Checks file integrity against manifest hashes and validates OpenTimestamps proofs.

Install

mkdir -p .claude/skills/verify-bundle && curl -L -o skill.zip "https://agentskills.codes/api/skills/download/11797" && unzip -o skill.zip -d .claude/skills/verify-bundle && rm skill.zip

Installs to .claude/skills/verify-bundle

Activation

This is the description your AI agent reads to decide when to run this skill — the better it matches your request, the more reliably it fires.

Use when re-hashing evidence and verifying against recorded hashes and OpenTimestamps proofs.
93 chars✓ has a “when” trigger
Intermediate

Key capabilities

  • Re-hash files to confirm evidence integrity
  • Compare re-hashed files against recorded manifests
  • Validate BagIt manifests
  • Verify OpenTimestamps proofs for immutability
  • Detect accidental or malicious file modifications
  • Aggregate verification results into a PASS/FAIL report

How it works

The skill re-hashes files and compares them against recorded manifests, validates BagIt manifests, and verifies OpenTimestamps proofs. It aggregates these results into a single PASS/FAIL report.

Inputs & outputs

You give it
Path to evidence directory, BagIt bag, or individual file
You get back
A PASS/FAIL report detailing verification status, file divergences, and OTS proof validity

When to use verify-bundle

  • Validate BagIt evidence integrity
  • Audit chain-of-custody milestones
  • Verify OpenTimestamps anchors
  • Detect accidental file modifications

About this skill

Verify Bundle

Re-hash files and compare against recorded hashes, validate BagIt manifests, and verify OpenTimestamps proofs.

When to use

  • Confirming evidence integrity after transfer or archival
  • Detecting accidental or malicious file modifications
  • Auditing chain-of-custody milestones before handoff
  • Validating OpenTimestamps anchors for immutability proof

Inputs to gather

  • Path to evidence directory, BagIt bag, or individual file (required)

Procedure

  1. If input is a BagIt bag (contains bagit.txt): run bagit.py --validate <dir>.
  2. If input is a directory with a .sha256 manifest: re-run find <dir> -type f -exec sha256sum {} \;, compare output against manifest entries using diff.
  3. For any .ots files found in or near the evidence: run ots verify <file> on each.
  4. Aggregate results into a single PASS/FAIL report:
    • All files match recorded hashes: PASS
    • Any divergence: FAIL with per-file diff detail
    • All OpenTimestamps proofs valid: noted
    • Any OTS verify failure: FAIL with reason
  5. Report to user: overall status, per-file divergence (if any), OTS proof validity, and recommendation (re-bag if needed, or escalate if tampering suspected).

Output / side effects

  • Verification results printed to stdout (no files modified).
  • User sees: PASS/FAIL status, detailed divergence if any, OTS validity.
  • Read-only on all input files.

Safety / constraints

  • This is a forensic read-only operation; it does not modify evidence.
  • Verification failure does not imply intentional tampering; check for accidental overwrites, encoding changes (e.g., video transcoding), or filesystem timestamp updates.
  • For large evidence sets, verification may take several minutes; inform user.
  • OpenTimestamps verification requires the .ots files to be present alongside originals.

When not to use it

  • When the task is not about verifying evidence integrity
  • When the task involves modifying evidence
  • When OpenTimestamps verification is not required

Limitations

  • This is a forensic read-only operation; it does not modify evidence
  • Verification failure does not imply intentional tampering
  • OpenTimestamps verification requires the .ots files to be present alongside originals

How it compares

This skill automates the forensic verification of digital evidence using hashing and OpenTimestamps, providing a structured integrity check beyond simple file comparisons.

Compared to similar skills

verify-bundle side by side with the closest alternatives in the catalog.

SkillInstallsUpdatedSafetyDifficulty
verify-bundle (this skill)03moNo flagsIntermediate
reverse-engineering-tools734moNo flagsAdvanced
game-hacking-techniques422moNo flagsAdvanced
solidity-security152moNo flagsIntermediate

Try saying

Example prompts that trigger this skill in your AI assistant.

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