JSON-RPC API

dApps can get account status, send transactions, and call other functions via zkLink API.
The zkLink API follows the JSON-RPC standard and is accessed via POST.
API OVERVIEW
Networks
Block
Account
Transaction
​getSupportChains: get the configuration of all supported chains.
​getSupportTokens: get the data of all tokens with on-chain contract addresses.
​getLatestBlockNumber: get the latest block height info.
​getTokenReserve: get the withdrawable limit of a token on a certain L1 chain.
​getBlockByNumber: get the block info by block height.
​getBlockOnChainNumber: get the transaction information in a block that is executed on L1 blockchains.
​getAccount: get account info by address or account id.
​getAccountBalances: get the balance info of an account.
​getAccountOrderSlots: get the order slot of an account.
​getAccountSnapshot: get the account states of a certain block height, including the basic info, balance info, and order slot info.
​getTransactionByHash: get transaction info.
​getAccountTransactionHistory: get account history in descending order of the transaction id in the database.
​getFastWithdrawTxs: get transaction info of fast_withdraw transactions.
​sendTransaction: submit L2 transaction and return transaction hash.
JSON-RPC API METHODS
getSupportChains
Get the configuration of all supported chains.
Request
Response
Parameters
None
{
    "id": 1,
    "jsonrpc": "2.0",
    "method": "getSupportChains",
    "params": []
}
Returns
ChainResp
{
    "jsonrpc": "2.0",
    "result": [
      {
        "chainId":1,
        "chainType": 0,
        "layerOneChainId":1001,
        "mainContract":"0x03855e8120691526f82085453AEefac3f6A484F1",
        "layerZeroContract": "0xcb45b54BA16fBdc7092E56938225a11799eb1124",
        "web3Url": "https://rpc-mumbai.maticvigil.com",
        "feeCap": 1000000000000000000,
        "gasTokenId": 33,
        "validator": "0x526212fbd41080b455ae81014b5b6bf859c30094"
      }
    ],
    "id": 1
}
ChainResp
Field
Type
Description
chainId
uint32
Defined by zkLink
chainType
uint8
Defined by zkLink {0:"EVM", 1:"STARKNET"}
layerOneChainId
uint32
The chain ID of L1 blockchains
mainContract
address(EVM|StarkNet)
The address of zkLink main contract that interacts with the rest module contracts
layerZeroContract
address(EVM|StarkNet)
The address of layerZero bridge that syncs L1 states
web3Url
string
The url of L1 RPC
feeCap
unit
The max transaction fee when L1 RPC send the transaction 
gasTokenId
uint32
The id of the gas token, defined by zkLink
validator
address(EVM|StarkNet)
Validator address
getSupportTokens
Get the data of all tokens with on-chain contract addresses.
Request
Response
Parameters
None
{
    "id": 1,
    "jsonrpc": "2.0",
    "method": "getSupportTokens",
    "params": []
}
Returns
HashMap<TokenId,TokenResp>
{
    "jsonrpc": "2.0",
    "result": {
        "1": {
            "id": 1,
            "symbol": "ZKL",
          	"usdPrice": "12.1",
            "chains": {
                "1": {
                    "chainId": 1,
                    "address": "0x1aef2b4c06b83cdb2783d3458cdbf3886a6ae7d4",
                  	"decimals": 18,
                    "fastWithdraw": false
                },
                "2": {
                    "chainId": 2,
                    "address": "0xa684f63605ccdedbce7e2e7e3fa06441758da6d1",
                  	"decimals": 10,
                    "fastWithdraw": true
                }
            }
        }
    },
    "id": 1
}
It returns a HashMap<TokenId,TokenResp>, which has a unique token id and is used for all token-related queries in the RPC service. Symbols are used only for display on the UI and do not promise uniqueness.
TokenResp
Field
Description
id
Token id
symbol
Token symbol
usdPrice
Token price
chains
HashMap<ChainId,ChainTokenResp> that includes the contract addresses on each chain
ChainTokenResp
Field
Description
chainId
Defined by zkLink
address
The on-chain contract address of the token
decimals
The decimals of the token on L1
fastWithdraw
Whether the token supports fast withdraw
The decimal is the accuracy of the token on L1, which is not always 18 (6 for USDC and 18 for ZKL), and varies on different chains for the same token (6 for USDC on Ethereum and 18 for USDC on BSC).
