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C-Chain

Supported JSON-RPC methods for Avalanche mainnet and fuji testnet.

Contract Chain (C-Chain):

The Contract Chain is the default smart contract blockchain on Avalanche and enables the creation of any Ethereum-compatible smart contracts. This blockchain is for applications that require total ordering (for faster asset transfers or any other commutative application, use the Exchange Chain). The Contract Chain implements the consensus protocol.

The trailing endpoint for C-Chain calls is:

eth_accounts

Returns a list of addresses owned by client.

This method will use 10 Compute Units.

Reference: Here

Parameters

None

Returns

array of data - 20 Bytes - addresses owned by the client

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": ["0x407d73d8a49eeb85d32cf465507dd71d507100c1"]
}

curl https://mainnet.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_accounts","params":[],"id":1}'

curl https://fuji.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_accounts","params":[],"id":1}'

eth_blockNumber

Returns the number of most recent block.

This method will use 10 .

Reference:

Parameters

None

Returns

INTEGER - Value of the current block number the client is on

eth_call

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

This method will use 30 .

Reference:

Parameters

Object - The transaction call object

from - [optional] String of the address the transaction is sent from.
to - String of the address the transaction is directed to.
gas - [optional] Integer of the gas provided for the transaction execution.
gasprice - [optional] Integer of the gasPrice used for each paid gas encoded as a hexadecimal.
value - [optional] Integer of the value sent with this transaction encoded as a hexadecimal.
data - [optional] String of the hash of the method signature and encoded parameters. For more information, see the .

QUANTITY | TAG - integer block number, or the string "latest", "earliest" or "pending", see the

Returns

data - hex value of the executed call or contract

eth_chainId

Returns the chain ID used for signing replay-protected transactions.

This method will use 5 .

Reference:

Parameters

None

Returns

chainId, hexadecimal value as a string representing the integer of the current chain id.

eth_estimateGas

Generates and returns an estimate of how much gas is necessary to allow the transaction to complete.

This method will use 100 .

Reference:

Parameters

from - [optional] String of the address the transaction is sent from.

to - [optional] String of the address the transaction is directed to.

gas - [optional] Integer of the gas provided for the transaction execution.

gasprice - [optional] Integer of the gasPrice used for each paid gas encoded as a hexadecimal.

value - [optional] Integer of the value sent with this transaction encoded as a hexadecimal.

data - [optional] String of the hash of the method signature and encoded parameters. For more information, see the .

Returns

String - hex string value representing an integer of the amount of gas units used.

eth_gasPrice

Returns the current price per gas in wei.

This method will use 20 .

Reference:

Parameters

None

Returns

String - hex string value representing an integer of the current price per gas in WEI.

eth_getBalance

Returns the balance of the account of given address.

This method will use 20 .

Reference:

Parameters

DATA, 20 Bytes - address to check for balance.
QUANTITY|TAG - integer block number, or the string "latest", "earliest" or "pending", see the

Returns

INTEGER - Hex value representing integer of the current balance in WEI.

eth_getBlockByHash

Returns information about a block by hash.

This method will use 30 .

Reference:

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 are returned.

Returns

Object - A block object, or null when no block was found:

number: QUANTITY - the block number. null when its pending block.
hash: DATA, 32 Bytes - hash of the block. null when its pending block.
parentHash: DATA, 32 Bytes - hash of the parent block.
nonce: DATA, 8 Bytes - hash of the generated proof-of-work. null when its pending block.
sha3Uncles: DATA, 32 Bytes - SHA3 of the uncles data in the block.
logsBloom: DATA, 256 Bytes - the bloom filter for the logs of the block. null when its pending block.
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 information about a block by block number.

This method will use 20 .

Reference:

Parameters

QUANTITY|TAG - integer of a block number, or the string "earliest", "latest" or "pending", as in the .
Boolean - If true it returns the full transaction objects, if false only the hashes of the transactions.

Returns

Object - A block object, or null when no block was found:

number: QUANTITY - the block number. null when its pending block.
hash: DATA, 32 Bytes - hash of the block. null when its pending block.
parentHash: DATA, 32 Bytes - hash of the parent block.
nonce: DATA, 8 Bytes - hash of the generated proof-of-work. null when its pending block.
sha3Uncles: DATA, 32 Bytes - SHA3 of the uncles data in the block.
logsBloom: DATA, 256 Bytes - the bloom filter for the logs of the block. null when its pending block.
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_getBlockTransactionCountByHash

Returns the number of transactions in a block from a block matching the given block hash.

