Block / Chunk

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The RPC API enables you to query the network and get details about specific blocks or chunks.

---

Block details

Queries network and returns block for given height or hash. You can also use finality param to return latest block details.

Note: You may choose to search by a specific block or finality, you can not choose both.

• method: block

• params:

  • finality OR block_id

finality example:

{
  "jsonrpc": "2.0",
  "id": "dontcare",
  "method": "block",
  "params": {
    "finality": "final"
  }
}

const response = await near.connection.provider.block({
  finality: "final",
});

http post https://near.nownodes.io/{API_KEY} jsonrpc=2.0 id=dontcare method=block \
  params:='{
    "finality": "final"
  }'

[block_id]

{
  "jsonrpc": "2.0",
  "id": "dontcare",
  "method": "block",
  "params": {
    "block_id": 17821130
  }
}

const response = await near.connection.provider.block({blockId: 17821130});

http post https://near.nownodes.io/{API_KEY} jsonrpc=2.0 id=dontcare method=block \
  params:='{
    "block_id": 17821130
  }'

[block_hash]

{
  "jsonrpc": "2.0",
  "id": "dontcare",
  "method": "block",
  "params": {
    "block_id": "7nsuuitwS7xcdGnD9JgrE22cRB2vf2VS4yh1N9S71F4d"
  }
}

const response = await near.connection.provider.block(
  {blockId: "7nsuuitwS7xcdGnD9JgrE22cRB2vf2VS4yh1N9S71F4d"}
);

http post https://near.nownodes.io/{API_KEY} jsonrpc=2.0 id=dontcare method=block \
  params:='{
    "block_id": "7nsuuitwS7xcdGnD9JgrE22cRB2vf2VS4yh1N9S71F4d"
  }'

Example response:

