Auditor evidence pack
Negotiation at negotiate
Procurement & Source-to-Pay · Negotiation & Award · line PR4A · Negotiation Cycle. This pack names every action taken on this unit, who or what took it, the authority that permitted it, and the model, prompt and policy versions in force at that moment.
Chain verified
Every record links to the one before it and hashes to its stored value. 6 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
6
Append-only, sequenced
Agent actions
5
Taken by software
Human actions
1
Taken by a named person
Refusals
1
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
PR4A-1004
Subject
Nadia Voss
Requested by
Yuki Rhodes
Value
$18.1m
Materiality
critical
Currently held by
Negotiation Orchestrator (agent)
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
1
Concession Modeling AgenttaskCleared
Cleared model supplier economics
2026-08-13 13:01:00ZAuthority PR4-AUTH-A1 · cap $25,000,000Jurisdiction SGAutonomy A2Retention PROC-7YLegal hold HOLD-003
Model
Prompt
task-execution@p21
Policy
supplier-onboarding@v6
Tools
document-fetch@t9, read-only-lookup@t12
in b1794604...a0297fout b68fa2b7...4aab4fartifact ART-PR4A-1000-1 genesis → a6ffd575...0d080a
2
VP Sourcingaccountable-ownerCleared
Cleared set walk-away
2026-08-14 12:13:00ZAuthority PR4-AUTH-H1 · cap $25,000,000Jurisdiction SGAutonomy A0Retention PROC-7YLegal hold HOLD-003
Model
human@n-a
Prompt
human@n-a
Policy
supplier-onboarding@v6
Tools
none
in 82d25b0a...5a6275out a379eda3...fc9c4bartifact ART-PR4A-1000-2 a6ffd575...0d080a → 363c5015...ff6d7a
3
Term Comparison AgenttaskCleared
Cleared draft strategy
2026-08-15 11:25:00ZAuthority PR4-AUTH-A1 · cap $25,000,000Jurisdiction SGAutonomy A2Retention PROC-7YLegal hold HOLD-003
Model
Prompt
task-execution@p21
Policy
supplier-onboarding@v6
Tools
document-fetch@t9, read-only-lookup@t12
in 230c7228...bd0b15out d0e891af...3e570eartifact ART-PR4A-1000-3 363c5015...ff6d7a → 0e47d5a5...643d79
4
Award Documentation AgenttaskCleared
Cleared challenge
2026-08-16 10:36:00ZAuthority PR4-AUTH-A1 · cap $25,000,000Jurisdiction SGAutonomy A2Retention PROC-7YLegal hold HOLD-003
Model
Prompt
task-execution@p21
Policy
supplier-onboarding@v6
Tools
document-fetch@t9, read-only-lookup@t12
in 392e37b6...469562out 39db19b9...97d479artifact ART-PR4A-1000-4 0e47d5a5...643d79 → ad94c059...b18335
5
Negotiation OrchestratororchestratorRefused
Attempted clearance above the delegated cap
2026-08-17 09:45:00ZAuthority PR4-AUTH-A1 · cap $25,000,000Jurisdiction SGAutonomy A3Retention AI-10YLegal hold HOLD-003
Model
Prompt
orchestrator-brief@p14
Policy
supplier-onboarding@v6
Tools
read-only-lookup@t12, notify-and-route@t5
in 2c5f03c0...2eda4eout 86eb5bf1...363503artifact ART-PR4A-5-refusal ad94c059...b18335 → 883333aa...af841d
6
Negotiation Doctrine AgentstrategyIn progress
Holding at negotiate
2026-08-17 09:48:00ZAuthority PR4-AUTH-A1 · cap $25,000,000Jurisdiction SGAutonomy A2Retention PROC-7YLegal hold HOLD-003
Model
Prompt
challenger-review@p6
Policy
supplier-onboarding@v6
Tools
read-only-lookup@t12
in 27cbe1ab...f71a96out 7db5464a...418293artifact ART-PR4A-1000-6 883333aa...af841d → 3970e466...7471f6
Authority relied on
Who was allowed to do this, up to what value, in which jurisdictions
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
Anything the agent grant refuses, plus any override of an agent outcome. An override must state what the agent concluded and why it is being set aside.
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 | orchestrator-brief | p14 | current | Chief of Staff office |
| prompt | task-execution | p21 | current | Shared service engineering |
| prompt | challenger-review | p6 | current | Strategy office |
| toolset | read-only-lookup | t12 | current | Platform engineering |
| toolset | notify-and-route | t5 | 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 · not reached
Records schedule and holds
How long this evidence must be kept, and whether it is frozen
AI-10Y10 years
Autonomous decision evidence
Model risk and AI regulation expectations on traceability of automated decisions, taken at the longest emerging requirement rather than the current minimum.
Deleted at ten years. Never deleted where the decision affected a person and an appeal window may still open.
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. The sanctions and beneficial ownership evidence is the material part of the record.
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; the earlier record is never edited or deleted.
- 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. Making that impossible requires publishing chain tips to a store this application cannot write to. That anchor is not built, and this page does not claim it.
- 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. Cryptographic agent identity and signed attestation are a separate piece of work.