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Json Web Token(JWT)

Get the latest block height of blockchain network.

Get latest block number

Get the detail of a block by the given block humber.

Get block by number

Get the detail of a transaction given the transaction hash.

Provide the param "hash" or ("block_number" and "tx_index"). If both params are provided,
"hash" will be used.

Get transaction

Returns the transactions from the address.

Get transactions by account

Gets the list of events for the specified contract.

Get events by contract

Calls a specific function for the specified contract.

Contract call

Retrieve all token balances for all ERC20 tokens for a specified address.

By default, it will return all token balances for all ERC20 tokens that the address has ever received.
You can specify a contract address to check the balance of a non-standard contract.

Get ERC20 token balances

Get the list of NFTs owned by an account.

Get NFTs owned by address

Returns the balance for a specified address.

Get native token balances

Get token metadata

Get the list of top holders of the specified contract.

Get top token holders

Get the list of holders of the specified contract.

Get token holders

Get token price

Get the historical price of the specified token.

Get token price history

Retrieves historical token transfer transactions for any ERC20 contract.

Get token transfers by contract

Get the metadata associated with the specified NFT.

Get NFT metadata

Get all owners for a specified NFT collection.

Get NFT owners by collection

Get the current owner for a specified NFT token.

Get NFT owner by token

Get NFT rarity

Get the list of historical owner addresses for a specified NFT token.

Get NFT owner history by token

Get the historical transfer transactions for a specified contract address.

Get NFT transfers by collection

Get NFT collection items

Get NFT collection metadata

Return a list of NFT Collection search results.

Search by name or query a specified contract address.

Search for NFT collections using names and contract addresses

Get the trending NFT collections on marketplaces over a period of time.

Get trending collections by marketplace

Get the historical floor prices of an NFT collection.

Get floor price history by collection

Get the current floor price of an NFT collection.

Get floor price by collection

Gets a list of ENS domains held by a given address.

Get ENS domains

Reverse resolves a given ETH address to its ENS domain.

Reverse resolve ENS domain

Resolves a ETH address given an ENS Domain.

Resolve ENS domain

Resolves a BNB address given an BNB Domain.

Resolve SPACE ID domain

Reverse resolves SPACE ID domain from an BNB address.

Reverse resolve SPACE ID domain

Execute Queries (Alpha)

Get Query Status (Alpha)

Get Query Results (Alpha)

Data Cloud SQL Query (Classic)

Get All Webhooks

Get Webhook

Create Webhook

Update webhook the account created before.

Update Webhook

Activate Webhook

Deactivate webhook the running webhook job.

Deactivate Webhook

Delete Webhook

Returns the current client version.

**Parameters**

none

**Returns**

`String` - The current client version

web3_clientVersion

Returns Keccak-256 (not the standardized SHA3-256) of the given data.

**Parameters**

`DATA` - the data to convert into a SHA3 hash

```
params: [
  "0x68656c6c6f20776f726c64"
]
```

**Returns**

`DATA` - The SHA3 result of the given string.

web3_sha3

Returns the block number of most recent block.

**Parameters**

None

**Returns**

- `QUANTITY` - Integer of the current highest block number the client is on

eth_blockNumber

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

**Parameters**

- `Object` - An object of type Call
  - `from`:`DATA`, 20 Bytes - (optional) The address the transaction is sent from
  - `to`:`DATA`, 20 Bytes - The address the transaction is directed to
  - `gas`: `QUANTITY` - (optional) Integer of the gas provided for the transaction execution. 
  eth_call consumes zero gas, but this parameter may be needed by some executions
  - `gasPrice`: `QUANTITY` - (optional) Integer of the gasPrice used for each paid gas
  - `value`: `QUANTITY` - (optional) Integer of the value sent with this transaction
  - `data`: `DATA` - (optional) Hash of the method signature and encoded parameters. 
  For details see Ethereum Contract ABI
- `QAUANTITY|TAG` - Integer block number or one of "earliest", "latest" or "pending"


**Example**

```json body
{
     "id": "1",
     "jsonrpc": "2.0",
     "method": "eth_call",
     "params": [
          {
               "to": "0x08a2e41fb99a7599725190b9c970ad3893fa33cf",
               "data": "0x18160ddd",
               "from": "0x08a2e41fb99a7599725190b9c970ad3893fa33cf",
               "gas": "0xfffff",
               "gasPrice": "0xfffff",
               "value": "0x123123"
          },
          "latest"
     ]
}
```

**Returns**

- `DATA` - The return value of executed contract

eth_call

Returns the current ethereum chainId.