{
  "jsonrpc": "2.0",
  "result": {
    "author": "bitcat.pool.f863973.m0",
    "header": {
      "height": 17821130,
      "epoch_id": "7Wr3GFJkYeCxjVGz3gDaxvAMUzXuzG8MjFXTFoAXB6ZZ",
      "next_epoch_id": "A5AdnxEn7mfHieQ5fRxx9AagCkHNJz6wr61ppEXiWvvh",
      "hash": "CLo31YCUhzz8ZPtS5vXLFskyZgHV5qWgXinBQHgu9Pyd",
      "prev_hash": "2yUTTubrv1gJhTUVnHXh66JG3qxStBqySoN6wzRzgdVD",
      "prev_state_root": "5rSz37fySS8XkVgEy3FAZwUncX4X1thcSpuvCgA6xmec",
      "chunk_receipts_root": "9ETNjrt6MkwTgSVMMbpukfxRshSD1avBUUa4R4NuqwHv",
      "chunk_headers_root": "HMpEoBhPvThWZvppLwrXQSSfumVdaDW7WfZoCAPtjPfo",
      "chunk_tx_root": "7tkzFg8RHBmMw1ncRJZCCZAizgq4rwCftTKYLce8RU8t",
      "outcome_root": "7tkzFg8RHBmMw1ncRJZCCZAizgq4rwCftTKYLce8RU8t",
      "chunks_included": 1,
      "challenges_root": "11111111111111111111111111111111",
      "timestamp": 1601280114229875635,
      "timestamp_nanosec": "1601280114229875635",
      "random_value": "ACdUSF3nehbMTwT7qjUB6Mm4Ynck5TVAWbNH3DR1cjQ7",
      "validator_proposals": [],
      "chunk_mask": [true],
      "gas_price": "100000000",
      "rent_paid": "0",
      "validator_reward": "0",
      "total_supply": "1042339182040791154864822502764857",
      "challenges_result": [],
      "last_final_block": "AaxTqjYND5WAKbV2UZaFed6DH1DShN9fEemtnpTsv3eR",
      "last_ds_final_block": "2yUTTubrv1gJhTUVnHXh66JG3qxStBqySoN6wzRzgdVD",
      "next_bp_hash": "3ZNEoFYh2CQeJ9dc1pLBeUd1HWG8657j2c1v72ENE45Q",
      "block_merkle_root": "H3912Nkw6rtamfjsjmafe2uV2p1XmUKDou5ywgxb1gJr",
      "approvals": [
        "ed25519:4hNtc9vLhn2PQhktWtLKJV9g8SBfpm6NBT1w4syNFqoKE7ZMts2WwKA9x1ZUSBGVKYCuDGEqogLvwCF25G7e1UR3",
        "ed25519:2UNmbTqysMMevVPqJEKSq57hkcxVFcAMdGq7CFhpW65yBKFxYwpoziiWsAtARusLn9Sy1eXM7DkGTXwAqFiSooS6",
        "ed25519:4sumGoW9dnQCsJRpzkd4FQ5NSJypGQRCppWp7eQ9tpsEcJXjHZN8GVTCyeEk19WmbbMEJ5KBNypryyHzaH2gBxd4",
        "ed25519:3fP2dri6GjYkmHgEqQWWP9GcoQEgakbaUtfr3391tXtYBgxmiJUEymRe54m7D8bQrSJ3LhKD8gTFT7qqdemRnizR",
        "ed25519:3mwdqSWNm6RiuZAoZhD6pqsirC2cL48nEZAGoKixpqbrsBpAzqV3W2paH4KtQQ4JPLvk5pnzojaint2kNBCcUyq1",
        "ed25519:D4hMnxqLyQW4Wo29MRNMej887GH46yJXDKNN4es8UDSi9shJ9Y4FcGqkxdV4AZhn1yUjwN5LwfgAgY6fyczk5L3",
        null,
        "ed25519:4WCVm4dn88VJxTkUgcvdS7vs34diBqtQY4XWMRctSN1NpbgdkwwVyxg7d2SbGC22SuED7w4nrToMhcpJXrkhkDmF",
        "ed25519:JqtC7TFP7U14s7YhRKQEqwbc2RUxoctq75mrBdX91f7DuCWsPpe6ZTTnfHPmuJPjTzFHVZTsaQJWzwfSrrgNpnc",
        "ed25519:ngGUpWc2SyHmMCkWGTNNNfvZAJQ5z7P92JCmDqB7JW3j8fNH6LobvFFXb2zVdssibJKgnjwBj8CRe6qiZtuYQZM",
        "ed25519:5kzW6RbjukyJZiw9NTzTPPsQdoqN6EecafjVFEoWmTxQ4uSv1uSXhQYcHK2eq4m84oMmPABQDz2mm73Qx8mDdCQX",
        "ed25519:5wHnuuxwJJiZ4bXNq5cESnr4YovFU2yaUcuHRDUw3DnLoxkqc15CsegoyUSQKEwtCZ4yETv8Z9QcD6Wr9zHV4AUk",
        "ed25519:3F9XzWBxto31e8RAcBShAJBzJPgSJQsWbPXR38AfQnJn6AiveGz3JjebQm9Ye63BrnNA57QrPshwknxpzSrcNEZW",
        "ed25519:2g5s4SKsHt9PMdekkDqVtwwtz14v4edhqdBX1MYA8tB6nDpj3vDCDCTy9pEU8dX31PoQe5ygnf88aTZukMBMK1Yt",
