction AUAutonomy A2Retention 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 3f4492fb...faacf9out 9edeaaa6...437051artifact ART-PR4A-1001-3 b8031974...318992 → a844257f...774eac

Negotiation Doctrine AgentstrategyCleared

Cleared negotiate

2026-08-17 15:54:00ZAuthority PR4-AUTH-A1 · cap $25,000,000Jurisdiction AUAutonomy A2Retention PROC-7YLegal hold HOLD-003

Model

[email protected]

Prompt

challenger-review@p6

Policy

supplier-onboarding@v6

Tools

read-only-lookup@t12

in c0c5b680...e897f6out d81ea80d...a780ffartifact ART-PR4A-1001-4 a844257f...774eac → 4988440f...1831f5

VP Sourcinggate-approverHeld

Holding at award

2026-08-18 00:27:00ZAuthority PR4-AUTH-H1 · cap $25,000,000Jurisdiction AUAutonomy A0Retention PROC-7YLegal hold HOLD-003

Model

human@n-a

Prompt

human@n-a

Policy

supplier-onboarding@v6

Tools

none

in 88dcbc2a...75c754out 4b514f3d...345987artifact ART-PR4A-1001-5 4988440f...1831f5 → 52bf80ca...9ecaa9

Authority relied on

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

PR4-AUTH-A1ActiveNegotiation Orchestrator

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

Cap $25,000US · UK · DE · SGDelegated from VP SourcingExpires 2026-11-11

PR4-AUTH-H1ActiveVP Sourcing

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

Cap $250,000US · UK · DE · SGDelegated from Procurement & Source-to-Pay leadershipExpires 2027-04-20

Versions in force

Exactly what was running when these actions were taken

Kind	Identifier	Version	Status	Owner
model	reasoner-core	5.4	current	Platform model council
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
prompt	challenger-review	p6	current	Strategy office
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

Set walk-away

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

Approver: VP Sourcing · not reached

Award

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

Approver: VP 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