Geth/Parity Proxy

For the full documentation of available parameters and descriptions, please visit the official Ethereum JSON-RPC docs.

For compatibility with Parity, please prefix all hex strings with " 0x ".

eth_blockNumber

Returns the number of most recent block

https://api.kromascan.com/api
   ?module=proxy
   &action=eth_blockNumber
   &apikey=YourApiKeyToken

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Request

No parameters required.

Response

Sample response

{
   "jsonrpc":"2.0",
   "id":83,
   "result":"0xc36b29"
}

eth_getBlockByNumber

Returns information about a block by block number.

https://api.kromascan.com/api
   ?module=proxy
   &action=eth_getBlockByNumber
   &tag=0x10d4f
   &boolean=true
   &apikey=YourApiKeyToken

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Request

Query Parameters

Parameter	Description
tag	the block number, in hex eg. 0xC36B3C
boolean	the boolean value to show full transaction objects. when true, returns full transaction objects and their information, when false only returns a list of transactions.

Response

Sample response

{
   "jsonrpc":"2.0",
   "id":1,
   "result":{
      "baseFeePerGas":"0x5cfe76044",
      "difficulty":"0x1b4ac252b8a531",
      "extraData":"0xd883010a06846765746888676f312e31362e36856c696e7578",
      "gasLimit":"0x1caa87b",
      "gasUsed":"0x5f036a",
      "hash":"0x396288e0ad6690159d56b5502a172d54baea649698b4d7af2393cf5d98bf1bb3",
      "logsBloom":"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",
      "miner":"0x5a0b54d5dc17e0aadc383d2db43b0a0d3e029c4c",
      "mixHash":"0xc547c797fb85c788ecfd4f5d24651bddf15805acbaad2c74b96b0b2a2317e66c",
      "nonce":"0x04a99df972bd8412",
      "number":"0xc63251",
      "parentHash":"0xbb2d43395f93dab5c424421be22d874f8c677e3f466dc993c218fa2cd90ef120",
      "receiptsRoot":"0x3de3b59d208e0fd441b6a2b3b1c814a2929f5a2d3016716465d320b4d48cc1e5",
      "sha3Uncles":"0xee2e81479a983dd3d583ab89ec7098f809f74485e3849afb58c2ea8e64dd0930",
      "size":"0x6cb6",
      "stateRoot":"0x60fdb78b92f0e621049e0aed52957971e226a11337f633856d8b953a56399510",
      "timestamp":"0x6110bab2",
      "totalDifficulty":"0x612789b0aba90e580f8",
      "transactions":[
         "0x40330c87750aa1ba1908a787b9a42d0828e53d73100ef61ae8a4d925329587b5",
         "0x6fa2208790f1154b81fc805dd7565679d8a8cc26112812ba1767e1af44c35dd4",
         "0xe31d8a1f28d4ba5a794e877d65f83032e3393809686f53fa805383ab5c2d3a3c",
         "0xa6a83df3ca7b01c5138ec05be48ff52c7293ba60c839daa55613f6f1c41fdace",
         "0x4e46edeb68a62dde4ed081fae5efffc1fb5f84957b5b3b558cdf2aa5c2621e17",
         "0x356ee444241ae2bb4ce9f77cdbf98cda9ffd6da244217f55465716300c425e82",
         "0x1a4ec2019a3f8b1934069fceff431e1370dcc13f7b2561fe0550cc50ab5f4bbc",
         "0xad7994bc966aed17be5d0b6252babef3f56e0b3f35833e9ac414b45ed80dac93"
      ],
      "transactionsRoot":"0xaceb14fcf363e67d6cdcec0d7808091b764b4428f5fd7e25fb18d222898ef779",
      "uncles":[
         "0x9e8622c7bf742bdeaf96c700c07151c1203edaf17a38ea8315b658c2e6d873cd"
      ]
   }
}

eth_getBlockTransactionCountByNumber

Returns the number of transactions in a block.

https://api.kromascan.com/api
   ?module=proxy
   &action=eth_getBlockTransactionCountByNumber
   &tag=0x10FB78
   &apikey=YourApiKeyToken

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Request

Query Parameters

Parameter	Description
tag	the block number, in hex eg. 0x10FB78

Response

Sample response

{
   "jsonrpc":"2.0",
   "id":1,
   "result":"0x1"
}

eth_getTransactionByHash

Returns the information about a transaction requested by transaction hash.