When a user deposits to zkLink from connected networks, the front-end needs to calculate the amount required for calling the contract according to the accuracy:
var amount_of_user_input = 1.0 // input from the user
var amount_to_call_contract = amount_of_user_input * 10 ** token.decimals // the parameter during calling the contract
// Example
// A user deposits 2 USDC, the parameter is 2 * 10^6
// A user deposits 5 ZKL, the parameter is 5 * 10^18
getLatestBlockNumber
Get the latest block height info.
Request
Response
Parameters
None
{
    "id": 1,
    "jsonrpc": "2.0",
    "method": "getLatestBlockNumber",
    "params": []
}
Returns
BlockNumberResp
{
    "jsonrpc": "2.0",
    "result": {
        "lastBlockNumber": 2,
        "timestamp": 1663488014,
        "committed": 1,
        "verified": 0 
    },
    "id": 1
}
BlockNumberResp
Field
Description
lastBlockNumber
The block height of the latest batch
timestamp
The timestamp of the last block
committed
The block height of the latest block committed to L1
verified
The block height of the latest block executed on L1
getBlockByNumber
Get the block info by block height.
Request
Response
Parameters
blockNumber: the block height, and returns the latest block height if null
includeTx : whether contains transaction details: returns transaction hash if false. only successful transactions will be included in a block. call getTransactionByHash to query the failed transactions.
includeUpdate: whether contains the state change by transactions; valid only when includeTx is true.
{
    "id": 1,
    "jsonrpc": "2.0",
    "method": "getBlockByNumber",
    "params": [
      123, 
      true, 
      true 
    ]
}
Returns
BlockResp
{
  "jsonrpc": "2.0",
  "result": {
    "number": 14127,
    "commitment": "0x052fdba72bbb6fcc10940fc22dc76e459dda32604a17a920b8f2d2d0f0caff8f",
    "rootHash": "0x2a5bb557a7b39afc2480b84c56f230ac2be6148fc367edf5f9447e3521a0da56",
    "feeAccountId": 0,
    "blockSize": 20,
    "opsCompositionNumber": 401,
    "createdAt": "2023-02-04T04:41:35Z",
    "transactions": [
      {
        "txHash": "0x7c85b50664efb9672613b2b3ceafd6e1f9f47938053690b885f0a8071fac1ffa",
        "tx": {
          "type": "Deposit",
          "fromChainId": 2,
          "from": "0x3d809e414ba4893709c85f242ba3617481bc4126",
          "subAccountId": 0,
          "l1SourceToken": 18,
          "l2TargetToken": 18,
          "amount": "10000000000000000000",
          "to": "0xb92a8ba62ff1d141798c7133cccefb33d9073323",
          "serialId": 22,
          "ethHash": "0x6ac27ec5de06c51dc9f167aa13424d08026953c9706d39c72d64cabe59ad7266"
        },
        "executedTimestamp":1689731233,
        "updates": [
          {
            "type": "AccountCreate",
            "updateId": 15,
            "accountId": 4,
            "address": "0xb92a8ba62ff1d141798c7133cccefb33d9073323"
          },
          {
            "type": "BalanceUpdate",
            "updateId": 16,
            "accountId": 4,
            "subAccountId": 0,
            "coinId": 18,
            "oldBalance": "0",
            "newBalance": "10000000000000000000",
            "oldNonce": 0,
            "newNonce": 0
          },
          {
            "type": "BalanceUpdate",
            "updateId": 17,
            "accountId": 1,
            "subAccountId": 2,
            "coinId": 18,
            "oldBalance": "3030000000000000000000",
            "newBalance": "3040000000000000000000",
            "oldNonce": 0,
            "newNonce": 0
          }
        ]
      },
      {
        "txHash": "0x7aaf7535c5edecf19805b6395e92865c544f387c71d8f75648d0353100a821f6",
        "tx": {
          "type": "FullExit",
          "toChainId": 1,
          "accountId": 28,
          "subAccountId": 1,
          "exitAddress": "0xae08c2e27765faef5cb05908dbac12242caf91af",
          "l2SourceToken": 44,
          "l1TargetToken": 44,
          "serialId": 28,
          "ethHash": "0x57b1fda1f7dd3aac85af60dc69300e0209c0a6abadc047a8f88e0a894220ba82"
        },
        "executedTimestamp":1689731234,
        "updates": [
          {
            "type": "BalanceUpdate",
            "updateId": 0,
            "accountId": 28,
            "subAccountId": 1,
            "coinId": 44,
            "oldBalance": "1080000000000000000",
            "newBalance": "0",
            "oldNonce": 0,
