Skip to main content

Streams Data Sources

Updated on
Apr 22, 2026

Overview​

Each stream delivery contains two top-level fields:


  • data — the dataset content. The shape of data depends on the selected dataset type and chain client's structure for the given data. We do not modify the structure of the underlying data.
  • metadata — an object containing metadata about the stream and the current batch.

Metadata is always included in every delivery:


  • HTTP headers: Metadata fields are sent as HTTP headers on every delivery request.
  • Payload body: Metadata is included as a metadata object in the JSON payload body.
  • Filter function: The full payload (including metadata) is passed to your filter function when one is configured.

Note: Metadata is sent once per batch, not per individual data record.

Stream Metadata Properties (once per batch)
PropertyTypeHeader NameDescriptionExample
batch_start_rangeintegerBatch-Start-RangeStarting block of the current batch19271200
batch_end_rangeintegerBatch-End-RangeEnding block of the current batch19271294
data_size_bytesintegerBatch-Data-Size-BytesTotal size of the raw data content in bytes48230
blocks_reorgedarray or nullBatch-Blocks-ReorgedBlock numbers in the batch delivered as a result of a chain reorganization. null in body when empty, [] in headers.null or [19271293, 19271294]
reorgsarray or nullBatch-ReorgsDetailed reorg info including block number, hash, and timestamp of the displaced block. null in body when empty, [] in headers.null or [{"block_number": 19271294, ...}]
datasetstringStream-DatasetType of dataset"block"
networkstringStream-NetworkBlockchain network"ethereum-mainnet"
start_rangeintegerStream-Start-RangeStarting range of data capture for the stream100
end_rangeintegerStream-End-RangeEnding range of data capture for the stream200
keep_distance_from_tipintegerStream-Keep-Distance-From-TipDistance from the chain tip0
stream_idstringStream-IdID of the stream"f6ad6459-b5ad-4183-b370-1c1388e47e83"
stream_namestringStream-NameName of the stream"stream test1"
stream_regionstringStream-RegionRegion of the stream"usa_east"

Payload Examples​


HTTP Headers:

Stream-Id: f6ad6459-b5ad-4183-b370-1c1388e47e83
Stream-Name: stream test1
Stream-Region: usa_east
Stream-Network: ethereum-mainnet
Stream-Dataset: block
Stream-Start-Range: 100
Stream-End-Range: 200
Stream-Keep-Distance-From-Tip: 0
Batch-Start-Range: 19271200
Batch-End-Range: 19271294
Batch-Data-Size-Bytes: 48230
Batch-Reorgs: []
Batch-Blocks-Reorged: []

Payload Body:

{
  "data": [
    // Dataset content structure varies by dataset type
    // and maintains the original format from the data source
  ],
  "metadata": {
    "stream_id": "f6ad6459-b5ad-4183-b370-1c1388e47e83",
    "stream_name": "stream test1",
    "stream_region": "usa_east",
    "network": "ethereum-mainnet",
    "dataset": "block",
    "start_range": 100,
    "end_range": 200,
    "keep_distance_from_tip": 0,
    "batch_start_range": 19271200,
    "batch_end_range": 19271294,
    "data_size_bytes": 48230,
    "reorgs": null,
    "blocks_reorged": null
  }
}

Data Schema Information
Select a blockchain type below to view the relevant data schemas and payload structures specific to that chain type. Each tab contains detailed information about supported dataset types and their JSON specifications.

Dataset Types (EVM)​

Block​

The data returned is an array of block objects as returned by eth_getBlockByNumber. The Block schema models the structure of individual blocks on a chain, including fields like hash, number, nonce, and other relevant block data.

Additionally, it supports configuration options for re-org handling and batch sizes, allowing for customized data management and retrieval.

Note: Please review the chain specific documentation for the RPC method indicated above for more details about that chain's expected payload shape.

JSON Spec
{
		"data": [
				{
						"gasUsed": "0xd0d11a",
						"hash": "0xd964c5deacbea3e3df775ad1ed49744882d95dbdd1ae058b813cece959676820",
						"number": "0x125d3e5",
						"parentHash": "0xf31bcd75d2bebfe97a9aabae5c644c8d137552d2be3d8ff9f01278624d911011",
						"timestamp": "0x65d2444f",
						"transactions": [
								{
										"blockHash": "0xd964c5deacbea3e3df775ad1ed49744882d95dbdd1ae058b813cece959676820",
										"blockNumber": "0x125d3e5",
						}],
						...
				}
		],	
		"metadata": {
			"dataset": "block",
			"end_range": -1,
			"network": "ethereum-mainnet",
			"stream_id": "f6ad6459-b5ad-4183-b370-1c1388e47e83",
			...
	}
}

Receipts​

The data returned is an array of arrays, each containing receipt objects as returned by eth_getBlockReceipts. The Receipts schema corresponds to transaction receipts, focusing solely on transactions and excluding block details. These receipts serve as proof of transaction execution, detailing outcomes and specifics like gas usage.