https://api.kromascan.com/api
   ?module=proxy
   &action=eth_getTransactionByHash
   &txhash=0xb971101419ff4a56420f6e8a689f6017388790c2e2b2bafea994a3d9afba0589
   &apikey=YourApiKeyToken

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Request

Query Parameters

Parameter	Description
txhash	the string representing the hash of the transaction

Response

Sample Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "blockHash": "0x08f7bd2944b5bac8dcbd84f21af458a24f979c0c2638bb922cb8ba4e4bda3bc6",
    "blockNumber": "0x40a26e",
    "from": "0xcd93ef1ce3adc9aa7c46ec4bc3a2fd76db1d1f19",
    "gas": "0x569df",
    "gasPrice": "0x989680",
    "maxFeePerGas": "0x989680",
    "maxPriorityFeePerGas": "0x989680",
    "hash": "0xb971101419ff4a56420f6e8a689f6017388790c2e2b2bafea994a3d9afba0589",
    "input": "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",
    "nonce": "0x10",
    "to": "0x02f55d53dce23b4aa962cc68b0f685f26143bdb2",
    "transactionIndex": "0x1",
    "value": "0x0",
    "type": "0x2",
    "accessList": [],
    "chainId": "0xff",
    "v": "0x1",
    "r": "0xef3e9d42dcdde122d873f64c1b4567c09b7b5c88f1552af399d9f966c630dd3f",
    "s": "0x27857916a49abcf9b1f81cdf1cfc5496f6b3cc3e9bc9f04f2121cf89d863950c"
  }
}

eth_getTransactionByBlockNumberAndIndex

Returns information about a transaction by block number and transaction index position.

https://api.kromascan.com/api
   ?module=proxy
   &action=eth_getTransactionByBlockNumberAndIndex
   &tag=40A62A
   &apikey=YourApiKeyToken

Try this endpoint in your browser 🔗

Request

Query Parameters

Parameter	Description
tag	the block number, in hex eg. 0x10FB78

Response

Sample Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "blockHash": "0xd373e338e709942f0e3cf4b23c40af8ce7583ad45bf6b024915f841258f3be1a",
    "blockNumber": "0x40a62a",
    "from": "0xdeaddeaddeaddeaddeaddeaddeaddeaddead0001",
    "gas": "0xf4240",
    "gasPrice": "0x0",
    "hash": "0x18f930539833e83c168bb23907bae1d05cde9fa6b93c7fa62338db3034376548",
    "input": "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",
    "nonce": "0x40a62a",
    "to": "0x4200000000000000000000000000000000000002",
    "transactionIndex": "0x0",
    "value": "0x0",
    "type": "0x7e",
    "v": "0x0",
    "r": "0x0",
    "s": "0x0",
    "sourceHash": "0x3b74631cf8d3ea88f299ee466be9571bf3bcd3fc539a751980eaa94f55dba673",
    "mint": "0x0"
  }
}

eth_getTransactionCount

Returns the number of transactions performed by an address.

https://api.kromascan.com/api
   ?module=proxy
   &action=eth_getTransactionCount
   &address=0xcd93ef1ce3adc9aa7c46ec4bc3a2fd76db1d1f19
   &tag=latest
   &apikey=YourApiKeyToken

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Request

Query Parameters

Parameter	Description
address	the string representing the address to get transaction count
tag	the string pre-defined block parameter, either earliest, pending or latest

Response

Sample Response

{
   "jsonrpc":"2.0",
   "id":1,
   "result":"0x16"
}

eth_sendRawTransaction

Submits a pre-signed transaction for broadcast to the Ethereum network.

https://api.kromascan.com/api
   ?module=proxy
   &action=eth_sendRawTransaction
   &hex=0xf904808000831cfde080
   &apikey=YourApiKeyToken

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Request

Query Parameters

Parameter	Description
hex	the string representing the signed raw transaction data to broadcast.

💡 Tip: Send a POST request if your hex string is particularly long.

🖋️ For more information on creating a signed raw transaction, visit this page.

Response

Sample Response

{
  "id":1,
  "jsonrpc": "2.0",
  "result": "0xe670ec64341771606e55d6b4ca35a1a6b75ee3d5145a99d05921026d1527331"
}

⛏️ Note: The result represents the transaction hash of the submitted raw transaction.