**Parameters**

None

**Returns**

- `QUANTITY` - The current chainId

eth_chainId

Returns an estimate of how much gas is necessary to allow the transaction to complete. 
The transaction will not be added to the blockchain.

**Parameters**

- `Object` - An object of type Call, see `eth_call` parameters, expect that all properties are optional

**Returns**

- `QUANTITY` - The estimated amount of gas needed for the call

eth_estimateGas

Returns the current price per gas in wei.

**Parameters**

None

**Returns**

- `QUANTITY` - Integer of the current gas price in wei

eth_gasPrice

Returns the balance of an account for a given address.

**Parameters**

- `DATA`, 20 Bytes - Address to check for balance
- `TAG` - Integer block number or one of "earliest", "latest" or "pending"

**Returns**

- `QUANTITY` - Integer of the current balance in wei

eth_getBalance

Returns information about a block given the block's hash.

**Parameters**

- `DATA`, 32 Bytes - Hash of a block
- `Boolean` - If true it returns the full transaction objects, if false only the hashes of the transactions

**Returns**

- `Object` - An object of type Block as described at `eth_getBlockByNumber`, or null when no block was found

eth_getBlockByHash

Returns information about a block given the block's number.

**Parameters**

- `QUANTITY|TAG` - Integer block number or one of "earliest", "latest" or "pending"
- `Boolean` - If true it returns the full transaction objects, if false only the hashes of the transactions

**Returns**

- `Object` - An object of type Block defined as:
- `number`: `QUANTITY` - The block number or null when pending
- `hash`: `DATA`, 32 Bytes - Hash of the block or null when pending
- `parentHash`: `DATA`, 32 Bytes - Hash of the parent block
- `nonce`: `DATA`, 8 bytes - Hash of the proof of work or null when pending
- `sha3Uncles`: `DATA`, 32 Bytes - SHA3 of the uncles data in the block
- `logsBloom`: `DATA`, 256 Bytes - The bloom filter for the block's logs or null when pending
- `transactionsRoot`: `DATA`, 32 Bytes - The root of the transaction trie of the block
- `stateRoot`: `DATA`, 32 Bytes - The root of the final state trie of the block
- `receiptsRoot`: `DATA`, 32 Bytes - The root of the receipts trie of the block
- `miner`: `DATA`, 20 Bytes - The address of the beneficiary to whom the mining rewards were given
- `difficulty`: `QUANTITY` - Integer of the difficulty for this block
- `totalDifficulty`: `QUANTITY` - Integer of the total difficulty of the chain until this block
- `extraData`: `DATA` - The extra data field of this block
- `size`: `QUANTITY` - Integer the size of this block in bytes
- `gasLimit`: `QUANTITY` - The maximum gas allowed in this block
- `gasUsed`: `QUANTITY` - The total used gas by all transactions in this block
- `timestamp`: `QUANTITY` - The unix timestamp for when the block was collated
- `transactions`: `ARRAY` - Array of transaction objects, or 32 Bytes transaction hashes depending on the 
last given parameter
- `uncles`: `ARRAY` - Array of uncle hashes

eth_getBlockByNumber

Returns the number of transactions in a block given the block's block hash.

**Parameters**

- `DATA`, 32 Bytes - hash of a block

**Returns**

- `QUANTITY` - Integer of the number of transactions in this block

eth_getBlockTransactionCountByHash

Returns the number of transactions in a block given the block's block number.