Note: Please review the chain specific documentation for the RPC method indicated above for more details about that chain's expected payload shape.

JSON Spec
{
  "data": [
    [
      {
        "blockHash": "0xd010dbc965455076441782aa97a7aa1f526fe9da73b9af6ad319b87e84703475",
        "blockNumber": "0x16263bb",
        "contractAddress": null,
        "cumulativeGasUsed": "0x5208",
        "effectiveGasPrice": "0x2646fc5db",
        "from": "0xab4f2fdca7521012edfee6e916778c6dae719bd3",
        "gasUsed": "0x5208",
        "logs": [],
        "logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
        "status": "0x1",
        "to": "0x82268e2cb7ac9ab32e3a99c68e5c13fbde1ae1f8",
        "transactionHash": "0xfd3b28c03c750477a8451aa0fd66dad27ed06065bdcd21b092ebecd14c12649b",
        "transactionIndex": "0x0",
        "type": "0x0"
      },
	  ...
	]
		"metadata": {
			"dataset": "block",
			"end_range": -1,
			"network": "ethereum-mainnet",
			"stream_id": "f6ad6459-b5ad-4183-b370-1c1388e47e83",
			...
	}
  ]
}

Block with Receipts​

The data returned is an array of objects containing a composite dataset with:


The Block with Receipts schema represents comprehensive details on individual blocks and their transaction receipts. These receipts contain details such as the transaction status (successful or failed), gas utilized, value transferred, logs generated, and more.

Note: Please review the chain specific documentation for the RPC method indicated above for more details about that chain's expected payload shape.

JSON Spec
{
  "data": [
    {
      "block": {
        "baseFeePerGas": "0xfd069ed",
        "blobGasUsed": "0x120000",
        "parentBeaconBlockRoot": "0x1a623c846de9af135b2bf3902e72dfb4d3922c6af5f2463af72080048c11f4bf",
        "parentHash": "0x590857a38b05fead84006130b330716de40d87d054266d2c2589fb6c4d7ac4b0",
        "size": "0x260c9",
        "stateRoot": "0x56f5424f549df97b940ceceaa17e7f606676bbf4951ba81e0e2cc41dcb59887e",
        "timestamp": "0x68ada7e3",
        "transactions": [
          {
            "blockHash": "0xd010dbc965455076441782aa97a7aa1f526fe9da73b9af6ad319b87e84703475",
            "blockNumber": "0x16263bb",
            "from": "0xab4f2fdca7521012edfee6e916778c6dae719bd3",
            "gas": "0x186a0",
			...
          },
		  ...
		]
	  }
	}
  ]
}

Logs​

The data returned is an array of arrays of log objects, as they appear within the logs array in transaction receipts. The Logs data schema corresponds to event logs generated by smart contract transactions, documenting significant events, function calls, or other relevant activities occurring within smart contracts. This data is associated with the eth_getLogs JSON-RPC method, providing insights on smart contract interactions per block.

Note: Please review the chain specific documentation for the RPC method indicated above for more details about that chain's expected payload shape.

JSON Spec
{
  "data": [
    [
      [
        {
          "address": "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
          "topics": [
            "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
            "0x000000000000000000000000d4bc53434c5e12cb41381a556c3c47e1a86e80e3",
            "0x00000000000000000000000011b815efb8f581194ae79006d24e0d814b7697f6"
          ],
          "data": "0x0000000000000000000000000000000000000000000000144cb0059dd91ec491",
          "blockNumber": "0x16263be",
          "transactionHash": "0x4cda2112bfb02ff07b3a88eced7e5f972ea2827bdcab448ae07d6330d62b30a2",
          "transactionIndex": "0x0",
          "blockHash": "0xb0587a2035660384c0a2f31bc2977f2dc60408618f67be97149d14b5fbc0741b",
          "logIndex": "0x0",
          "removed": false
        },
		...
	  ]
	]
  ]
}

Transactions​

The data returned is an array of arrays of transaction objects, as they appear in the transactions array of block data. The Transactions data schema narrows data down to focus on transaction details, similar to each transaction object you would get when using the eth_getTransactionByHash method. It utilizes transaction hashes, returned from a method like eth_getBlockByNumber, to loop over each transaction hash and return its transaction object. This makes it easy to look up detailed transaction information.