Use eth_getTransactionReceipt to retrieve full details.

eth_getTransactionReceipt

Returns the receipt of a transaction by transaction hash.

https://api.kromascan.com/api
   ?module=proxy
   &action=eth_getTransactionReceipt
   &txhash=0xb971101419ff4a56420f6e8a689f6017388790c2e2b2bafea994a3d9afba0589
   &apikey=YourApiKeyToken

Try this endpoint in your browser 🔗

Request

Query Parameters

Parameter	Description
txhash	the string representing the hash of the transaction

Response

Sample Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "blockHash": "0x08f7bd2944b5bac8dcbd84f21af458a24f979c0c2638bb922cb8ba4e4bda3bc6",
    "blockNumber": "0x40a26e",
    "contractAddress": null,
    "cumulativeGasUsed": "0x48d07",
    "effectiveGasPrice": "0x989680",
    "from": "0xcd93ef1ce3adc9aa7c46ec4bc3a2fd76db1d1f19",
    "gasUsed": "0x38942",
    "l1Fee": "0x48f1d2e841d3",
    "l1FeeScalar": "0.684",
    "l1GasPrice": "0x6edddca4c",
    "l1GasUsed": "0xea8",
    "logs": [
      {
        "address": "0x4200000000000000000000000000000000000001",
        "topics": [
          "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
          "0x0000000000000000000000001782d71a0f16efcb632baf210a54ce641852a138",
          "0x000000000000000000000000cd93ef1ce3adc9aa7c46ec4bc3a2fd76db1d1f19"
        ],
        "data": "0x00000000000000000000000000000000000000000000000000489d464a6eb955",
        "blockNumber": "0x40a26e",
        "transactionHash": "0xb971101419ff4a56420f6e8a689f6017388790c2e2b2bafea994a3d9afba0589",
        "transactionIndex": "0x1",
        "blockHash": "0x08f7bd2944b5bac8dcbd84f21af458a24f979c0c2638bb922cb8ba4e4bda3bc6",
        "logIndex": "0x0",
        "removed": false
      },
      {
        "address": "0x0cf7c2a584988871b654bd79f96899e4cd6c41c0",
        "topics": [
          "0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925",
          "0x000000000000000000000000cd93ef1ce3adc9aa7c46ec4bc3a2fd76db1d1f19",
          "0x00000000000000000000000002f55d53dce23b4aa962cc68b0f685f26143bdb2"
        ],
        "data": "0x0000000000000000000000000000000000000000000000000000000000000004",
        "blockNumber": "0x40a26e",
        "transactionHash": "0xb971101419ff4a56420f6e8a689f6017388790c2e2b2bafea994a3d9afba0589",
        "transactionIndex": "0x1",
        "blockHash": "0x08f7bd2944b5bac8dcbd84f21af458a24f979c0c2638bb922cb8ba4e4bda3bc6",
        "logIndex": "0x1",
        "removed": false
      },
      {
        "address": "0x0cf7c2a584988871b654bd79f96899e4cd6c41c0",
        "topics": [
          "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
          "0x000000000000000000000000cd93ef1ce3adc9aa7c46ec4bc3a2fd76db1d1f19",
          "0x0000000000000000000000001782d71a0f16efcb632baf210a54ce641852a138"
        ],
        "data": "0x0000000000000000000000000000000000000000000000000000000002b8daba",
        "blockNumber": "0x40a26e",
        "transactionHash": "0xb971101419ff4a56420f6e8a689f6017388790c2e2b2bafea994a3d9afba0589",
        "transactionIndex": "0x1",
        "blockHash": "0x08f7bd2944b5bac8dcbd84f21af458a24f979c0c2638bb922cb8ba4e4bda3bc6",
        "logIndex": "0x2",
        "removed": false
      },
      {
        "address": "0x1782d71a0f16efcb632baf210a54ce641852a138",
        "topics": [
          "0x0fe977d619f8172f7fdbe8bb8928ef80952817d96936509f67d66346bc4cd10f",
          "0x0000000000000000000000000cf7c2a584988871b654bd79f96899e4cd6c41c0",
          "0x0000000000000000000000004200000000000000000000000000000000000001",
          "0x00000000000000000000000000000000000000000000000000000000000001f4"
        ],
        "data": "0x00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000002b8daba00000000000000000000000000000000000000000000000000489d464a6eb9550000000000000000000000000000000000000000000000000000000000030a21",
        "blockNumber": "0x40a26e",
        "transactionHash": "0xb971101419ff4a56420f6e8a689f6017388790c2e2b2bafea994a3d9afba0589",
        "transactionIndex": "0x1",
        "blockHash": "0x08f7bd2944b5bac8dcbd84f21af458a24f979c0c2638bb922cb8ba4e4bda3bc6",
        "logIndex": "0x3",
        "removed": false
      }
    ],
    "logsBloom": "0x00000000000000000000000000000000000000002000000000000000000000000480000000000000800000000000000000004000000000040000000200200000000000000001000001000008000020000000000000008000200000000000000000000000001000020000000000001000020000008000000000000010000004000000000000000000000000000000000000000000000000000000000000000000028000002000000000000000000000014000000000000000000000000000000000000002000000000000000000000000000000000100000000000000000000000010000000800000000000001000000000010020120000000000000000080000",
    "status": "0x1",
    "to": "0x02f55d53dce23b4aa962cc68b0f685f26143bdb2",
    "transactionHash": "0xb971101419ff4a56420f6e8a689f6017388790c2e2b2bafea994a3d9afba0589",
    "transactionIndex": "0x1",
    "type": "0x2"
  }
}

