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Streams Data Sources

Updated on
Feb 06, 2026

Overview​

Each stream payload contains two top-level fields:


  • metadata — an object containing metadata about the stream and batch.
  • data — the dataset itself. 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 Configuration Options​

You can control how metadata is delivered in your stream:


  • Header delivery: Metadata included in HTTP response headers
  • Body delivery: Metadata included in the response payload (shown above)
  • None: Metadata delivery disabled entirely

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

Stream Metadata Properties (once per batch)
PropertyTypeDescriptionExample
batch_end_rangeintegerEnding range of batches in a dataset19271294
batch_start_rangeintegerStarting range of batches in a dataset19271294
blocks_reorgednull or arrayblocks in the batch which are sent as a result of a reorgnull or [ 19271294 ]
datasetstringType of dataset"block"
end_rangeintegerEnding range of data capture200
keep_distance_from_tipintegerDistance from the tip0
networkstringRelevant blockchain network"ethereum-mainnet"
start_rangeintegerStarting range of data capture100
stream_idstringID of the stream"f6ad6459-b5ad-4183-b370-1c1388e47e83"
stream_namestringName associated with the metadata"stream test1"
stream_regionstringRegion of the stream"usa_east"

Payload Example​


{
  "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",
   "dataset": "block",
   "network": "ethereum-mainnet",
   "batch_start_range": 19271200,
   "batch_end_range": 19271294,
   "start_range": 100,
   "end_range": 200,
   "keep_distance_from_tip": 0,
   "stream_region": "usa_east",
   "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": "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",
              "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✅✅✅✅✅❌✅✅❌
Avalanche C-Chain✅✅✅✅✅❌✅✅❌
B3✅✅✅✅✅❌✅✅❌
Base✅✅✅✅✅✅✅✅✅
Bera✅✅✅✅✅✅✅✅✅
Bitcoin✅❌❌❌❌❌❌❌❌
Bitcoin Cash✅❌❌❌❌❌❌❌❌
Blast✅✅✅✅✅❌✅✅❌
BNB Smart Chain✅✅✅✅✅✅✅✅✅
Celo✅✅✅✅✅❌✅✅❌
Cyber✅✅✅✅✅❌✅✅❌
Ethereum✅✅✅✅✅✅✅✅✅
Fantom✅✅✅✅✅✅✅✅✅
Flow✅✅✅✅✅❌✅✅❌
Fraxtal (Select Access Chain)✅✅✅✅✅❌✅✅❌
Gnosis✅✅✅✅✅✅✅✅✅
Gravity✅✅✅✅✅❌✅✅❌
Hedera✅✅✅✅✅❌✅✅❌
Hemi✅✅✅✅✅❌✅✅❌
Hypercore✅❌❌❌❌❌❌❌❌
Hyperliquid EVM✅✅✅✅✅✅✅✅✅
Immutable zkEVM✅✅✅✅✅❌✅✅❌
Injective✅✅✅✅✅❌✅✅❌
Ink✅✅✅✅✅❌✅✅❌
Japan Open Chain✅✅✅✅✅❌✅✅❌
Kaia✅✅✅✅✅❌✅✅❌
Lens✅✅✅✅✅❌✅✅❌
Lisk (Select Access Chain)✅✅✅✅✅❌✅✅❌
Linea✅✅✅✅✅❌✅✅❌
Mantle✅✅✅✅✅❌✅✅❌
Mode (Select Access Chain)✅✅✅✅✅❌✅✅❌
Monad✅✅✅✅✅❌❌❌❌
Morph✅✅✅✅✅❌✅✅❌
Nomina✅✅✅✅✅❌✅✅❌
Optimism✅✅✅✅✅❌✅✅❌
Peaq✅✅✅✅✅❌✅✅❌
Plasma✅✅✅✅✅❌✅✅❌
Polygon✅✅✅✅✅✅✅✅✅
Polygon zkEVM✅✅✅✅✅✅✅✅✅
Redstone (Select Access Chain)✅✅✅✅✅❌✅✅❌
Sahara✅✅✅✅✅❌✅✅❌
Scroll✅✅✅✅✅❌✅✅❌
Sei✅✅✅✅✅❌✅✅❌
Solana✅❌❌✅ (with Programs)❌❌❌❌❌
Sonic✅✅✅✅✅✅✅✅✅
Stellar✅ (Ledger)❌❌❌❌❌❌❌❌
Soneium✅✅✅✅✅❌✅✅❌
Sophon✅✅✅✅✅❌✅✅❌
Story✅✅✅✅✅❌✅✅❌
Tempo✅✅✅✅✅✅✅✅✅
Tron✅✅✅✅✅❌❌❌❌
Unichain✅✅✅✅✅❌✅✅❌
Vana✅✅✅✅✅❌✅✅❌
Worldchain✅✅✅✅✅❌✅✅❌
Xai✅✅✅✅✅❌✅✅❌
XRP Ledger✅ (Ledger)❌❌❌❌❌❌❌❌
zkSync✅✅✅✅✅❌✅✅❌
Zora✅✅✅✅✅❌✅✅❌

Select Access Chains

Fraxtal, Lisk, Mode, and Redstone are Select Access Chains. These networks require a subscription to access. To learn more about Select Access Chains, check out this blog on Introducing Select Access Chains: Your Chain, Your Choice

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