Agent Identity & Delegation Chain Verifier

Note (dated 2026-08-04): a chain composes independent computations performed in an analytical order. No step's output is carried into the next step by the execution model; each step computes from its own declared inputs. This is true of every chain on this site, including chains whose per-step copy below reads as a data handoff.

Verifies the two most-cited emerging agent-identity primitives in sequence: a did:webvh DID log's hash-chain and update-key authorization, then an ACDC credential chain's SAID integrity and issuer-to-issuee edge linkage back to a stated root AID. Verify-only across both steps; neither tool operates witness/registry infrastructure.

OpenChainGraph · 2 Steps compliance mandate Hash-Anchored §4 chain_depth:2 Client-Side · Zero PII · Verify-Only

Chain Stages · 2 Steps

1 ROOT node

did:webvh DID Log Verifier art-284-did-webvh-log-verifier

did, current_version_id, and deactivated status establish which controller AID is currently authoritative before the delegation chain below is evaluated

MCP Call · verify_did_webvh_log

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "verify_did_webvh_log",
    "arguments": {}
  },
  "id": 1
}

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2 TERMINAL node

ACDC Delegation Chain Verifier art-285-acdc-delegation-chain-verifier

chain_depth, root_aid_matched, and said_failures/edge_failures form the final delegation-authority determination for the agent named in the leaf credential

MCP Call · verify_acdc_delegation_chain

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "verify_acdc_delegation_chain",
    "arguments": {}
  },
  "id": 1
}

Question: An agent presents a chained delegation for a payment scope. Does every hop verify, and does the chain root at the controller we issued? Run the AINumbers MCP tool `run_chain` with {"chain":"verify-agent-delegation"} and read `art-285-acdc-delegation-chain-verifier.valid`. Re-run with `inputs` for `art-285-acdc-delegation-chain-verifier`, reusing the values that result echoed, with `expected_root_aid` set to "EAlt-controller-AID-0000000000000000000000000". Compare the same field. Verify: call `verify_execution_hash` (https://mcp.ainumbers.co/mcp) with `claimed_hash` set to `composite_execution_hash` and the full `composite_artifact`. Ledger, for a human re-check: https://ledger.ainumbers.co/ PII rule: send synthetic or anonymised inputs only. The MCP server runs these kernels and logs no payloads. Chain page: https://ainumbers.co/chaingraph/chains/verify-agent-delegation.html

Agent Identity & Delegation Chain Verifier

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