This method will use 20 .

Reference:

Parameters

DATA, 32 Bytes - hash of a block

Returns

QUANTITY - integer of the number of transactions in this block.

eth_getBlockTransactionCountByNumber

Returns the number of transactions in a block matching the given block number.

This method will use 20 .

Reference:

Parameters

QUANTITY|TAG - integer of a block number, or the string "earliest", "latest" or "pending", as in the .

Returns

QUANTITY - integer of the number of transactions in this block.

eth_getCode

Returns code at a given address.

This method will use 20 Compute Units.

Reference: Here

Parameters

DATA, 20 Bytes - address.
QUANTITY|TAG - integer block number, or the string "latest", "earliest" or "pending", see the default block parameter

params: [
  "0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b",
  "0x2", // 2
]

Returns

DATA - the code from the given address.

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": "0x600160008035811a818181146012578301005b601b6001356025565b8060005260206000f25b600060078202905091905056"
}

curl https://mainnet.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_getCode","params":["0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b", "0x2"],"id":1}'

curl https://fuji.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE> \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_getCode","params":["0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b", "0x2"],"id":1}'

eth_getFilterChanges

Polling method for a filter, which returns an array of logs which occurred since last poll.

This method will use 20 .

Reference:

Parameters

QUANTITY - the filter id.

Returns

Array - Array of log objects, or an empty array if nothing has changed since last poll.

For filters created with eth_newBlockFilter the return are block hashes (DATA, 32 Bytes), e.g. ["0x3454645634534..."].
For filters created with eth_newPendingTransactionFilter the return are transaction hashes (DATA, 32 Bytes), e.g. ["0x6345343454645..."].
For filters created with eth_newFilter logs are objects with following params:
- removed: TAG - 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. (In solidity: The first topic is the hash of the signature of the event (e.g. Deposit(address,bytes32,uint256)), except you declared the event with the anonymous specifier.)

eth_getFilterLogs

Returns an array of all logs matching filter with given id.

This method will use 70 Compute Units.

Reference: Here

Parameters

QUANTITY - the filter id.

params: 
[
  "0x16", // 22
]

Returns

Array - Array of log objects, or an empty array if nothing has changed since last poll.

For filters created with eth_newBlockFilter the return are block hashes (DATA, 32 Bytes), e.g. ["0x3454645634534..."].
For filters created with eth_newPendingTransactionFilter the return are transaction hashes (DATA, 32 Bytes), e.g. ["0x6345343454645..."].
For filters created with eth_newFilter logs are objects with following params:
- removed: TAG - 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. (In solidity: The first topic is the hash of the signature of the event (e.g. Deposit(address,bytes32,uint256)), except you declared the event with the anonymous specifier.)

// Result
{
  "id":1,
  "jsonrpc":"2.0",
  "result": [{
    "logIndex": "0x1", // 1
    "blockNumber":"0x1b4", // 436
    "blockHash": "0x8216c5785ac562ff41e2dcfdf5785ac562ff41e2dcfdf829c5a142f1fccd7d",
    "transactionHash":  "0xdf829c5a142f1fccd7d8216c5785ac562ff41e2dcfdf5785ac562ff41e2dcf",
    "transactionIndex": "0x0", // 0
    "address": "0x16c5785ac562ff41e2dcfdf829c5a142f1fccd7d",
    "data":"0x0000000000000000000000000000000000000000000000000000000000000000",
    "topics": ["0x59ebeb90bc63057b6515673c3ecf9438e5058bca0f92585014eced636878c9a5"]
    },{
      ...
    }]
}

curl https://mainnet.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_getFilterLogs","params":["0x16"],"id":74}'

curl https://fuji.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_getFilterLogs","params":["0x16"],"id":74}'

eth_getLogs

Returns an array of all logs matching a given filter object.

This method will use 80 .