Note: Please review the chain specific documentation for the RPC method indicated above for more details about that chain's expected payload shape.

JSON Spec
{
  "data": [
    [
      {
        "blockHash": "0xb0587a2035660384c0a2f31bc2977f2dc60408618f67be97149d14b5fbc0741b",
        "blockNumber": "0x16263be",
        "from": "0xd1fa51f2db23a9fa9d7bb8437b89fb2e70c60cb7",
        "gas": "0x62b01",
        "gasPrice": "0x121f68f4",
        "accessList": [
          {
            "address": "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
            "storageKeys": [
              "0x4407b7e3a4d56c18eef645ef52b0e5371965ec86a7c46343194da25177be0647",
              "0x0cb865ff1951c90111975d77bc75fa8312f25b08bb19b908f6b9c43691ac0caf"
            ]
          },
		]
		...
	  }
	]
  ]
}

Traces (debug_traceBlock)​

The data returned is an array of arrays of trace data as returned by debug_traceBlock. The Traces (debug_trace) data source provides a granular, step-by-step look at transaction executions, including internal calls and state changes, which is critical for debugging and optimizing smart contracts.

Note: Please review the chain specific documentation for the RPC method indicated above for more details about that chain's expected payload shape.

JSON Spec
{
  "data": [
    [
      {
        "txHash": "0x4cda2112bfb02ff07b3a88eced7e5f972ea2827bdcab448ae07d6330d62b30a2",
        "result": {
          "from": "0xd1fa51f2db23a9fa9d7bb8437b89fb2e70c60cb7",
          "gas": "0x62b01",
          "gasUsed": "0x4514e",
          "to": "0xd4bc53434c5e12cb41381a556c3c47e1a86e80e3",
          "input": "0x2b8e11b815efb8f581194ae79006d24e0d814b7697f6c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2dac17f958d2ee523a2206206994597c13d831ec701f4fd107afd10847b040a9b58b8144cb0ffd8bf95feff06",
          "calls": [
            {
              "from": "0xd4bc53434c5e12cb41381a556c3c47e1a86e80e3",
              "gas": "0x4d23e",
              "gasUsed": "0x30ba3",
              "to": "0x11b815efb8f581194ae79006d24e0d814b7697f6",
              "input": "0x3c8a7d8d000000000000000000000000d4bc53434c5e12cb41381a556c3c47e1a86e80e3fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffd107afffffffffffffffffffffffffffffffffffffffffffffffffffffffffffd10840000000000000000000000000000000000000000000000040a9b58000000000000000000000000000000000000000000000000000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000062000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2000000000000000000000000dac17f958d2ee523a2206206994597c13d831ec700000000000000000000000000000000000000000000000000000000000001f41af0",
              "output": "0x0000000000000000000000000000000000000000000000144cb0059dd91ec491000000000000000000000000000000000000000000000000000000bf95fe129e",
              "calls": [
                {
                  "from": "0x11b815efb8f581194ae79006d24e0d814b7697f6",
                  "gas": "0x233a2",
                  "gasUsed": "0x216",
                  "to": "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
                  "input": "0x70a0823100000000000000000000000011b815efb8f581194ae79006d24e0d814b7697f6",
                  "output": "0x000000000000000000000000000000000000000000000080345e162ea2af791c",
                  "type": "STATICCALL"
                },
				...
			  ]
			}
			...
		  ]
		}
	  }
	]
  ]
}

Traces (trace_block)​

The data returned is an array of arrays of trace data as returned by trace_block. The Traces (trace_block) data source provides a granular, step-by-step look at transaction executions, including internal calls and state changes, which is critical for debugging and optimizing smart contracts. This data source is based off the trace_block and trace_transaction RPC methods and is served by Erigon blockchain node clients.

Note: Please review the chain specific documentation for the RPC method indicated above for more details about that chain's expected payload shape.