            "newNonce": 0
          },
          {
            "type": "BalanceUpdate",
            "updateId": 1,
            "accountId": 1,
            "subAccountId": 1,
            "coinId": 44,
            "oldBalance": "1497300000000000000000",
            "newBalance": "1496220000000000000000",
            "oldNonce": 0,
            "newNonce": 0
          }
        ]
      },
      {
        "txHash": "0x7c2dab9dadc2f3471b71c5531bfa70d0a67d16df62cfd6ed43b5970b3dccf7ad",
        "tx": {
          "type": "ChangePubKey",
          "chainId": 2,
          "accountId": 2,
          "subAccountId": 0,
          "newPkHash": "0x870b67b523f93dad7a313f6b64b9608dedab3874",
          "feeToken": 18,
          "fee": "1000000000000000000",
          "nonce": 0,
          "signature": {
            "pubKey": "5f07954b65b5407a37ec0a2c54fb4647e2014475936057bb2f52a6faab938b02",
            "signature": "4ad95ddd573830c2e85065ee201e503b24fb56faeedc1790e8a35668805d7b00691cb8c78ce124fbe0c15ed903c72975750eb12f74a5c711b870fba3496f0402"
          },
          "ethAuthData": {
            "type": "EthECDSA",
            "ethSignature": "0xf8aa40b44c89e3be8a07fc25e90b9c069fde2f3fb01125f9a8683fba054b5b4961ccbc6e957fda303c64868d9f6bc3b0f8c55a38137195633f330573a813a5d31b"
          },
          "ts": 1677821209
        },
        "executedTimestamp":1689731235,
        "updates": [
          {
            "type": "AccountChangePubkeyUpdate",
            "updateId": 8,
            "accountId": 2,
            "oldPubkeyHash": "0x0000000000000000000000000000000000000000",
            "newPubkeyHash": "0x870b67b523f93dad7a313f6b64b9608dedab3874",
            "oldNonce": 0,
            "newNonce": 1
          },
          {
            "type": "BalanceUpdate",
            "updateId": 9,
            "accountId": 2,
            "subAccountId": 0,
            "coinId": 18,
            "oldBalance": "10000000000000000000",
            "newBalance": "9000000000000000000",
            "oldNonce": 1,
            "newNonce": 1
          },
          {
            "type": "BalanceUpdate",
            "updateId": 10,
            "accountId": 0,
            "subAccountId": 0,
            "coinId": 18,
            "oldBalance": "0",
            "newBalance": "1000000000000000000",
            "oldNonce": 0,
            "newNonce": 0
          }
        ]
      },
      {
        "txHash": "0xa2fa942af20e3ea1764158470a9f1f5609280dcd73cad5497ecf5ec20e8cad83",
        "tx": {
          "type": "Transfer",
          "accountId": 2,
          "fromSubAccountId": 0,
          "toSubAccountId": 1,
          "to": "0xdc9c9863167ee865edd5216964b8b99d43ee7a81",
          "token": 18,
          "amount": "1000000000000",
          "fee": "209000000000000",
          "nonce": 115,
          "signature": {
            "pubKey": "5f07954b65b5407a37ec0a2c54fb4647e2014475936057bb2f52a6faab938b02",
            "signature": "d6501c14f1ed8e3feeb4c3242697067dd60da0c56af544c8faeb2d055a21d3059c78c320008028f37fedc4d9578553782b2fd204610da670d1326a277dac2004"
          },
          "ts": 1677821506
        },
         "executedTimestamp":1689731236,
        "updates": [
          {
            "type": "BalanceUpdate",
            "updateId": 12,
            "accountId": 2,
            "subAccountId": 0,
            "coinId": 18,
            "oldBalance": "3018976060000000000000",
            "newBalance": "3018975850000000000000",
            "oldNonce": 115,
            "newNonce": 116
          },
          {
            "type": "BalanceUpdate",
            "updateId": 13,
            "accountId": 2,
            "subAccountId": 1,
            "coinId": 18,
            "oldBalance": "114000000000000",
            "newBalance": "115000000000000",
            "oldNonce": 115,
            "newNonce": 116
          },
          {
            "type": "BalanceUpdate",
            "updateId": 14,
            "accountId": 0,
            "subAccountId": 0,
            "coinId": 18,
            "oldBalance": "1023826000000000000",
            "newBalance": "1024035000000000000",
            "oldNonce": 0,
            "newNonce": 0
          }
        ]
      },
      {
        "txHash": "0x3b285c94d89ae17f7c288b10036a3dacff3460384601005afb440b1620bb538a",
        "tx": {
          "type": "Withdraw",
          "toChainId": 1,