Reference:

Parameters

Object - The filter options:

fromBlock: QUANTITY|TAG - (optional, default: "latest") Integer block number, or "latest" for the last mined block or "pending", "earliest" for not yet mined transactions.
toBlock: QUANTITY|TAG - (optional, default: "latest") Integer block number, or "latest" for the last mined block or "pending", "earliest" for not yet mined transactions.
address: DATA|Array, 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.
blockhash: DATA, 32 Bytes - (optional, future) With the addition of EIP-234, blockHash will be a new filter option which restricts the logs returned to the single block with the 32-byte hash blockHash. Using blockHash is equivalent to fromBlock = toBlock = the block number with hash blockHash. If blockHash is present in in the filter criteria, then neither fromBlock nor toBlock are allowed.

Returns

Array - Array of log objects, or an empty array if nothing has changed since last poll.

For filters created with eth_newBlockFilter the return are block hashes (DATA, 32 Bytes), e.g. ["0x3454645634534..."].
For filters created with eth_newPendingTransactionFilter the return are transaction hashes (DATA, 32 Bytes), e.g. ["0x6345343454645..."].
For filters created with eth_newFilter logs are objects with following params:
- removed: TAG - 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. (In solidity: The first topic is the hash of the signature of the event (e.g. Deposit(address,bytes32,uint256)), except you declared the event with the anonymous specifier.)

eth_getStorageAt

Returns the balance of the account of given address.

This method will use 20 .

Reference:

Parameters

DATA, 20 Bytes - address of the storage.
QUANTITY - integer of the position in the storage.
QUANTITY|TAG - integer block number, or the string "latest", "earliest" or "pending", see the

Returns

String - Hex value representing data at this storage position.

eth_getTransactionByBlockHashAndIndex

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

This method will use 20 Compute Units.

Reference: Here

Parameters

DATA, 32 Bytes - hash of a block.
QUANTITY - integer of the transaction index position.

params: [
  "0xe670ec64341771606e55d6b4ca35a1a6b75ee3d5145a99d05921026d1527331",
  "0x0", // 0
]

Returns

Object - A transaction object, or null when no transaction was found:

blockHash: DATA, 32 Bytes - hash of the block where this transaction was in. null when its pending.
blockNumber: QUANTITY - block number where this transaction was in. null when its pending.
from: DATA, 20 Bytes - address of the sender.
gas: QUANTITY - gas provided by the sender.
gasPrice: QUANTITY - gas price provided by the sender in Wei.
hash: DATA, 32 Bytes - hash of the transaction.
input: DATA - the data send along with the transaction.
nonce: QUANTITY - the number of transactions made by the sender prior to this one.
to: DATA, 20 Bytes - address of the receiver. null when its a contract creation transaction.
transactionIndex: QUANTITY - integer of the transactions index position in the block. null when its pending.
value: QUANTITY - value transferred in Wei.
v: QUANTITY - ECDSA recovery id
r: QUANTITY - ECDSA signature r
s: QUANTITY - ECDSA signature s

// Result
{
  "jsonrpc":"2.0",
  "id":1,
  "result":{
    "blockHash":"0x1d59ff54b1eb26b013ce3cb5fc9dab3705b415a67127a003c3e61eb445bb8df2",
    "blockNumber":"0x5daf3b", // 6139707
    "from":"0xa7d9ddbe1f17865597fbd27ec712455208b6b76d",
    "gas":"0xc350", // 50000
    "gasPrice":"0x4a817c800", // 20000000000
    "hash":"0x88df016429689c079f3b2f6ad39fa052532c56795b733da78a91ebe6a713944b",
    "input":"0x68656c6c6f21",
    "nonce":"0x15", // 21
    "to":"0xf02c1c8e6114b1dbe8937a39260b5b0a374432bb",
    "transactionIndex":"0x41", // 65
    "value":"0xf3dbb76162000", // 4290000000000000
    "v":"0x25", // 37
    "r":"0x1b5e176d927f8e9ab405058b2d2457392da3e20f328b16ddabcebc33eaac5fea",
    "s":"0x4ba69724e8f69de52f0125ad8b3c5c2cef33019bac3249e2c0a2192766d1721c"
}

curl https://mainnet.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_getTransactionByBlockHashAndIndex","params":["0xc6ef2fc5426d6ad6fd9e2a26abeab0aa2411b7ab17f30a99d3cb96aed1d1055b", "0x0"],"id":1}'

curl https://fuji.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_getTransactionByBlockHashAndIndex","params":["0xc6ef2fc5426d6ad6fd9e2a26abeab0aa2411b7ab17f30a99d3cb96aed1d1055b", "0x0"],"id":1}'

eth_getTransactionByBlockNumberAndIndex

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

This method will use 20 Compute Units.