**Parameters**

- `QUANTITY|TAG` - Integer block number or one of "earliest", "latest" or "pending"

**Returns**

- `QUANTITY` - Integer of the number of transactions in this block

eth_getBlockTransactionCountByNumber

Returns the byte code at a given address (if it's a smart contract).

**Parameters**

- `DATA`, 20 Bytes - Address from which to retreive byte code
- `TAG` - Integer block number or one of "earliest", "latest" or "pending"

**Returns**

- `DATA` - The byte code (if any) found at the given address

eth_getCode

Returns an array of objects of type Log

an array of block hashes (for eth_newBlockFilter) 
or an array of transaction hashes (for eth_newPendingTransactionFilter) 
or an empty array if nothing has changed since the last poll.

**Note**

In solidity: The first topic is the hash of the signature of the event 
(if you have not declared the event anonymous.

**Parameters**

- `QUANTITY` - The filter id

**Returns**

- `Object` - An object of type FilterLog is defined as
  - `removed`: `BOOLEAN` - true when the log was removed, due to a chain reorganization. 
  false if its a valid log
  - `logIndex`: `QUANTITY` - Integer of the log index position in the block. null when its pending log
  - `transactionIndex`: `QUANTITY` - Integer of the transactions index position log was created from. 
  null when its pending log
  - `transactionHash`: `DATA`, 32 Bytes - hash of the transactions this log was created from. 
  null when its pending log
  - `blockHash`: `DATA`, 32 Bytes - hash of the block where this log was in. null when its pending. 
  null when its pending log
  - `blockNumber`: `QUANTITY` - The block number where this log was in. null when its pending. 
  null when its pending log
  - `address`: `DATA`, 20 Bytes - address from which this log originated
  - `data`: `DATA` - contains one or more 32 Bytes non-indexed arguments of the log
  - `topics`: `Array of DATA` - Array of 0 to 4 32 Bytes DATA of indexed log arguments.

eth_getFilterChanges

Returns an array of logs matching a given filter object.

**Parameters**

- `Object` - An object of type Filter, see `eth_newFilter` parameters

**Returns**

- `Object` - An object of type LogArray or an empty array if nothing has changed since last poll. 
   See `eth_getFilterChanges` for more details

eth_getLogs

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

**Parameters**

- `DATA`, 20 Bytes - Address of the contract whose storage to retreive 
- `QUANTITY` - Integer of the position in the storage 
- `TAG` - Integer block number or one of "earliest", "latest" or "pending"

**Returns**

- `DATA` - The value at this storage position

eth_getStorageAt

Returns information about a transaction given the block's hash and a transaction index.

**Parameters**

- `DATA`, 32 Bytes - hash of a block
- `QUANTITY` - Integer of the transaction index position

**Returns**

- `Object` - An object of type Transaction or null when no transaction was found. 
See `eth_getTransactionByHash`

eth_getTransactionByBlockHashAndIndex

Returns information about a transaction given a block number and transaction index.

**Parameters**

- `TAG` - Integer block number or one of "earliest", "latest" or "pending"
- `QUANTITY` - The transaction index position

**Returns**

- `Object` - An object of type Transaction or null when no transaction was found. 
See `eth_getTransactionByHash`

eth_getTransactionByBlockNumberAndIndex

Returns information about a transaction given the transaction's hash.

**Parameters**

- `TAG` - Integer block number or one of "earliest", "latest" or "pending"
- `Boolean` - If true it returns the full transaction objects, if false only the hashes of the transactions

