{
  "schemaVersion": 1,
  "network": "ethereum-mainnet",
  "chainId": "0x1",
  "checkedAt": "2026-08-30T17:41:37.075Z",
  "readOnly": true,
  "containsRawBlobBytes": false,
  "externalWallet": false,
  "signatureRequested": false,
  "transactionBroadcast": false,
  "assetMoved": false,
  "sources": {
    "executionPrimary": "https://ethereum-rpc.publicnode.com",
    "executionCrosscheck": "https://rpc.flashbots.net",
    "beaconPrimary": "https://ethereum-beacon-api.publicnode.com",
    "beaconCrosscheck": "https://lodestar-mainnet.chainsafe.io",
    "sourceRepositories": {
      "ethereumEips": "889f8c1e26e9b418f83721083098ca225b14fc0b",
      "ethereumOrg": "54ecc7204107ebe4f8e85e541233bff3186835aa",
      "consensusSpecs": "3434cc69d695604ea52253e31486f46ba0e36901",
      "executionSpecs": "c4deda5b3cfc5c1c8429dcd9159a6fb5636d8486",
      "optimismSpecs": "f8c143b3a410609566af0e88ee3f747ec9d86fa6",
      "superchainRegistry": "52037bfea66a6b923b0d52994a3d5294634db6e5"
    }
  },
  "protocol": {
    "fusaka": {
      "status": "activated",
      "epoch": 411392,
      "slot": 13164544,
      "activationTime": 1764798551,
      "activationIso": "2025-12-03T21:49:11.000Z"
    },
    "blobParameterOnlyForks": [
      {
        "name": "BPO1",
        "status": "activated",
        "epoch": 412672,
        "slot": 13205504,
        "activationTime": 1765290071,
        "activationIso": "2025-12-09T14:21:11.000Z",
        "targetBlobsPerBlock": 10,
        "maxBlobsPerBlock": 15
      },
      {
        "name": "BPO2",
        "status": "activated",
        "epoch": 419072,
        "slot": 13410304,
        "activationTime": 1767747671,
        "activationIso": "2026-01-07T01:01:11.000Z",
        "targetBlobsPerBlock": 14,
        "maxBlobsPerBlock": 21
      }
    ],
    "ethConfigSnapshot": {
      "checkedAt": "2026-08-30T17:41:37.075Z",
      "current": {
        "activationTime": 1767747671,
        "chainId": "0x1",
        "forkId": "0x07c9462e",
        "blobSchedule": {
          "target": 14,
          "max": 21,
          "baseFeeUpdateFraction": 11684671
        }
      },
      "next": null,
      "last": null,
      "interpretation": "authoring-time provider snapshot; next:null is not a promise that no future fork will activate"
    },
    "constants": {
      "fieldElementsPerBlob": 4096,
      "bytesPerBlob": 131072,
      "gasPerBlob": 131072,
      "dataColumns": 128,
      "minimumDataColumnRetentionEpochs": 4096,
      "versionedHashVersion": "0x01"
    }
  },
  "block": {
    "number": 25869397,
    "numberHex": "0x18abc55",
    "hash": "0x3f3d6d7a5aa24c81e066e2ff674e5df1b21ec18888fb66f61786e0dbb69c22ba",
    "parentHash": "0x05c77dbf2121e089fd0c7f302415100b5b89876cd1349388f2ff6b8de1ee1de0",
    "timestamp": 1788108671,
    "timestampHex": "0x6a945f7f",
    "timestampIso": "2026-08-30T16:51:11.000Z",
    "baseFeePerGasWei": "114005115",
    "baseFeePerGasHex": "0x6cb947b",
    "blobGasUsed": "2752512",
    "blobGasUsedHex": "0x2a0000",
    "excessBlobGas": "184161791",
    "excessBlobGasHex": "0xafa15ff",
    "blobCount": 21,
    "transactionCount": 509,
    "blobTransactions": [
      {
        "transactionIndex": 27,
        "hash": "0x62dbdea18b07a8d621dee4983621b93920c15e363bb100a0d2df489259617a8e",
        "blobCount": 1
      },
      {
        "transactionIndex": 46,