Reference: Here

Parameters

QUANTITY|TAG - a block number, or the string "earliest", "latest" or "pending", as in the default block parameter.
QUANTITY - the transaction index position.

params: [
  "0x29c", // 668
  "0x0", // 0
]

Returns

Object - A transaction object, or null when no transaction was found:

blockHash: DATA, 32 Bytes - hash of the block where this transaction was in. null when its pending.
blockNumber: QUANTITY - block number where this transaction was in. null when its pending.
from: DATA, 20 Bytes - address of the sender.
gas: QUANTITY - gas provided by the sender.
gasPrice: QUANTITY - gas price provided by the sender in Wei.
hash: DATA, 32 Bytes - hash of the transaction.
input: DATA - the data send along with the transaction.
nonce: QUANTITY - the number of transactions made by the sender prior to this one.
to: DATA, 20 Bytes - address of the receiver. null when its a contract creation transaction.
transactionIndex: QUANTITY - integer of the transactions index position in the block. null when its pending.
value: QUANTITY - value transferred in Wei.
v: QUANTITY - ECDSA recovery id
r: QUANTITY - ECDSA signature r
s: QUANTITY - ECDSA signature s

// Result
{
  "jsonrpc":"2.0",
  "id":1,
  "result":{
    "blockHash":"0x1d59ff54b1eb26b013ce3cb5fc9dab3705b415a67127a003c3e61eb445bb8df2",
    "blockNumber":"0x5daf3b", // 6139707
    "from":"0xa7d9ddbe1f17865597fbd27ec712455208b6b76d",
    "gas":"0xc350", // 50000
    "gasPrice":"0x4a817c800", // 20000000000
    "hash":"0x88df016429689c079f3b2f6ad39fa052532c56795b733da78a91ebe6a713944b",
    "input":"0x68656c6c6f21",
    "nonce":"0x15", // 21
    "to":"0xf02c1c8e6114b1dbe8937a39260b5b0a374432bb",
    "transactionIndex":"0x41", // 65
    "value":"0xf3dbb76162000", // 4290000000000000
    "v":"0x25", // 37
    "r":"0x1b5e176d927f8e9ab405058b2d2457392da3e20f328b16ddabcebc33eaac5fea",
    "s":"0x4ba69724e8f69de52f0125ad8b3c5c2cef33019bac3249e2c0a2192766d1721c"
  }

curl https://mainnet.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_getTransactionByBlockNumberAndIndex","params":["0x29c", "0x0"],"id":1}'

curl https://fuji.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_getTransactionByBlockNumberAndIndex","params":["0x29c", "0x0"],"id":1}'

eth_getTransactionByHash

Returns the information about a transaction requested by transaction hash.

This method will use 20 Compute Units.

Reference: Here

Parameters

DATA, 32 Bytes - hash of a transaction

params: ["0x88df016429689c079f3b2f6ad39fa052532c56795b733da78a91ebe6a713944b"]

Returns

Object - A transaction object, or null when no transaction was found:

blockHash: DATA, 32 Bytes - hash of the block where this transaction was in. null when its pending.
blockNumber: QUANTITY - block number where this transaction was in. null when its pending.
from: DATA, 20 Bytes - address of the sender.
gas: QUANTITY - gas provided by the sender.
gasPrice: QUANTITY - gas price provided by the sender in Wei.
hash: DATA, 32 Bytes - hash of the transaction.
input: DATA - the data send along with the transaction.
nonce: QUANTITY - the number of transactions made by the sender prior to this one.
to: DATA, 20 Bytes - address of the receiver. null when its a contract creation transaction.
transactionIndex: QUANTITY - integer of the transactions index position in the block. null when its pending.
value: QUANTITY - value transferred in Wei.
v: QUANTITY - ECDSA recovery id
r: QUANTITY - ECDSA signature r
s: QUANTITY - ECDSA signature s