**Returns**

- `Object` - An object of type Block defined as:
  - `number`: `QUANTITY` - The block number or null when pending
  - `hash`: `DATA`, 32 Bytes - Hash of the block or null when pending
  - `parentHash`: `DATA`, 32 Bytes - Hash of the parent block
  - `nonce`: `DATA`, 8 bytes - Hash of the proof of work or null when pending
  - `sha3Uncles`: `DATA`, 32 Bytes - SHA3 of the uncles data in the block
  - `logsBloom`: `DATA`, 256 Bytes - The bloom filter for the block's logs or null when pending
  - `transactionsRoot`: `DATA`, 32 Bytes - The root of the transaction trie of the block
  - `stateRoot`: `DATA`, 32 Bytes - The root of the final state trie of the block
  - `receiptsRoot`: `DATA`, 32 Bytes - The root of the receipts trie of the block
  - `miner`: `DATA`, 20 Bytes - The address of the beneficiary to whom the mining rewards were given
  - `difficulty`: `QUANTITY` - Integer of the difficulty for this block
  - `totalDifficulty`: `QUANTITY` - Integer of the total difficulty of the chain until this block
  - `extraData`: `DATA` - The extra data field of this block
  - `size`: `QUANTITY` - Integer the size of this block in bytes
  - `gasLimit`: `QUANTITY` - The maximum gas allowed in this block
  - `gasUsed`: `QUANTITY` - The total used gas by all transactions in this block
  - `timestamp`: `QUANTITY` - The unix timestamp for when the block was collated
  - `transactions`: `ARRAY` - Array of transaction objects, or 32 Bytes transaction hashes 
  depending on the last given parameter
  - `uncles`: `ARRAY` - Array of uncle hashes

eth_getTransactionByHash

Returns the number of transactions sent from an address (the nonce).

**Parameters**

- `DATA`, 20 Bytes - Address from which to retrieve nonce
- `TAG` - Integer block number or one of "earliest", "latest" or "pending"

**Returns**

- `QUANTITY` - Integer of the number of transactions sent from this address

eth_getTransactionCount

Returns the receipt of a transaction given the transaction's hash.

**Parameters**

- `DATA`, 32 Bytes - hash of a transaction

**Returns**

- `Object` - An object of type TransactionReceipt or null when no receipt was found
  - `transactionHash`: `DATA`, 32 Bytes - hash of the transaction
  - `transactionIndex`: `QUANTITY` - Integer of the transactions index position in the block
  - `blockHash`: `DATA`, 32 Bytes - hash of the block where this transaction was in
  - `blockNumber`: `QUANTITY` - block number where this transaction was in
  - `cumulativeGasUsed`: `QUANTITY` - The total amount of gas used when this transaction 
  was executed in the block
  - `gasUsed`: `QUANTITY` - The amount of gas used by this specific transaction alone
  - `contractAddress`: `DATA`, 20 Bytes - The contract address created, if the transaction was 
  a contract creation, null otherwise
  - `logs`: `Array` - Array of log objects, which this transaction generated
  - `logsBloom`: `DATA`, 256 Bytes - Bloom filter for light clients to quickly retrieve related logs.
  - `root`: `DATA` 32 bytes - post-transaction stateroot (if the block is pre-Byzantium)
  - `status`: `QUANTITY` - either 1 = success or 0 = failure (if block is Byzatnium or later)

eth_getTransactionReceipt

Returns information about an uncle given a block's hash and the index of the uncle.

**Parameters**

- `DATA`, 32 Bytes - Hash of the block holding the uncle
- `QUANTITY` - The uncle's index position

**Returns**

- `Object` - An object of type Block (with zero transactions), 
  or null when no uncle was found. See `eth_getBlockByHash`

eth_getUncleByBlockHashAndIndex

Returns information about an uncle given a block's number and the index of the uncle.

**Parameters**

- `TAG` - Integer block number or one of "earliest", "latest" or "pending"
- `QUANTITY` - The uncle's index position

**Returns**

- `Object` - An object of type Block (with zero transactions), or null when no uncle was found. 
  See `eth_getBlockByHash`

eth_getUncleByBlockNumberAndIndex

Returns the number of uncles in the block, if any.

**Parameters**

- `DATA`, 32 Bytes - Hash of the block containing the uncle

**Returns**

- `QUANTITY` - The number of uncles in the block, if any

eth_getUncleCountByBlockHash

Returns the number of uncles in the block, if any.