          "accountId": 3,
          "subAccountId": 0,
          "to": "0x3d809e414ba4893709c85f242ba3617481bc4126",
          "l2SourceToken": 44,
          "l1TargetToken": 44,
          "amount": "1300000000000000000",
          "fee": "1531000000000000",
          "nonce": 81,
          "signature": {
            "pubKey": "b720c6110e673b55b5725dd0ff5778a8668ef4c7324718f78fa11def63081e85",
            "signature": "ec2c25aded9d1bbc85106178917a9da55a711449b4a49d0dbc01485290959225739ef0b3155498e96ba79cfbcb4a79a5f3ea4a179c6c210baca86820e8020b05"
          },
          "fastWithdraw": 1,
          "withdrawFeeRatio": 2000,
          "ts": 1677830493
        },
        "executedTimestamp":1689731237,
        "updates": [
          {
            "type": "BalanceUpdate",
            "updateId": 3,
            "accountId": 3,
            "subAccountId": 0,
            "coinId": 44,
            "oldBalance": "2993839561700000000000",
            "newBalance": "2992538030700000000000",
            "oldNonce": 81,
            "newNonce": 82
          },
          {
            "type": "BalanceUpdate",
            "updateId": 4,
            "accountId": 1,
            "subAccountId": 1,
            "coinId": 44,
            "oldBalance": "1500000000000000000000",
            "newBalance": "1498700000000000000000",
            "oldNonce": 0,
            "newNonce": 0
          },
          {
            "type": "BalanceUpdate",
            "updateId": 5,
            "accountId": 0,
            "subAccountId": 0,
            "coinId": 44,
            "oldBalance": "438300000000000",
            "newBalance": "1969300000000000",
            "oldNonce": 0,
            "newNonce": 0
          }
        ]
      },
      {
        "txHash": "0x8ada34680c8ba0e5cdbc14011e51c9989cab9339e0a7e679d14c14e7a587149d",
        "tx": {
          "type": "ForcedExit",
          "toChainId": 2,
          "initiatorAccountId": 3,
          "initiatorSubAccountId": 0,
          "target": "0x086cacda48e8a77680ba1e79177d1655f7130c95",
          "targetSubAccountId": 1,
          "l2SourceToken": 40,
          "l1TargetToken": 40,
          "fee": "19030000000000000",
          "feeToken": 18,
          "nonce": 178,
          "signature": {
            "pubKey": "b720c6110e673b55b5725dd0ff5778a8668ef4c7324718f78fa11def63081e85",
            "signature": "b119bd5971397b6abc499f6a2c09358b8c39d937be5bc96e3f186b4fc5026c80a933eea1b8f9c71cab8bb10ae554a2765008b937a724d026512f97cbeeacef05"
          },
          "ts": 1677836553
        },
        "executedTimestamp":1689731238,
        "updates": [
          {
            "type": "BalanceUpdate",
            "updateId": 20,
            "accountId": 3,
            "subAccountId": 0,
            "coinId": 18,
            "oldBalance": "2790050120799999999999",
            "newBalance": "2790031090799999999999",
            "oldNonce": 178,
            "newNonce": 179
          },
          {
            "type": "BalanceUpdate",
            "updateId": 21,
            "accountId": 15,
            "subAccountId": 1,
            "coinId": 40,
            "oldBalance": "2100000000000000000",
            "newBalance": "0",
            "oldNonce": 0,
            "newNonce": 0
          },
          {
            "type": "BalanceUpdate",
            "updateId": 22,
            "accountId": 1,
            "subAccountId": 2,
            "coinId": 40,
            "oldBalance": "4000001486590000000000000000",
            "newBalance": "4000001484490000000000000000",
            "oldNonce": 0,
            "newNonce": 0
          },
          {
            "type": "BalanceUpdate",
            "updateId": 23,
            "accountId": 0,
            "subAccountId": 0,
            "coinId": 18,
            "oldBalance": "7272586000000000000",
            "newBalance": "7291616000000000000",
            "oldNonce": 0,
            "newNonce": 0
          }
        ]
      },
      {
        "txHash": "0x640f38c6b09744d627b16e03339064d6edd39187cde8c4329fa19a2a60db8664",
        "tx": {
          "type": "OrderMatching",
          "accountId": 6,
          "subAccountId": 1,
          "taker": {
            "accountId": 13,
            "subAccountId": 1,
            "slotId": 163,
            "nonce": 0,
            "baseTokenId": 41,
            "quoteTokenId": 1,