        "hash": "0x94dff4d56139f0286804297841f8bdc09154a1834464baeff5480b163b29c1a3",
        "blobCount": 5
      },
      {
        "transactionIndex": 306,
        "hash": "0xe2b242791aaffc5972922c6715d912a494a24433a379fd1c73ae6082ef607738",
        "blobCount": 3
      },
      {
        "transactionIndex": 314,
        "hash": "0x1ff263d42ef954be4e57a7a68aead6469b6bca7c236b902d8881e248dd2e63f8",
        "blobCount": 3
      },
      {
        "transactionIndex": 315,
        "hash": "0xdc22997d2157ca210bc3d71edf26de79c57e7df239a2e39185f3848d44a44cf5",
        "blobCount": 3
      },
      {
        "transactionIndex": 316,
        "hash": "0x5a42f1e9a456cc38f00b2938f3c656919b3ae8227cdc4af332f1bda06cd4acb1",
        "blobCount": 3
      },
      {
        "transactionIndex": 317,
        "hash": "0x9dc23760cc452dca62bb38906b5f45b2375e0f37081197cd582c51e7c01d81f4",
        "blobCount": 3
      }
    ],
    "beacon": {
      "slot": 15107054,
      "root": "0x1adb135df679e377348587ce272b9ac2af3f1b36eb57e75067f58d168036ee4e",
      "parentRoot": "0x5a39c30359142e9bfe2d33c0f8c2d8147f4afba654a4613495c0935206298826",
      "stateRoot": "0x1f3959fd2776db47fba89ac6521a2003180e12a2f89766eecf145e7068ea3d48",
      "bodyRoot": "0xc0aaadb59ff2abae3e1039868f18a6e28ae786922148c1339c7512db2642b0f1",
      "version": "fulu",
      "canonical": true,
      "finalized": true,
      "executionOptimistic": false
    }
  },
  "transaction": {
    "classification": "OP Mainnet batch submission",
    "hash": "0x94dff4d56139f0286804297841f8bdc09154a1834464baeff5480b163b29c1a3",
    "transactionIndex": 46,
    "transactionIndexHex": "0x2e",
    "type": 3,
    "typeHex": "0x3",
    "from": "0x6887246668a3b87f54deb3b94ba47a6f63f32985",
    "to": "0xff00000000000000000000000000000000000010",
    "registry": {
      "chain": "OP Mainnet",
      "chainId": 10,
      "batcher": "0x6887246668a3b87F54DeB3b94Ba47a6f63F32985",
      "batchInbox": "0xFF00000000000000000000000000000000000010",
      "dataAvailabilityType": "eth-da"
    },
    "maxFeePerBlobGasWei": "1000000000",
    "maxFeePerBlobGasHex": "0x3b9aca00",
    "blobCount": 5,
    "blobIndicesInBlock": [
      1,
      2,
      3,
      4,
      5
    ],
    "blobVersionedHashes": [
      "0x012b9a0fb22064a4b551374964e27fecffbcbfaafa8e240f09755a88ea5e74a6",
      "0x013061a7748be07162a0d52c4ce7069773486563dbcded9d74b2d12b7586296a",
      "0x013b21ab323978367e367d87bdbf85337687297e2de3bfb12ae07ac4a7b65aa2",
      "0x014760bf74d0129a56bf402230e5d4e5eb77b31a80c761c82662b0b5bd947ca4",
      "0x017c86cd452d7d31178f1f114f1655b55d8a473bb5f2e4350fc42fd08013e408"
    ]
  },
  "receipt": {
    "status": 1,
    "statusHex": "0x1",
    "gasUsed": "21000",
    "gasUsedHex": "0x5208",
    "effectiveGasPriceWei": "1114005115",
    "effectiveGasPriceHex": "0x42665e7b",
    "blobGasUsed": "655360",
    "blobGasUsedHex": "0xa0000",
    "blobGasPriceWei": "6996870",
    "blobGasPriceHex": "0x6ac386",
    "blockHash": "0x3f3d6d7a5aa24c81e066e2ff674e5df1b21ec18888fb66f61786e0dbb69c22ba",
    "blockNumberHex": "0x18abc55",
    "transactionIndexHex": "0x2e"
  },
  "feeCalculation": {
    "executionFormula": "gasUsed * effectiveGasPrice",
    "executionFeeWei": "23394107415000",
    "executionFeeEth": "0.000023394107415",
    "blobFormula": "blobGasUsed * blobGasPrice",
    "blobFeeWei": "4585468723200",
    "blobFeeEth": "0.0000045854687232",