eth_call

Executes a new message call immediately without creating a transaction on the block chain.

https://api.kromascan.com/api
   ?module=proxy
   &action=eth_call
   &to=0xAEEF46DB4855E25702F8237E8f403FddcaF931C0
   &data=0x70a08231000000000000000000000000e16359506c028e51f16be38986ec5746251e9724
   &tag=latest
   &apikey=YourApiKeyToken

Try this endpoint in your browser 🔗

Request

Query Parameters

Parameter	Description
to	the string representing the address to interact with
data	the hash of the method signature and encoded parameters
tag	the string pre-defined block parameter, either earliest, pending or latest

⛽ Note: The gas parameter is capped at 2x the current block gas limit.

Response

Sample Response

{
   "jsonrpc":"2.0",
   "id":1,
   "result":"0x00000000000000000000000000000000000000000000000000601d8888141c00"
}

eth_getCode

Returns code at a given address.

https://api.kromascan.com/api
   ?module=proxy
   &action=eth_getCode
   &address=0x02f55d53dce23b4aa962cc68b0f685f26143bdb2
   &tag=latest
   &apikey=YourApiKeyToken

Try this endpoint in your browser 🔗

Request

Query Parameters

Parameter	Description
address	the string representing the address to get code
tag	the string pre-defined block parameter, either earliest, pending or latest

Response

Sample Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": 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}

eth_getStorageAt

Returns the value from a storage position at a given address.

This endpoint is still experimental and may have potential issues

https://api.kromascan.com/api
   ?module=proxy
   &action=eth_getStorageAt
   &address=0x02f55d53dce23b4aa962cc68b0f685f26143bdb2
   &position=0x0
   &tag=latest
   &apikey=YourApiKeyToken

Try this endpoint in your browser

Request

Query Parameters

Parameter	Description
address	the string representing the address to get code
position	the hex code of the position in storage, eg 0x0
tag	the string pre-defined block parameter, either earliest, pending or latest

Response

Sample Response

{
   "jsonrpc":"2.0",
   "id":1,
   "result":"0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"
}

eth_gasPrice

Returns the current price per gas in wei.

https://api.kromascan.com/api
   ?module=proxy
   &action=eth_gasPrice
   &apikey=YourApiKeyToken

Try this endpoint in your browser 🔗

Request

No parameters required.

Response

Sample Response

{
   "jsonrpc":"2.0",
   "id":73,
   "result":"0x430e23400"
}

📖 Tip: The result is returned in wei.

Easily convert Ethereum units using our unit converter.

eth_estimateGas

Makes a call or transaction, which won't be added to the blockchain and returns the used gas.

https://api.kromascan.com/api
   ?module=proxy
   &action=eth_estimateGas
   &data=0x4e71d92d
   &to=0xf0160428a8552ac9bb7e050d90eeade4ddd52843
   &value=0xff22
   &gasPrice=0x51da038cc
   &gas=0x5f5e0ff
   &apikey=YourApiKeyToken

Try this endpoint in your browser 🔗

Request

Query Parameters

Parameter	Description
data	the hash of the method signature and encoded parameters
to	the string representing the address to interact with
value	the value sent in this transaction, in hex eg. 0xff22
gas	the amount of gas provided for the transaction, in hex eg. 0x5f5e0ff
gasPrice	the gas price paid for each unit of gas, in wei post EIP-1559, the gasPrice has to be higher than the block's baseFeePerGas

⛽ Note: The gas parameter is capped at 2x the current block gas limit.

Response

Sample Response

{
   "jsonrpc":"2.0",
   "id":1,
   "result":"0x6556"
}