**Parameters**

- `TAG` - Integer block number or one of "earliest", "latest" or "pending"

**Returns**

- `QUANTITY` - The number of uncles in the block, if any

eth_getUncleCountByBlockNumber

Creates a block filter in the node, to notify when a new block arrives. 
To check if the state has changed, call `eth_getFilterChanges`.

**Parameters**

None

**Returns**

- `QUANTITY` - A filter id

eth_newBlockFilter

Creates an arbitrary filter object, based on filter options, 
to notify when the state changes (logs). 

To check if the state has changed, call `eth_getFilterChanges`.

**note**

Filters expire after 5 minutes of inactivity (no queries).

**Note on specifying topic filters**

- `[]` “anything”
- `[A]` “A in first position (and anything after)”
- `[null, B]` “anything in first position AND B in second position (and anything after)”
- `[A, B]` “A in first position AND B in second position (and anything after)”
- `[[A, B], [A, B]]` “(A OR B) in first position AND (A OR B) in second position (and anything after)”

**Parameters**

- `Object` - An object of type Filter
  - `fromBlock`: `QUANTITY|TAG` - (optional, default "latest") Integer block number, 
  or "earliest", "latest" or "pending" for not yet mined transactions
  - `toBlock`: `QUANTITY|TAG` - (optional, default "latest") Integer block number, 
  or "earliest", "latest" or "pending" for not yet mined transactions
  - `address`: `DATA|Array of DATA`, 20 Bytes - (optional) Contract address or a list of addresses 
  from which logs should originate
  - `topics`: `Array of DATA`, - (optional) Array of 32 Bytes DATA topics. Topics are order-dependent. 
  Each topic can also be an array of DATA with "or" options

**Returns**

- `QUANTITY` - A filter id

eth_newFilter

Creates a pending transaction filter in the node. To check if the state has changed, 
call eth_getFilterChanges.

**Parameters**

None

**Returns**

- `QUANTITY` - A filter id

eth_newPendingTransactionFilter

Returns the current ethereum protocol version.

**Parameters**

None

**Returns**

- `QUANTITY` - The current ethereum protocol version

eth_protocolVersion

Creates new message call transaction or a contract creation for previously-signed transactions.

**Parameters**

- `DATA` - The signed transaction data

**Returns**

- `DATA`, 32 Bytes - The transaction hash, or the zero hash if the transaction is not yet available

eth_sendRawTransaction

Returns a data object detailing the status of the sync process or false if not syncing.

**Parameters**

None

**Returns**

- `Object` - An object of type Syncing or false if not syncing.
  - `startingBlock`: `QUANTITY` - The block at which the import started 
  (will only be reset, after the sync reached his head)
  - `currentBlock`: `QUANTITY` - The current block, same as eth_blockNumber
  - `highestBlock`: `QUANTITY` - The estimated highest block

eth_syncing

Uninstalls a previously-created filter given the filter's id. 
Always uninstall filters when no longer needed.

**Parameters**

- `QUANTITY` - The filter id

**Returns**

- `Boolean` - True if the filter was successfully uninstalled, false otherwise

eth_uninstallFilter

Returns true if client is actively listening for network connections.

**Parameters**

None

**Returns**

- `Boolean` - true when listening, false otherwise

net_listening

Returns the current network id.

**Parameters**

None

**Returns**

- `STRING` - The current network id. One of BR  
  "1": Ethereum Mainnet BR  
  "2": Morden Testnet (deprecated) BR  
  "3": Ropsten Testnet BR  
  "4": Rinkeby Testnet BR  
  "42": Kovan Testnet BR

net_version

Returns Geth style Block traces.

**Parameters**

- DATA, 32 Bytes - hash of transaction to trace.
- OBJECT, Object - An object of type tracer
    - tracer: callTracer or prestateTracer  

**Returns**

TRACES - An array of traces as per Geth

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Introduction

Core Concepts

Contributing

​Developers

​Local Development

​Testing and Validation

​Publishing

​Operators

​Validators

​Delegators

Developers

Local Development

Testing and Validation

Publishing

Operators

Validators

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