    "totalFormula": "executionFee + blobFee",
    "totalFeeWei": "27979576138200",
    "totalFeeEth": "0.0000279795761382"
  },
  "sidecars": {
    "availableAtCheck": true,
    "checkedAt": "2026-08-30T17:41:37.075Z",
    "retentionLimited": true,
    "version": "fulu",
    "finalized": true,
    "executionOptimistic": false,
    "items": [
      {
        "index": 1,
        "blobBytes": 131072,
        "kzgCommitment": "0x92f4d8e258e428c7c3e1c6b3416dd0a03e017e33fa11ca283e1aa55071799c41c4ca06cfbcb99a857fc9de4735ee7539",
        "versionedHash": "0x012b9a0fb22064a4b551374964e27fecffbcbfaafa8e240f09755a88ea5e74a6"
      },
      {
        "index": 2,
        "blobBytes": 131072,
        "kzgCommitment": "0x966b6a2c8125cc1371c36dceb3cad8322350a982bf7715868b7953dffc4bacd196f059ec00ec169ff47c1db1c8c4ee85",
        "versionedHash": "0x013061a7748be07162a0d52c4ce7069773486563dbcded9d74b2d12b7586296a"
      },
      {
        "index": 3,
        "blobBytes": 131072,
        "kzgCommitment": "0x89f2baebcc9eb42ac103d1234022bd9816eba7180bedce679884dcffbaa71528660a56ca7e444a9f8a5a499e71b48030",
        "versionedHash": "0x013b21ab323978367e367d87bdbf85337687297e2de3bfb12ae07ac4a7b65aa2"
      },
      {
        "index": 4,
        "blobBytes": 131072,
        "kzgCommitment": "0xb6a11100d5ac7d2c2a5981ffdc5a6861e8dadebc5b64023c44d32fe55472b37dd37765b9cad179dbfa73c0502a321b1d",
        "versionedHash": "0x014760bf74d0129a56bf402230e5d4e5eb77b31a80c761c82662b0b5bd947ca4"
      },
      {
        "index": 5,
        "blobBytes": 131072,
        "kzgCommitment": "0xa3d9f8a835129dbe58850c400bea626164200f4ac59462083e9edb7785285f05c1bd8f289029b8c79027247f9fae4c8b",
        "versionedHash": "0x017c86cd452d7d31178f1f114f1655b55d8a473bb5f2e4350fc42fd08013e408"
      }
    ],
    "interpretation": "A full blob_sidecars response can be reconstructed or served by a supernode; it does not prove that every PeerDAS node stores every full blob."
  },
  "crosschecks": {
    "execution": [
      "block hash",
      "block blobGasUsed",
      "receipt status",
      "receipt blobGasUsed",
      "receipt blobGasPrice"
    ],
    "beacon": [
      "slot",
      "canonical block root"
    ],
    "result": "matched"
  },
  "reproduction": {
    "script": "scripts/fetch-fusaka-blob-evidence.mjs",
    "offlineCommand": "node scripts/fetch-fusaka-blob-evidence.mjs",
    "networkCommand": "node scripts/fetch-fusaka-blob-evidence.mjs --fetch",
    "writeCommand": "node scripts/fetch-fusaka-blob-evidence.mjs --write",
    "networkMethods": [
      "eth_chainId",
      "eth_config",
      "eth_getBlockByNumber",
      "eth_getTransactionReceipt",
      "GET /eth/v1/beacon/headers/{slot}",
      "GET /eth/v1/beacon/blob_sidecars/{slot}?indices=1..5"
    ]
  },
  "limits": [
    "This is one finalized mainnet block and one OP Mainnet batch transaction, not a fee benchmark or an average.",
    "Historical blob sidecars are retention-limited and may be unavailable when the network command is run later.",
    "Current eth_config values can change after another fork or blob-parameter-only fork.",
    "A lower blob posting cost does not guarantee a lower L2 user fee because compression, L2 execution, operator policy, scalars, and demand also contribute.",
    "No wallet, signature, transaction broadcast, bridge, account, or asset was used."
  ]
}