OpenChainGraph Suite · ART-194 · Client-Side Conversions

Digest Manifest Builder

Drop files to hash their bytes locally with SHA-256, then bind N digests into one canonical, hash-anchored manifest. The manifest_sha256 is computed over the JCS-canonical, deterministically sorted entries array. Feeds art-191. Zero network.

SHA-256 Canonical Manifest Client-Side Zero PII W3C VC §13.11 v0.6.0
🔒 All inputs are processed locally in your browser. No data is transmitted. Do not enter real personal data — use synthetic or anonymised inputs only.
Scope
Binds N file digests into one canonical, hash-anchored manifest. This BUILDS flat manifests (no tree), which is distinct from verify_merkle_batch (cry-04), which verifies Merkle PROOFS. BrowserChain's log owns Merkle trees. Files are hashed byte-for-byte in your browser; only the digests, sizes, and media types enter the manifest.
Files
Drop files here, or click to choose. Each file is hashed locally with SHA-256; bytes never leave the page.
Manual entry
Entries (0)
Manifest parameters
Manifest
Manifest preview

      

        
        
        
        
        
      

      
    

  


  
  







  

    
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 `build_digest_manifest`. Task: Bind N file digests into one canonical, hash-anchored manifest.
Call it with arguments: {"policy_parameters":{"entries":[{"name":"report.pdf","sha256":"bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb","bytes":10240,"media_type":"application/pdf"},{"name":"data.csv","sha256":"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","bytes":512,"media_type":"text/csv"}],"purpose":"release-bundle","sort":"name"}}
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-194-digest-manifest-builder.html#p=v1.H4sIAAAAAAAA_wFJAbb-eyJlbnRyaWVzIjpbeyJuYW1lIjoicmVwb3J0LnBkZiIsInNoYTI1NiI6ImJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmIiLCJieXRlcyI6MTAyNDAsIm1lZGlhX3R5cGUiOiJhcHBsaWNhdGlvbi9wZGYifSx7Im5hbWUiOiJkYXRhLmNzdiIsInNoYTI1NiI6ImFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWEiLCJieXRlcyI6NTEyLCJtZWRpYV90eXBlIjoidGV4dC9jc3YifV0sInB1cnBvc2UiOiJyZWxlYXNlLWJ1bmRsZSIsInNvcnQiOiJuYW1lIn3QOlSJSQEAAA