Token event inside a router

Receipt evidence does not establish attribution for the nested application.

Synthetic evidence

Base Sepolia

Modeled transactions and receipts demonstrate the analyzer. These hashes are not claims of existing network transactions.

Application readiness: Not tested. Runtime qualification: Not qualified.

Capture time, blocks, and selection

Supplied scope: 1 supplied hashes · 1 unique
Modeled block: 123
Capture time (UTC): 2026-09-29T12:00:00.000Z
Selection: Synthetic direct transfer fixture; no network observation.

Read each result separately

B20 evidence: 0 eligible direct calls · 0 factory observations · 1 event-only transactions
Expected Builder Code: bc_example
All input attribution: 1/1 (100%)
Supported direct-call attribution: Not measured
Execution: 1 successful · 0 reverted · 0 pending · 0 unavailable
Unresolved evidence: 0 transactions · run complete
Application readiness: Not tested
Runtime qualification: Not qualified

Coverage applies to the supplied hashes. A zero denominator means “Not measured.” The producer’s observe decision is pass; this page has not evaluated strict policy with fresh RPC evidence.

Transaction evidence

Receipt event only

0x11111111…11111111success · Expected code foundDetails

0x1111111111111111111111111111111111111111111111111111111111111111

Attribution · top-level transaction: Expected code found · bc_example
Execution: success
Direct coverage: Excluded: required direct-call scope or evidence is unresolved

The receipt includes a B20 event. Attribution for the responsible nested application is not established.

Diagnostics

B20_NESTED_ATTRIBUTION_NOT_ESTABLISHED

Token findings

0xb200000000000000000000111111111111111111Initialized B20 token · factory-query

Decoded receipt events (1)

[
  {
    "token": "0xb200000000000000000000111111111111111111",
    "logIndex": "0",
    "metadata": null,
    "event": "Transfer",
    "from": "0x2222222222222222222222222222222222222222",
    "to": "0x3333333333333333333333333333333333333333",
    "amount": "79228162514264337593543950337",
    "memo": null
  }
]

Supporting transaction, receipt, block, and token reads

{
  "hash": "0x1111111111111111111111111111111111111111111111111111111111111111",
  "transaction": {
    "hash": "0x1111111111111111111111111111111111111111111111111111111111111111",
    "from": "0x2222222222222222222222222222222222222222",
    "to": "0x4444444444444444444444444444444444444444",
    "input": "0xa9059cbb0000000000000000000000003333333333333333333333333333333333333333000000000000000000000000000000000000000100000000000000000000000162635f6578616d706c650a0080218021802180218021802180218021",
    "blockHash": "0xabababababababababababababababababababababababababababababababab",
    "blockNumber": "123",
    "transactionIndex": "1"
  },
  "receipt": {
    "transactionHash": "0x1111111111111111111111111111111111111111111111111111111111111111",
    "transactionIndex": "1",
    "blockHash": "0xabababababababababababababababababababababababababababababababab",
    "blockNumber": "123",
    "status": "success",
    "logs": [
      {
        "address": "0xb200000000000000000000111111111111111111",
        "topics": [
          "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
          "0x0000000000000000000000002222222222222222222222222222222222222222",
          "0x0000000000000000000000003333333333333333333333333333333333333333"
        ],
        "data": "0x0000000000000000000000000000000000000001000000000000000000000001",
        "logIndex": "0",
        "removed": false,
        "transactionHash": "0x1111111111111111111111111111111111111111111111111111111111111111",
        "transactionIndex": "1",
        "blockHash": "0xabababababababababababababababababababababababababababababababab",
        "blockNumber": "123"
      }
    ]
  },
  "block": {
    "number": "123",
    "hash": "0xabababababababababababababababababababababababababababababababab",
    "timestamp": "1790683200",
    "statePosition": "end-of-block"
  },
  "blockAfter": {
    "number": "123",
    "hash": "0xabababababababababababababababababababababababababababababababab",
    "timestamp": "1790683200",
    "statePosition": "end-of-block"
  },
  "tokens": [
    {
      "kind": "bao.b20-inspection-capture",
      "schemaVersion": 1,
      "chainId": 84532,
      "address": "0xb200000000000000000000111111111111111111",
      "protocolProfileId": "base-std-1505323-inspect-v1",
      "protocolSourceDigest": "0xf94bc2a2d18330180dfc1a22e0c586c608791524946a22f1b22f871a49bc4d4d",
      "acquisition": "synthetic",
      "capturedAt": "2026-09-29T12:00:00.000Z",
      "requestedBlock": "123",
      "chainResponse": "0x14a34",
      "block": {
        "number": "123",
        "hash": "0xabababababababababababababababababababababababababababababababab",
        "timestamp": "1790683200",
        "statePosition": "end-of-block"
      },
      "blockAfter": {
        "number": "123",
        "hash": "0xabababababababababababababababababababababababababababababababab",
        "timestamp": "1790683200",
        "statePosition": "end-of-block"
      },
      "initialization": {
        "id": "initialization",
        "method": "eth_call",
        "request": {
          "to": "0xb20f000000000000000000000000000000000000",
          "data": "0x6a45ba98000000000000000000000000b200000000000000000000111111111111111111",
          "block": {
            "blockHash": "0xabababababababababababababababababababababababababababababababab",
            "requireCanonical": true
          }
        },
        "result": {
          "status": "returned",
          "data": "0x0000000000000000000000000000000000000000000000000000000000000001"
        }
      }
    }
  ],
  "error": null
}

Download and reproduce this report

Download report JSON Download capture JSON

bao b20 verify --input b20-router-event-only.report.json --offline
bao b20 replay --input b20-router-event-only.capture.json --chain-id 84532 --expect bc_example --offline

Offline validation checks internal consistency. Imported acquisition and policy remain producer claims. Read the collection and recheck guide.

Protocol profile: base-std-1505323-replay-v1
Evidence digest: 0x3ea67868bdf1743abaaa763bb5ed8f6780e893d39242808953633c01e8bba58a
Pinned source: base/base-std source

Scope and limitations

Coverage describes only the explicitly supplied transaction set; producer-declared completeness is not independently established.
Builder-Code-filtered selection cannot measure omitted attribution outside the supplied set.
Token reads describe end-of-block state. Reverted calls without earlier creation evidence remain unresolved at transaction time.
Receipt events in routers or batches do not establish attribution for a nested application or UserOperation.
Acquisition and policy in an imported artifact are producer claims. Offline validation cannot grant current-run RPC authority.
Application readiness, deployment activation, consensus proofs, ownership, and reward eligibility are not tested.