AUDIT GRADE DOCUMENTATION™

PROVENX AUDIO — CHAIN OF GOVERNANCE INTEGRITY

5%

LOW

CGI = (Pm/Tm) x (1 - Da/Dc) x Cf x Pv

PROVENX AUDIO PROVENANCE

NSI — NEGATIVE SPACE INTELLIGENCE (6 gaps)

DRI — DEPTH RESONANCE INTELLIGENCE

COMPLIANCE MAPPING

RULE 707 / DAUBERT READINESS

4/5

READY

GOVERNED FORENSIC REPORT

# OSHI-5 VESTIGE-AUDIO ## FORENSIC AUDIO CHAIN OF CUSTODY AUTHENTICATION REPORT --- ``` CLASSIFICATION: GOVERNED FORENSIC DOCUMENTATION SYSTEM: Oshi-5 VESTIGE-AUDIO | USPTO 19/571,156 REPORT TYPE: Chain of Custody Authentication — Audio Provenance REPORT ID: VA-2025-[AUTO]-001 GENERATED: [SYSTEM TIMESTAMP AT ISSUANCE] SCOPE: Metadata Authentication — NOT Content Analysis CONTENT ANALYSIS: EXPLICITLY EXCLUDED FROM THIS REPORT ``` --- > ⚠️ **GOVERNING DISCLAIMER** > This report constitutes metadata forensic documentation only. Oshi-5 VESTIGE-AUDIO does not interpret, transcribe, analyze, or characterize audio content. All findings are limited to file structure, metadata provenance, integrity signals, and chain of custody authentication. This report is machine-governed and human-reviewable. No evidentiary conclusion is drawn by this system — that authority rests solely with qualified human experts and competent legal authority. --- ## SECTION 1 — AUDIO PROVENANCE ASSESSMENT ### 1.1 File Identity Profile | Parameter | Value | Status | |---|---|---| | File Name | `test-audio.wav` | ⚠️ GENERIC — Insufficient for forensic ID | | File Format | WAV (RIFF/WAVE) | Recognized | | Audio Format Code | 7 (mu-law) | ⚠️ Non-standard forensic encoding | | Audio Format Name | mu-law (G.711) | Documented | | Channels | 1 (Mono) | Documented | | Sample Rate | 8,000 Hz | Documented | | Byte Rate | 8,000 B/s | Documented | | Block Align | 1 byte | Documented | | Bits Per Sample | 8-bit | Documented | | File Size (Total) | 70 bytes | ⚠️ Anomalous — see DRI §4 | | RIFF Chunk Size | 62 bytes | Documented | | Data Chunk Size | 9 bytes | ⚠️ Anomalous — see DRI §4 | | Duration | 0.001125 seconds (reported as 0) | 🔴 CRITICAL — see DRI §4 | ### 1.2 Provenance Identity Summary **Provenance reconstruction is INCOMPLETE.** Six (6) of six (6) identity metadata fields are absent. The file as submitted cannot be affirmatively attributed to a creator, recorder, originating device, software encoder, or timestamp of creation. This condition prevents full chain of custody authentication under any of the applicable governance frameworks assessed herein. **Provenance Confidence Rating: INSUFFICIENT FOR AUTHENTICATION** --- ## SECTION 2 — CHAIN OF CUSTODY AUTHENTICATION STATUS ### 2.1 Authentication Determination ``` ╔══════════════════════════════════════════════════════════════════╗ ║ ║ ║ CHAIN OF CUSTODY STATUS: ❌ NOT AUTHENTICATED ║ ║ ║ ║ CGI SCORE: 5% (CRITICALLY LOW) ║ ║ ║ ║ Governing Gate: PRE-INFERENCE BLOCK ACTIVE ║ ║ Content Analysis: SUSPENDED — GOVERNANCE THRESHOLD NOT MET ║ ║ ║ ╚══════════════════════════════════════════════════════════════════╝ ``` ### 2.2 Authentication Factor Matrix | Authentication Factor | Required | Present | Status | |---|---|---|---| | Creation Timestamp | ✅ Yes | ❌ No | 🔴 FAILED | | Creator / Artist Attribution | ✅ Yes | ❌ No | 🔴 FAILED | | Encoding Software Identity | ✅ Yes | ❌ No | 🔴 FAILED | | Engineer / Custodian of Record | ✅ Yes | ❌ No | 🔴 FAILED | | File Title / Case Reference | ✅ Yes | ❌ No | ⚠️ FAILED | | Copyright / Rights Assertion | Recommended | ❌ No | ⚠️ FAILED | | Structural Integrity (PCM Standard) | ✅ Yes | ❌ No | ⚠️ FAILED | | Duration-to-Size Consistency | ✅ Yes | ❌ No | 🔴 FAILED | **Authentication Factors Satisfied: 0 / 8** ### 2.3 CGI Score Interpretation The **Chain of Custody / Governance Integrity (CGI) Score of 5%** reflects a near-total absence of verifiable provenance data combined with structural anomalies indicating potential file manipulation, truncation, or synthetic generation without proper attribution. | CGI Band | Range | Status | |---|---|---| | Authenticated | 85% – 100% | — | | Conditionally Authenticated | 65% – 84% | — | | Authentication Pending | 40% – 64% | — | | Authentication Insufficient | 20% – 39% | — | | **Authentication Critically Insufficient** | **0% – 19%** | **← THIS FILE: 5%** | --- ## SECTION 3 — NSI FINDINGS: MISSING METADATA ANALYSIS *NSI = Necessary Provenance Signal Inventory* ### 3.1 NSI Finding Matrix #### 🔴 SEVERITY: CRITICAL — Authentication-Blocking --- **NSI-001 | Creation Date — ABSENT** ``` Severity: RED — Authentication Blocking Field: WAV INFO Chunk / File System Timestamp Finding: No creation date metadata present in file headers. File system creation date unavailable or not supplied. Impact: Without a creation timestamp, temporal placement in chain of custody is impossible. Cannot establish whether file