JSON Spec
{
  "data": [
    [
      {
        "action": {
          "from": "0xd1fa51f2db23a9fa9d7bb8437b89fb2e70c60cb7",
          "callType": "call",
          "gas": "0x4e7a9",
          "input": "0x2b8e11b815efb8f581194ae79006d24e0d814b7697f6c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2dac17f958d2ee523a2206206994597c13d831ec701f4fd107afd10847b040a9b58b8144cb0ffd8bf95feff06",
          "to": "0xd4bc53434c5e12cb41381a556c3c47e1a86e80e3",
          "value": "0x7"
        },
        "blockHash": "0xb0587a2035660384c0a2f31bc2977f2dc60408618f67be97149d14b5fbc0741b",
        "blockNumber": 23225278,
        "result": {
          "gasUsed": "0x30df6",
          "output": "0x"
        },
        "subtraces": 1,
        "traceAddress": [],
        "transactionHash": "0x4cda2112bfb02ff07b3a88eced7e5f972ea2827bdcab448ae07d6330d62b30a2",
        "transactionPosition": 0,
        "type": "call"
      },
	  ...
	]
  ]
}

Block with Receipts + debug_traces​

The data returned is an array of objects containing a composite dataset with:


  • block
  • receipts
  • traces (from debug_traceBlock)

If you want to retrieve an all-in-one data source for backfilling historical blockchain data, a data schema like Block with Receipts and debug_trace can retrieve block and transaction receipts, along with step-by-step transaction execution traces and internal transactions. This data source uses the eth_getBlockByNumber, eth_getBlockReceipts, and debug_traceBlock RPC methods.

Note: Please review the chain specific documentation for the RPC method indicated above for more details about that chain's expected payload shape.

JSON Spec
{
  "data": [
    [
      {
        "action": {
          "from": "0xd1fa51f2db23a9fa9d7bb8437b89fb2e70c60cb7",
          "callType": "call",
          "gas": "0x4e7a9",
          "input": "0x2b8e11b815efb8f581194ae79006d24e0d814b7697f6c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2dac17f958d2ee523a2206206994597c13d831ec701f4fd107afd10847b040a9b58b8144cb0ffd8bf95feff06",
          "to": "0xd4bc53434c5e12cb41381a556c3c47e1a86e80e3",
          "value": "0x7"
        },
        "blockHash": "0xb0587a2035660384c0a2f31bc2977f2dc60408618f67be97149d14b5fbc0741b",
        "blockNumber": 23225278,
        "result": {
          "gasUsed": "0x30df6",
          "output": "0x"
        },
        "subtraces": 1,
        "traceAddress": [],
        "transactionHash": "0x4cda2112bfb02ff07b3a88eced7e5f972ea2827bdcab448ae07d6330d62b30a2",
        "transactionPosition": 0,
        "type": "call"
      },
	  ...
	]
  ]
}

Block with Receipts + trace_block​

The data returned is an array of objects containing a composite dataset with:


  • block
  • receipts
  • traces (from trace_block)

NOTE: This data source is an alternative to the Block with Receipts & debug_trace schema above. It utilizes the trace_transaction RPC method from Erigon, instead of using the debug API from Geth.

If you want to backfill historical blockchain data, a data schema like Block with Receipts and trace_block, is one solution. This data source uses the trace_transaction RPC method to retrieve transaction execution traces and internal transactions along with block and transaction receipt information using eth_getBlockByNumber, eth_getBlockReceipts RPC methods.

Note: Please review the chain specific documentation for the RPC method indicated above for more details about that chain's expected payload shape.

JSON Spec
{
  "data": [
    {
      "block": {
        "baseFeePerGas": "0x11d38b33",
        "blobGasUsed": "0xa0000",
        "difficulty": "0x0",
        "excessBlobGas": "0x100000",
        "extraData": "0x4275696c6465724e65742028466c617368626f747329",
        "gasLimit": "0x2aea515",
		...
        "transactions": [
          {
            "blockHash": "0xda7dc0d852bf5fb4d512a4cd57d341ac908794851ce0b7f169f9963c851bb385",
            "blockNumber": "0x16263c0",
            "from": "0xae2fc483527b8ef99eb5d9b44875f005ba1fae13",
            "gas": "0x453e74",
            "gasPrice": "0x11d38b33",
            "hash": "0x7d3220bd6b43886a3d30262c5b5e5366a16d0597f417e3010bea0a478a3e12e5",
			...
            "accessList": [
              {
                "address": "0x041db0b7aa2237c33ea836ad12c3ee8d0afd5e4d",
                "storageKeys": [
                  "0x000000000000000000000000000000000000000000000000000000000000000e",
                  "0x000000000000000000000000000000000000000000000000000000000000000f",
				  ...
                ]
              },
              {
                "address": "0x40aabef1aa8f0eec637e0e7d92fbffb2f26a8b7b",
                "storageKeys": [
                  "0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc",
                  "0x000000000000000000000000000000000000000000000000000000000000003a",
				   ...
                ]
              },
			  ...
			]
		  }
		...
	  }
	}
  ]
}

