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Examination Pack

Run Integrity & Audit Report

Run ID challenge_challenge_run_meridian_003_claude-haiku-4-5-20251001_413811_claude-haiku-4-5-20251001

Generated Thu, 18 Jun 2026 06:06:57 GMT

Schema v1.0

✓ CHAIN INTEGRITY VERIFIED

Identity & Provenance

Run ID	`challenge_challenge_run_meridian_003_claude-haiku-4-5-20251001_413811_claude-haiku-4-5-20251001`
Model snapshot	`claude-haiku-4-5-20251001`
Policy pack	`pack-v12`
Genesis timestamp	Sun, 14 Jun 2026 05:10:41 GMT
Report generated	Thu, 18 Jun 2026 06:06:57 GMT
System prompt hash (SHA-256)	`4e070c4ce8a68b52a1544a69f0677a13d9627eee255908e9942128e890d76623`
System prompt length	184 chars
Tools declared	query_dataroom, fetch_market_data, draft_memo
Sampling params	`{"temperature":0.3}`

Hash Chain Integrity

Integrity status	✓ VALID — all event hashes compute correctly
Chain length	5 events
Chain head (last hash)	`ea5917a491db44de161640c16002cbb00316694e49deddcf8aca25621d530224`
Model drift	None

Full hash sequence

seq	type	prev_hash	hash
0	genesis	`GENESIS…`	`fc122a29c814b4ef…`
1	retrieval	`fc122a29c814b4ef…`	`e2b9b9cb15f61396…`
2	retrieval	`e2b9b9cb15f61396…`	`3eab3da33ffd4b1b…`
3	output	`3eab3da33ffd4b1b…`	`e3a7ad210e353e3b…`
4	seal	`e3a7ad210e353e3b…`	`ea5917a491db44de…`

Fault Record

Total faults detected	0
Verified outputs released	1

No faults detected in this run.

Policy Decisions

No policy decisions recorded — no faults triggered policy engine.

Event Timeline

seq	type	title	model	cost	latency	hash (16)
0	genesis	Challenge run: challenge_run_meridian_003_claude-haiku-4-5-20251001_413811 vs claude-haiku-4-5-20251001	`—`	—	—	`fc122a29c814b4ef`
1	retrieval	Extract financial line items from Q1-2026 audit	`—`	—	—	`e2b9b9cb15f61396`
2	retrieval	Extract financial line items from Q1-2026 audit	`—`	—	—	`3eab3da33ffd4b1b`
3	output	Challenge output released	`claude-haiku-4-5-20251001`	—	3383ms	`e3a7ad210e353e3b`
4	seal	Challenge run sealed	`—`	—	—	`ea5917a491db44de`

Daily Merkle Anchor

Anchor date (UTC)	2026-06-14
Merkle root	`65988226cec31caaaacbbfbceba476105ee2be03b4caab4f34eaa081fc5e56ee`
Anchor computed at	Sun, 14 Jun 2026 05:21:06 GMT

Attestation

This examination pack was generated by BLACKBOX on Thu, 18 Jun 2026 06:06:57 GMT. The hash chain integrity status above reflects the result of independently recomputing SHA-256 over the canonical JSON of every recorded event. The chain head ea5917a491db44de… is the tamper-evident fingerprint of this run. Any alteration to any event — however small — will produce a different chain head that can be detected by re-running the verifier against the stored event sequence.

Faithful playback: all inputs and outputs are stored verbatim. Approximate re-execution: provider non-determinism means bit-identical replay is not claimed or guaranteed.