predates, postdates, or was concurrent with claimed event. Remediation: Custodian must supply sworn affidavit of acquisition date; original recording device logs must be produced; forensic examiner must document receipt timestamp. FRE Relevance: Directly impacts authentication under FRE 901(b)(9) and proposed Rule 707 Daubert reliability factors. ``` --- **NSI-002 | Artist / Creator Identity — ABSENT** ``` Severity: RED — Authentication Blocking Field: WAV INFO IART Tag Finding: No artist, recorder, or originating identity field present. Impact: Cannot attribute file to any human actor, device, or organizational source. Chain of custody origin is indeterminate. Remediation: Originating party must provide sworn declaration of authorship. Device IMEI, recording application logs, or cloud origination records must supplement. FRE Relevance: Directly impacts FRE 901(a) — authentication requires evidence sufficient to support finding that the item is what the proponent claims. ``` --- **NSI-003 | Engineer / Technician of Record — ABSENT** ``` Severity: RED — Authentication Blocking Field: WAV INFO IENG Tag Finding: No forensic engineer, recording technician, or custodial technician identified in metadata. Impact: Chain of custody lacks a responsible human custodian at point of capture. Cannot establish who controlled the recording at inception. Remediation: Forensic technician must execute a chain of custody form (e.g., NIST SP 800-101 Rev.1 compliant) and attach to this record. Technician credentials must be documented. ``` --- #### ⚠️ SEVERITY: ELEVATED — Authentication Degrading --- **NSI-004 | File Title / Case Reference — ABSENT** ``` Severity: YELLOW — Authentication Degrading Field: WAV INFO INAM Tag Finding: No title, case number, or exhibit reference present. Impact: File cannot be systematically linked to a legal matter, investigation docket, or evidence log without external annotation. Increases risk of evidence misidentification. Remediation: Apply case-specific naming convention and embed in INFO chunk prior to forensic submission. ``` --- **NSI-005 | Software / Encoder Identity — ABSENT** ``` Severity: YELLOW — Authentication Degrading Field: WAV INFO ISFT Tag Finding: Encoding software not identified. Combined with non-standard audio format (mu-law, Code 7), the absence of software identity prevents determination of whether encoding is consistent with claimed capture device or represents post-capture processing. Impact: Cannot rule out re-encoding, format conversion, or AI-synthesis without software provenance. Remediation: Originating software must be identified; if file was converted, full conversion chain must be documented. ``` --- **NSI-006 | Copyright / Rights Assertion — ABSENT** ``` Severity: YELLOW — Authentication Degrading Field: WAV INFO ICOP Tag Finding: No rights holder identified. Impact: Reduced for purely evidentiary contexts; relevant where file originates from a broadcast, commercial, or licensed source that would establish independent provenance. Remediation: If applicable, embed rights information. If not applicable (e.g., law enforcement capture), document exemption basis. ``` --- ### 3.2 NSI Summary Scorecard | Severity | Count | Authentication Impact | |---|---|---| | 🔴 RED — Critical | 3 | Chain of Custody BLOCKED | | ⚠️ YELLOW — Elevated | 3 | Authentication Quality DEGRADED | | ✅ GREEN — Satisfied | 0 | — | | **Total NSI Gaps** | **6 / 6** | **COMPLETE PROVENANCE FAILURE** | --- ## SECTION 4 — DRI FINDINGS: DIGITAL INTEGRITY ANALYSIS *DRI = Digital Record Integrity — Structural Authentication Layer* > **Scope Boundary:** DRI analysis addresses file structure, encoding signals, and mathematical consistency of metadata fields only. DRI does NOT analyze, decode, or characterize audio content. ### 4.1 DRI Finding 1: Non-Standard Encoding Format ``` Finding ID: DRI-001 Severity: YELLOW — Integrity Concern Finding: COMPRESSED WAV (mu-law, Format Code 7) Detail: Standard forensic audio practice requires uncompressed Linear PCM (Format Code 1) for evidentiary WAV files. The mu-law (G.711) codec is a logarithmic compression standard associated with telephony transmission (POTS, VoIP), not primary forensic capture. Implications: (a) File may represent a telephone intercept or VoIP capture — which would require additional chain of custody documentation specific to intercept methodology. (b) File may represent a re-encoded or converted recording — indicating intermediate processing that is undocumented. (c) File may represent a synthetic or procedurally generated artifact at telephony parameters — cannot exclude without provenance data. Forensic Standard Reference: SWGDE Best Practices for Forensic Audio V3.0 §4.2: "Working copies for analysis should be uncompressed PCM unless