OpenChainGraph Suite · ART-200 · IP Licensing & Tokenization

License Election Verifier

Verifies a certificate produced by the License Election Certifier (ART-199). Recomputes the SHA-256 terms_hash over the JCS-canonical election core and compares it against the stored hash. Returns verdict, binding_ok flag, recomputed hash, and per-check results.

Cryptographic Mandate JCS SHA-256 Verify Tamper Detection Selection Only
🔒 All inputs are processed locally in your browser. No data is transmitted. Do not enter real personal data — use synthetic or anonymised inputs only.
⚠ This tool verifies the cryptographic integrity of a license election certificate. A passing result confirms the certificate fields are internally consistent and have not been tampered with. It does not guarantee the license is valid, applicable, or legally enforceable. Not legal advice.
Presets:
Paste the certificate object from ART-199 output. Must contain certificate_version, asset_ref, licensor_did, license_election, and terms_hash.
Verification Result
Hash Comparison
Stored terms_hash:
Recomputed terms_hash:
Per-Check Results
Execution Hash (SHA-256)
Compliance Flags







  

    
Ask your agent

    
  

  
Copy this paragraph into Claude, OpenClaw, or any MCP-aware agent to run this exact tool, with this sample, and verify the artifact.

  
Run the AINumbers MCP tool `verify_license_election`. Task: Verify a certificate produced by the License Election Certifier by recomputing the SHA-256 terms_hash over the JCS-canonical election core and comparing it against the stored hash.
Call it with arguments: {"policy_parameters":{}}
Verify before trusting: call `verify_execution_hash` on mcp.ainumbers.co (https://mcp.ainumbers.co/mcp) with the parameter `claimed_hash` set to the returned `execution_hash`, passing the full artifact the run returned (the object containing `policy_parameters` + `output_payload` + `execution_hash`; equivalently `policy_parameters` + `output_payload` with `claimed_hash`), not the bare hash string.
Return the ledger link https://ledger.ainumbers.co/ so a human can re-verify without contacting us.
PII rule: All inputs are processed locally in your browser. No data is transmitted. Do not enter real personal data — use synthetic or anonymised inputs only.
Open the tool with the sample prefilled: https://ainumbers.co/chaingraph/art-200-license-election-verifier.html#p=v1.H4sIAAAAAAAA_wECAP3_e31Dv6ajAgAAAA