            "amount": "1886200000000000000",
            "price": "1568210000000000000000",
            "isSell": 1,
            "feeRatio1": 5,
            "feeRatio2": 10,
            "signature": {
              "pubKey": "1aedae58e43fe6661db7f834ae438930443908d108fdf621bfd4741fedfcd82f",
              "signature": "57b7a0f06eb5d5dffbc8e8a6626ef7f9c472a8ac7761db36f8a0a2df2049988a9b43e8b3292a969b9b6cc5f689a5eecb8b05981ef1e3ca6e0de0da64ae6d6e01"
            }
          },
          "maker": {
            "accountId": 13,
            "subAccountId": 1,
            "slotId": 898,
            "nonce": 1,
            "baseTokenId": 41,
            "quoteTokenId": 1,
            "amount": "684900000000000000",
            "price": "1569150000000000000000",
            "isSell": 0,
            "feeRatio1": 5,
            "feeRatio2": 10,
            "signature": {
              "pubKey": "1aedae58e43fe6661db7f834ae438930443908d108fdf621bfd4741fedfcd82f",
              "signature": "b0aebe2bdd7a98a78d564d11c5f138cf428382628af55e85c250446b03dc0005f734e952819278d0b96fa970c6ab0018e33bb5bda7c55d69658551d2e606b904"
            }
          },
          "fee": "391000000000000",
          "feeToken": 1,
          "expectBaseAmount": "54800000000000000",
          "expectQuoteAmount": "85989420000000000000",
          "signature": {
            "pubKey": "84bf4edbe1f7056f079ba4c38359427f43d529fbab2e94e6d6b7a18efbf2fb87",
            "signature": "34e768dce60268f702b9a9ca68cb19d6785d2d1da8d7c799a29aa45e8c8bd9096c20cbf518c95fce2b2b58329492c35896162fe9cb1ff13f6e3a946b15bb2202"
          }
        },
        "executedTimestamp":1689731239,
        "updates": [
          {
            "type": "OrderUpdate",
            "updateId": 0,
            "accountId": 13,
            "subAccountId": 1,
            "slotId": 898,
            "oldTidyOrder": {
              "nonce": 1,
              "residue": "54800000000000000"
            },
            "newTidyOrder": {
              "nonce": 2,
              "residue": "0"
            }
          },
          {
            "type": "BalanceUpdate",
            "updateId": 1,
            "accountId": 13,
            "subAccountId": 1,
            "coinId": 1,
            "oldBalance": "200304228482442156994500000",
            "newBalance": "200304142493022156994500000",
            "oldNonce": 1,
            "newNonce": 1
          },
          {
            "type": "BalanceUpdate",
            "updateId": 2,
            "accountId": 13,
            "subAccountId": 1,
            "coinId": 41,
            "oldBalance": "199999971788889400000000000",
            "newBalance": "199999971843662000000000000",
            "oldNonce": 1,
            "newNonce": 1
          },
          {
            "type": "OrderUpdate",
            "updateId": 3,
            "accountId": 13,
            "subAccountId": 1,
            "slotId": 163,
            "oldTidyOrder": {
              "nonce": 0,
              "residue": "1467400000000000000"
            },
            "newTidyOrder": {
              "nonce": 0,
              "residue": "1412600000000000000"
            }
          },
          {
            "type": "BalanceUpdate",
            "updateId": 4,
            "accountId": 13,
            "subAccountId": 1,
            "coinId": 41,
            "oldBalance": "199999971843662000000000000",
            "newBalance": "199999971788862000000000000",
            "oldNonce": 1,
            "newNonce": 1
          },
          {
            "type": "BalanceUpdate",
            "updateId": 5,
            "accountId": 13,
            "subAccountId": 1,
            "coinId": 1,
            "oldBalance": "200304142493022156994500000",
            "newBalance": "200304228396452736994500000",
            "oldNonce": 1,
            "newNonce": 1
          },
          {
            "type": "BalanceUpdate",
            "updateId": 6,
            "accountId": 6,
            "subAccountId": 1,
            "coinId": 1,
            "oldBalance": "9999680162000000000000",
            "newBalance": "9999679771000000000000",
            "oldNonce": 224,
            "newNonce": 224
          },
          {
            "type": "BalanceUpdate",
            "updateId": 7,
            "accountId": 6,
            "subAccountId": 0,
            "coinId": 1,
            "oldBalance": "3529001244641983488661500000",