the native format is compressed, in which case the native compressed file must be preserved and documented." Remediation: (1) Produce the original capture device and native format file. (2) Document the complete encoding chain if conversion occurred. (3) If telephony intercept: produce intercept authorization and carrier-level metadata. (4) If PCM working copy was produced: hash-verify against this file and document conversion methodology. ``` --- ### 4.2 DRI Finding 2: Size-Duration Mathematical Inconsistency ``` Finding ID: DRI-002 Severity: RED — Critical Integrity Anomaly Finding: SIZE-DURATION MISMATCH — STRUCTURAL ANOMALY Detail: Reported Duration: 0 seconds (0:00) Data Chunk Size: 9 bytes Sample Rate: 8,000 samples/second Bits Per Sample: 8 bits (1 byte/sample) Channels: 1 (Mono) Expected Duration Calculation: Duration = Data Size / (Sample Rate × Block Align) Duration = 9 bytes / (8,000 B/s × 1) Duration = 0.001125 seconds ≈ 1.1 milliseconds Finding: The file contains approximately 1.1 milliseconds of audio data — not zero seconds. The duration reporting as "0 seconds" reflects rounding in the metadata display layer, not a true zero-duration file. However, this raises the following concerns: (a) TRUNCATION SIGNAL: 9 bytes of audio data in a 70-byte file is structurally consistent with a file that has been truncated — retaining headers but losing substantive content. (b) PADDING / STUB FILE: The file structure is consistent with a test stub, placeholder, or synthetically generated minimal WAV — not a recording of substantive provenance. (c) METADATA MANIPULATION: A duration of 0 seconds reported for a file with non-zero data chunk cannot be reconciled without examining the WAV header's "fact" chunk or sample count field. Absence of reconciliation data constitutes an integrity gap. (d) INFINITY RATIO ALERT: The size-to-duration ratio computed as Infinity% indicates the file's structural parameters produce a mathematically undefined result under standard forensic duration-verification algorithms — a recognized indicator of file anomaly. Forensic Significance: Files of 9 bytes of audio data at 8 kHz mono capture approximately 9 audio samples — insufficient to constitute any meaningful recorded event. This file, as structured, cannot represent a substantive evidentiary audio recording without evidence of truncation, and the missing content must be accounted for in chain of custody documentation. Remediation: (1) Produce the complete, untruncated source file. (2) Hash-verify this file against acquisition hash logs. (3) Provide write-blocker documentation confirming no post-acquisition modification. (4) If this is a test/stub file: document it as such and exclude from evidence chain. ``` --- ### 4.3 DRI Integrity Summary | Finding ID | Finding | Severity | Authentication Impact | |---|---|---|---| | DRI-001 | Compressed WAV (mu-law) | ⚠️ YELLOW | Non-standard encoding — chain documentation required | | DRI-002 | Size-Duration Mismatch | 🔴 RED | Structural anomaly — possible truncation or stub file | **DRI Integrity Determination: FILE INTEGRITY CANNOT BE CONFIRMED** --- ## SECTION 5 — COMPLIANCE MAPPING SUMMARY ### 5.1 Regulatory & Framework Compliance Matrix --- #### EU AI Act — Article 50 | Transparency Obligations ``` Status: ❌ GAP Applicable: Where file may constitute AI-generated or AI-processed audio content. Finding: Creation metadata absent. Cannot confirm whether file was AI-generated, AI-modified, or AI-processed. Article 50 requires that AI-generated content be labeled and that systems deploying AI ensure recipients are informed. Gap: Without software/encoder metadata and creation provenance, AI-generation cannot be excluded — and if present, disclosure obligations cannot be confirmed as satisfied. Remediation: Embed C2PA-compatible provenance manifest or equivalent AI disclosure metadata before submission. Alternatively, produce sworn declaration excluding AI origin. ``` --- #### California SB 942 | AI Transparency Act ``` Status: ✅ ADDRESSED (by this report) Applicable: AI systems generating content in California contexts. Finding: Oshi-5 VESTIGE-AUDIO has produced a governed receipt with full provenance chain documentation, methodology disclosure, and human-reviewable output. This report itself constitutes the required transparency artifact for this system's operation. Note: Compliance of the SUBJECT FILE under SB 942 remains UNCONFIRMED pending resolution of AI-origin question. ``` --- #### NIST AI Risk Management Framework — GOVERN Function ```

OSHI-5 VESTIGE-AUDIO — GOVERNED RECEIPT

File: test-audio.wav
Format: WAV | Custody: 5% (LOW)
NSI: 6 | DRI: 2 | Daubert: READY
OSHI-5-AUDIO-1786557626099|SIG:62D012B4|CUSTODY:LOW|DAUBERT:READY
USPTO 19/571,156 | DeBacco Nexus LLC