        "ed25519:3Xz4jqhdyS3qs6xTmWdgjwt5gJraU5czMA89hPhmvbAN4aA7SUKL1HkevpmutRQqqxe7c7uCFeGiDHvDcxhhmD8W",
        null,
        "ed25519:55xs3vwPEys39egf9Z8SNyn1JsHPRMgj9HCX1GE7GJsVTcAuutQUCo91E12ZdXkuToYRXb9KzoT8n9XQRCNuLpwY",
        null,
        "ed25519:28JrFw7KnhnQPN89qZnnw17KDBjS6CDN7zB1hTg7KGg8qQPoCzakz9DNnaSnx39ji7e2fQSpZt4cNJaD7K7Yu7yo",
        "ed25519:41hAr5qhtvUYpdD2NK9qqTVnpG325ZoAiwrcmk1MJH7fdpxm7oSKXvXZqh7bTmPhv61hH2RpHnhcGuN4QqLzK2zt",
        "ed25519:4QacMsQ5FJgvecAYDFq8QBh19BBjh4qU8oeD5bV7p6Zhhu3e6r2iSHTvDBU2Q62RZAaWQQkkEwDUC9rsXdkGVhAt",
        "ed25519:27smtCZ3WobEvBuD5DggY6kkGxjB9qRVY6kPixgwqvBT1eKbRVoV8cLj1z51S8RTcp7YzAr1vhHJUHgksatR9Udz",
        "ed25519:4wspCWoAbhYxb3th2eX6ZXvKep1Fsco7mFP5zBodXBR8Wr344ANXSUCri3gUgNCCSoQ2CKSdqDEsvE6Y2jQ9hmbB",
        "ed25519:46XpYf9ZB9gjDfdnJLHqqhYJpQCuvCgB9tzKWS88GANMCb2j9BM3KXyjaEzynSsaPK8VrKFXQuTsTzgQSeo9cWGW",
        null,
        "ed25519:Y5ehsrhEpTRGjG6fHJHsEXj2NYPGMmKguiJHXP7TqsCWHBvNzaJbieR7UDp78hJ1ib7C18J5MB2kCzTXBCF9c3b",
        "ed25519:3P9363Dc8Kqvgjt3TsNRncUrncCHid7aSRnuySjF4JYmQbApkAxomyMu8xm9Rgo3mj9rqXb16PM7Xjn7hKP6TyVr",
        null,
        null,
        "ed25519:65ATjGsigZ3vMp7sGcp1c4ptxoqhHPkBeAaZ5GWJguVDLyrRLPJrtXhLGjH9DpXd7CZswjyMYq5aRtorLnmmJ7GW",
        null,
        "ed25519:5SvqSViXbtsLoFMdtCufyyDgZnrEK7LheFi38X5M2ic17gfV5cz37r85RyixjUv98MbAmgVdmkxVFDGfSbeoHW7X",
        null,
        null,
        "ed25519:2n3fQiBEiDKkB84biXWyQmvnupKX7B8faugY37jVi8hVXuWLggJmaEjqub511RCYwFnwW1RBxYpuJQ455KaniCd4",
        "ed25519:2K9xKFLJ2fW74tddXtghFGFurKWomAqaJmkKYVZKHQT6zHe5wNSYT3vzMotLQcez5JD1Ta57N9zQ4H1RysB2s5DZ",
        null,
        null,
        "ed25519:3qeCRtcLAqLtQ2YSQLcHDa26ykKX1BvAhP9jshLLYapxSEGGgZJY8sU72p9E78AkXwHP3X2Eq74jvts7gTRzNgMg",
        null,
        "ed25519:2czSQCF8wBDomEeSdDRH4gFoyJrp2ppZqR6JDaDGoYpaFkpWxZf2oGDkKfQLZMbfvU6LXkQjJssVHcLCJRMzG8co"
      ],
      "signature": "ed25519:58sdWd6kxzhQdCGvHzxqvdtDLJzqspe74f3gytnqdxDLHf4eesXi7B3nYq2YaosCHZJYmcR4HPHKSoFm3WE4MbxT",
      "latest_protocol_version": 35
    },
    "chunks": [
      {
        "chunk_hash": "EBM2qg5cGr47EjMPtH88uvmXHDHqmWPzKaQadbWhdw22",
        "prev_block_hash": "2yUTTubrv1gJhTUVnHXh66JG3qxStBqySoN6wzRzgdVD",
        "outcome_root": "11111111111111111111111111111111",
        "prev_state_root": "HqWDq3f5HJuWnsTfwZS6jdAUqDjGFSTvjhb846vV27dx",
        "encoded_merkle_root": "9zYue7drR1rhfzEEoc4WUXzaYRnRNihvRoGt1BgK7Lkk",
        "encoded_length": 8,
        "height_created": 17821130,
        "height_included": 17821130,
        "shard_id": 0,
        "gas_used": 0,
        "gas_limit": 1000000000000000,
        "rent_paid": "0",
        "validator_reward": "0",
        "balance_burnt": "0",
        "outgoing_receipts_root": "H4Rd6SGeEBTbxkitsCdzfu9xL9HtZ2eHoPCQXUeZ6bW4",
        "tx_root": "11111111111111111111111111111111",
        "validator_proposals": [],
        "signature": "ed25519:4iPgpYAcPztAvnRHjfpegN37Rd8dTJKCjSd1gKAPLDaLcHUySJHjexMSSfC5iJVy28vqF9VB4psz13x2nt92cbR7"
      }
    ]
  },
  "id": "dontcare"
}