Supported Chains​

ChainBlockBlock with ReceiptsTransactionsLogsReceiptsTraces (trace_block)Traces (debug_trace)Block with Receipts + debug_traceBlock with Receipts + trace_block
0g✅✅✅✅✅❌✅✅❌
Abstract✅✅✅✅✅❌✅✅❌
Arbitrum✅✅✅✅✅❌✅✅❌
Arbitrum Nova✅✅✅✅✅❌✅✅❌
Arc✅✅✅✅✅✅✅✅✅
Ault✅✅✅✅✅❌✅✅❌
Avalanche C-Chain✅✅✅✅✅❌✅✅❌
B3✅✅✅✅✅❌✅✅❌
Base✅✅✅✅✅✅✅✅✅
Bera✅✅✅✅✅✅✅✅✅
Bitcoin✅❌❌❌❌❌❌❌❌
Bitcoin Cash✅❌❌❌❌❌❌❌❌
Blast✅✅✅✅✅❌✅✅❌
BNB Smart Chain✅✅✅✅✅✅✅✅✅
Celo✅✅✅✅✅❌✅✅❌
Cyber✅✅✅✅✅❌✅✅❌
Dogecoin✅❌❌❌❌❌❌❌❌
Ethereum✅✅✅✅✅✅✅✅✅
Fantom✅✅✅✅✅✅✅✅✅
Flare✅✅✅✅✅❌✅✅❌
Flow✅✅✅✅✅❌✅✅❌
Fluent✅✅✅✅✅❌✅✅❌
Fraxtal✅✅✅✅✅❌✅✅❌
Gnosis✅✅✅✅✅✅✅✅✅
Gravity✅✅✅✅✅❌✅✅❌
Hedera✅✅✅✅✅❌✅✅❌
Hemi✅✅✅✅✅❌✅✅❌
Hyperliquid Hypercore✅❌❌❌❌❌❌❌❌
Hyperliquid EVM✅✅✅✅✅✅✅✅✅
Immutable zkEVM✅✅✅✅✅❌✅✅❌
Injective✅✅✅✅✅❌✅✅❌
Ink✅✅✅✅✅❌✅✅❌
Japan Open Chain✅✅✅✅✅❌✅✅❌
Kaia✅✅✅✅✅❌✅✅❌
Katana✅✅✅✅✅❌✅✅❌
Lens✅✅✅✅✅❌✅✅❌
Linea✅✅✅✅✅❌✅✅❌
Lisk✅✅✅✅✅❌✅✅❌
Litecoin✅❌❌❌❌❌❌❌❌
Mantle✅✅✅✅✅❌✅✅❌
MegaETH✅✅✅✅✅✅✅✅✅
Moca✅✅✅✅✅❌❌❌❌
Mode✅✅✅✅✅❌✅✅❌
Monad✅✅✅✅✅❌✅✅❌
Morph✅✅✅✅✅❌✅✅❌
Optimism✅✅✅✅✅❌✅✅❌
Peaq✅✅✅✅✅❌❌❌❌
Plasma✅✅✅✅✅❌✅✅❌
Polygon✅✅✅✅✅✅✅✅✅
Polygon zkEVM✅✅✅✅✅✅✅✅✅
Robinhood✅✅✅✅✅❌✅✅❌
Sahara✅✅✅✅✅❌✅✅❌
Scroll✅✅✅✅✅❌✅✅❌
Sei✅✅✅✅✅❌✅✅❌
Solana✅❌❌✅ (with Programs)❌❌❌❌❌
Soneium✅✅✅✅✅❌✅✅❌
Sonic✅✅✅✅✅✅✅✅✅
Sophon✅✅✅✅✅❌✅✅❌
Stellar✅ (Ledger)❌❌❌❌❌❌❌❌
Story✅✅✅✅✅❌✅✅❌
Tempo✅✅✅✅✅✅✅✅✅
Tron✅✅✅✅✅❌❌❌❌
Unichain✅✅✅✅✅❌✅✅❌
Vana✅✅✅✅✅❌✅✅❌
Worldchain✅✅✅✅✅❌✅✅❌
X Layer✅✅✅✅✅✅✅✅✅
Xai✅✅✅✅✅❌✅✅❌
XRP Ledger✅ (Ledger)❌❌❌❌❌❌❌❌
XRPL EVM✅✅✅✅✅❌❌❌❌
zkSync✅✅✅✅✅❌✅✅❌
Zora✅✅✅✅✅❌❌❌❌

We ❤️ Feedback!​

If you have any feedback or questions about this documentation, let us know. We'd love to hear from you!

Last updated on
Share this doc