            "newBalance": "3529001244727972908661500000",
            "oldNonce": 224,
            "newNonce": 224
          },
          {
            "type": "BalanceUpdate",
            "updateId": 8,
            "accountId": 6,
            "subAccountId": 0,
            "coinId": 41,
            "oldBalance": "1594000000063937300000000000",
            "newBalance": "1594000000063964700000000000",
            "oldNonce": 224,
            "newNonce": 224
          },
          {
            "type": "BalanceUpdate",
            "updateId": 9,
            "accountId": 0,
            "subAccountId": 0,
            "coinId": 1,
            "oldBalance": "483683000000000000",
            "newBalance": "484074000000000000",
            "oldNonce": 0,
            "newNonce": 0
          }
        ]
      }
    ]
  },
  "id": 1
}
BlockResp
Field
Description
number
The block height
commitment
The commitment of the block, similar to the block hash of Ethereum
rootHash
The root hash of the state tree
feeAccountId
The id of the fee account
blockSize
The maximum chunk number that a block can contain
opsCompositionNumber
The vk of generating ZKPs
timestamp
The block timestamp
transactions
Returns [BlockTxResp] when includeTx is false, TxResp when true; ordered by transaction execution: the ones executed first come first in the array
BlockTxResp
Field
Description
txHash
The transaction hash
tx
ZkLinkTx
executedTimestamp
The unix timestamp of transaction execution
updates
[StateUpdateResp], ordered by updateId: the ones executed first come first in the array
​
StateUpdateResp
The success of transaction execution will lead to the change of the state tree:
AccountCreate: create a new account in the state tree
AccountChangePubkeyUpdate: change in pubkey and nonce
BalanceUpdate: change in account balance and nonce
OrderUpdate: change in account slot
AccountCreate
Field
Description
type
AccountCreate
updateId
The position of the update in the block
accountId
The id of the new account
address
The account address
Example:
{
  "type": "AccountCreate",
  "updateId": 40,
  "accountId": 42,
  "address": "0xe4efc3d7b69a19d3ae574cbc2915ddf598efe43f"
}
Transactions that may generate AccountCreate include:
Deposit
Transfer
AccountChangePubkeyUpdate
Field	Type	Description
chainId	uint32	Defined by zkLink
chainType	uint8	Defined by zkLink {0:"EVM", 1:"STARKNET"}
layerOneChainId	uint32	The chain ID of L1 blockchains
mainContract	address(EVM\|StarkNet)	The address of zkLink main contract that interacts with the rest module contracts
layerZeroContract	address(EVM\|StarkNet)	The address of layerZero bridge that syncs L1 states
web3Url	string	The url of L1 RPC
feeCap	unit	The max transaction fee when L1 RPC send the transaction
gasTokenId	uint32	The id of the gas token, defined by zkLink
validator	address(EVM\|StarkNet)	Validator address
Field	Description
id	Token id
symbol	Token symbol
usdPrice	Token price
chains	`HashMap<ChainId,ChainTokenResp>` that includes the contract addresses on each chain
Field	Description
chainId	Defined by zkLink
address	The on-chain contract address of the token
decimals	The decimals of the token on L1
fastWithdraw	Whether the token supports fast withdraw
Field	Description
lastBlockNumber	The block height of the latest batch
timestamp	The timestamp of the last block
committed	The block height of the latest block committed to L1
verified	The block height of the latest block executed on L1
Field	Description
number	The block height
commitment	The commitment of the block, similar to the block hash of Ethereum
rootHash	The root hash of the state tree
feeAccountId	The id of the fee account
blockSize	The maximum chunk number that a block can contain
opsCompositionNumber	The vk of generating ZKPs
timestamp	The block timestamp
transactions	Returns `[BlockTxResp]` when `includeTx` is false, `TxResp` when true; ordered by transaction execution: the ones executed first come first in the array
Field	Description
txHash	The transaction hash
tx	`ZkLinkTx`
executedTimestamp	The unix timestamp of transaction execution
updates	`[StateUpdateResp]`, ordered by `updateId`: the ones executed first come first in the array
Field	Description
type	AccountCreate
updateId	The position of the update in the block
accountId	The id of the new account
address	The account address