What Could Go Wrong??

When API request fails, RPC server returns a structured error response with a limited number of well-defined error variants, so client code can exhaustively handle all the possible error cases. Our JSON-RPC errors follow verror convention for structuring the error response:

{
    "error": {
        "name": <ERROR_TYPE>,
        "cause": {
            "info": {..},
            "name": <ERROR_CAUSE>
        },
        "code": -32000,
        "data": String,
        "message": "Server error",
    },
    "id": "dontcare",
    "jsonrpc": "2.0"
}

Heads up

The fields code, data, and message in the structure above are considered legacy ones and might be deprecated in the future. Please, don't rely on them.

Here is the exhaustive list of the error variants that can be returned by block method:

ERROR_TYPE error.name	ERROR_CAUSE error.cause.name	Reason	Solution
HANDLER_ERROR	UNKNOWN_BLOCK	The requested block has not been produced yet or it has been garbage-collected (cleaned up to save space on the RPC node)	Check that the requested block is legit If the block had been produced more than 5 epochs ago, try to send your request to an archival node
NOT_SYNCED_YET	The node is still syncing and the requested block is not in the database yet	Wait until the node finish syncing Send a request to a different node which is synced
REQUEST_VALIDATION_ERROR	PARSE_ERROR	Passed arguments can't be parsed by JSON RPC server (missing arguments, wrong format, etc.)	Check the arguments passed and pass the correct ones Check error.cause.info for more details
INTERNAL_ERROR	INTERNAL_ERROR	Something went wrong with the node itself or overloaded	Try again later Send a request to a different node Check error.cause.info for more details

---

Changes in Block

Returns changes in block for given block height or hash. You can also use finality param to return latest block details.

Note: You may choose to search by a specific block or finality, you can not choose both.

• method: EXPERIMENTAL_changes_in_block

• params:

  • finality OR block_id

finality

{
  "jsonrpc": "2.0",
  "id": "dontcare",
  "method": "EXPERIMENTAL_changes_in_block",
  "params": {
    "finality": "final"
  }
}

const response = await near.connection.provider.experimental_changes_in_block({
  finality: "final",
});

http post https://near.nownodes.io/{API_KEY} jsonrpc=2.0 id=dontcare method=EXPERIMENTAL_changes_in_block \
  params:='{
    "finality": "final"
  }'

[block_id]

{
  "jsonrpc": "2.0",
  "id": "dontcare",
  "method": "EXPERIMENTAL_changes_in_block",
  "params": {
    "block_id": 17821135
  }
}

const response = await near.connection.provider.experimental_changes_in_block(
  17821135
);

http post https://near.nownodes.io/{API_KEY} jsonrpc=2.0 id=dontcare method=EXPERIMENTAL_changes_in_block \
  params:='{
    "block_id": 17821135
  }'

block_hash

{
  "jsonrpc": "2.0",
  "id": "dontcare",
  "method": "EXPERIMENTAL_changes_in_block",
  "params": {
    "block_id": "81k9ked5s34zh13EjJt26mxw5npa485SY4UNoPi6yYLo"
  }
}

const response = await near.connection.provider.experimental_changes_in_block(
  "81k9ked5s34zh13EjJt26mxw5npa485SY4UNoPi6yYLo"
);

http post https://near.nownodes.io/{API_KEY} jsonrpc=2.0 id=dontcare method=EXPERIMENTAL_changes_in_block \
  params:='{
    "block_id": "81k9ked5s34zh13EjJt26mxw5npa485SY4UNoPi6yYLo"
  }'

Example response:

{
  "jsonrpc": "2.0",
  "result": {
    "block_hash": "81k9ked5s34zh13EjJt26mxw5npa485SY4UNoPi6yYLo",
    "changes": [
      {
        "type": "account_touched",
        "account_id": "lee.testnet"
      },
      {
        "type": "contract_code_touched",
        "account_id": "lee.testnet"
      },
      {
        "type": "access_key_touched",
        "account_id": "lee.testnet"
      }
    ]
  },
  "id": "dontcare"
}

What Could Go Wrong??

When API request fails, RPC server returns a structured error response with a limited number of well-defined error variants, so client code can exhaustively handle all the possible error cases. Our JSON-RPC errors follow verror convention for structuring the error response:

{
    "error": {
        "name": <ERROR_TYPE>,
        "cause": {
            "info": {..},
            "name": <ERROR_CAUSE>
        },
        "code": -32000,
        "data": String,
        "message": "Server error",
    },
    "id": "dontcare",
    "jsonrpc": "2.0"
}

Heads up

The fields code, data, and message in the structure above are considered legacy ones and might be deprecated in the future. Please, don't rely on them.

Here is the exhaustive list of the error variants that can be returned by EXPERIMENTAL_changes_in_block method:

ERROR_TYPE error.name	ERROR_CAUSE error.cause.name	Reason	Solution
HANDLER_ERROR	UNKNOWN_BLOCK	The requested block has not been produced yet or it has been garbage-collected (cleaned up to save space on the RPC node)	Check that the requested block is legit If the block had been produced more than 5 epochs ago, try to send your request to an archival node
NOT_SYNCED_YET	The node is still syncing and the requested block is not in the database yet	Wait until the node finish syncing Send a request to a different node which is synced
REQUEST_VALIDATION_ERROR	PARSE_ERROR	Passed arguments can't be parsed by JSON RPC server (missing arguments, wrong format, etc.)	Check the arguments passed and pass the correct ones Check error.cause.info for more details
INTERNAL_ERROR	INTERNAL_ERROR	Something went wrong with the node itself or overloaded	Try again later Send a request to a different node Check error.cause.info for more details

---

Chunk Details

Returns details of a specific chunk. You can run a block details query to get a valid chunk hash.

• method: chunk

• params:

  • chunk_id OR block_id, shard_id

chunk_id example:

{
  "jsonrpc": "2.0",
  "id": "dontcare",
  "method": "chunk",
  "params": {"chunk_id": "EBM2qg5cGr47EjMPtH88uvmXHDHqmWPzKaQadbWhdw22"}
}

const response = await near.connection.provider.chunk({
  chunk_id: "EBM2qg5cGr47EjMPtH88uvmXHDHqmWPzKaQadbWhdw22"
});

http post https://near.nownodes.io/{API_KEY} jsonrpc=2.0 method=chunk params:='{"chunk_id": "EBM2qg5cGr47EjMPtH88uvmXHDHqmWPzKaQadbWhdw22"}' id=dontcare

block_id, shard_id example:

{
  "jsonrpc": "2.0",
  "id": "dontcare",
  "method": "chunk",
  "params": {"block_id": 58934027, "shard_id": 0}
}

const response = await near.connection.provider.chunk({
  block_id: 58934027, shard_id: 0
});

http post https://near.nownodes.io/{API_KEY} jsonrpc=2.0 method=chunk params:='{"block_id": 58934027, "shard_id": 0}' id=dontcare

Example response:

{
  "jsonrpc": "2.0",
  "result": {
    "author": "bitcat.pool.f863973.m0",
    "header": {
      "chunk_hash": "EBM2qg5cGr47EjMPtH88uvmXHDHqmWPzKaQadbWhdw22",
      "prev_block_hash": "2yUTTubrv1gJhTUVnHXh66JG3qxStBqySoN6wzRzgdVD",
      "outcome_root": "11111111111111111111111111111111",
      "prev_state_root": "HqWDq3f5HJuWnsTfwZS6jdAUqDjGFSTvjhb846vV27dx",
      "encoded_merkle_root": "9zYue7drR1rhfzEEoc4WUXzaYRnRNihvRoGt1BgK7Lkk",
      "encoded_length": 8,
      "height_created": 17821130,
      "height_included": 17821130,
      "shard_id": 0,
      "gas_used": 0,
      "gas_limit": 1000000000000000,
      "rent_paid": "0",
      "validator_reward": "0",
      "balance_burnt": "0",
      "outgoing_receipts_root": "H4Rd6SGeEBTbxkitsCdzfu9xL9HtZ2eHoPCQXUeZ6bW4",
      "tx_root": "11111111111111111111111111111111",
      "validator_proposals": [],
      "signature": "ed25519:4iPgpYAcPztAvnRHjfpegN37Rd8dTJKCjSd1gKAPLDaLcHUySJHjexMSSfC5iJVy28vqF9VB4psz13x2nt92cbR7"
    },
    "transactions": [],
    "receipts": []
  },
  "id": "dontcare"
}

What Could Go Wrong??

When API request fails, RPC server returns a structured error response with a limited number of well-defined error variants, so client code can exhaustively handle all the possible error cases. Our JSON-RPC errors follow verror convention for structuring the error response:

{
    "error": {
        "name": <ERROR_TYPE>,
        "cause": {
            "info": {..},
            "name": <ERROR_CAUSE>
        },
        "code": -32000,
        "data": String,
        "message": "Server error",
    },
    "id": "dontcare",
    "jsonrpc": "2.0"
}

Heads up

The fields code, data, and message in the structure above are considered legacy ones and might be deprecated in the future. Please, don't rely on them.

Here is the exhaustive list of the error variants that can be returned by chunk method:

ERROR_TYPE error.name	ERROR_CAUSE error.cause.name	Reason	Solution
HANDLER_ERROR	UNKNOWN_BLOCK	The requested block has not been produced yet or it has been garbage-collected (cleaned up to save space on the RPC node)	Check that the requested block is legit If the block had been produced more than 5 epochs ago, try to send your request to an archival node
UNKNOWN_CHUNK	The requested chunk can't be found in a database	Check that the requested chunk is legit If the chunk had been produced more than 5 epochs ago, try to send your request to an archival node
INVALID_SHARD_ID	Provided shard_id does not exist	Provide shard_id for an existing shard
NOT_SYNCED_YET	The node is still syncing and the requested chunk is not in the database yet	Wait until the node finish syncing Send a request to a different node which is synced
REQUEST_VALIDATION_ERROR	PARSE_ERROR	Passed arguments can't be parsed by JSON RPC server (missing arguments, wrong format, etc.)	Check the arguments passed and pass the correct ones Check error.cause.info for more details
INTERNAL_ERROR	INTERNAL_ERROR	Something went wrong with the node itself or overloaded	Try again later Send a request to a different node Check error.cause.info for more details

---