// Result
{
  "jsonrpc":"2.0",
  "id":1,
  "result":{
    "blockHash":"0x1d59ff54b1eb26b013ce3cb5fc9dab3705b415a67127a003c3e61eb445bb8df2",
    "blockNumber":"0x5daf3b", // 6139707
    "from":"0xa7d9ddbe1f17865597fbd27ec712455208b6b76d",
    "gas":"0xc350", // 50000
    "gasPrice":"0x4a817c800", // 20000000000
    "hash":"0x88df016429689c079f3b2f6ad39fa052532c56795b733da78a91ebe6a713944b",
    "input":"0x68656c6c6f21",
    "nonce":"0x15", // 21
    "to":"0xf02c1c8e6114b1dbe8937a39260b5b0a374432bb",
    "transactionIndex":"0x41", // 65
    "value":"0xf3dbb76162000", // 4290000000000000
    "v":"0x25", // 37
    "r":"0x1b5e176d927f8e9ab405058b2d2457392da3e20f328b16ddabcebc33eaac5fea",
    "s":"0x4ba69724e8f69de52f0125ad8b3c5c2cef33019bac3249e2c0a2192766d1721c"
  }
}

curl https://mainnet.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_getTransactionByHash","params":["0x88df016429689c079f3b2f6ad39fa052532c56795b733da78a91ebe6a713944b"],"id":1}'

curl https://fuji.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_getTransactionByHash","params":["0x88df016429689c079f3b2f6ad39fa052532c56795b733da78a91ebe6a713944b"],"id":1}'

eth_getTransactionCount

Returns the number of transactions sent from an address.

This method will use 30 Compute Units.

Reference: Here

Parameters

DATA, 20 Bytes - address.
QUANTITY|TAG - integer block number, or the string "latest", "earliest" or "pending", see the default block parameter

params: [
  "0x407d73d8a49eeb85d32cf465507dd71d507100c1",
  "latest", // state at the latest block
]

Returns

QUANTITY - String hex value representing integer of the number of transactions sent from this address.

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

curl https://mainnet.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_getTransactionCount","params":["0x407d73d8a49eeb85d32cf465507dd71d507100c1","latest"],"id":1}'

curl https://fuji.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_getTransactionCount","params":["0x407d73d8a49eeb85d32cf465507dd71d507100c1","latest"],"id":1}'

eth_getTransactionReceipt

Returns the receipt of a transaction by transaction hash. Note that the receipt is not available for pending transactions.

This method will use 20 Compute Units.

Reference: Here

Parameters

DATA, 32 Bytes - hash of a transaction

params: ["0x85d995eba9763907fdf35cd2034144dd9d53ce32cbec21349d4b12823c6860c5"]

Returns

Object - A transaction receipt object, 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.
from: DATA, 20 Bytes - address of the sender.
to: DATA, 20 Bytes - address of the receiver. null when its a contract creation transaction.
cumulativeGasUsed : QUANTITY - The total amount of gas used when this transaction was executed in the block.
effectiveGasPrice : QUANTITY - The sum of the base fee and tip paid per unit of gas.
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, otherwise null.
logs: Array - Array of log objects, which this transaction generated.
logsBloom: DATA, 256 Bytes - Bloom filter for light clients to quickly retrieve related logs.
type: DATA - integer of the transaction type, 0x00 for legacy transactions, 0x01 for access list types, 0x02 for dynamic fees. It also returns either :
root : DATA 32 bytes of post-transaction stateroot (pre Byzantium)
status: QUANTITY either 1 (success) or 0 (failure)

// Result
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "blockHash":
      "0xa957d47df264a31badc3ae823e10ac1d444b098d9b73d204c40426e57f47e8c3",
    "blockNumber": "0xeff35f",
    "contractAddress": null, // string of the address if it was created
    "cumulativeGasUsed": "0xa12515",
    "effectiveGasPrice": "0x5a9c688d4",
    "from": "0x6221a9c005f6e47eb398fd867784cacfdcfff4e7",
    "gasUsed": "0xb4c8",
    "logs": [{
      // logs as returned by getFilterLogs, etc.
    }],
    "logsBloom": "0x00...0", // 256 byte bloom filter
    "status": "0x1",
    "to": "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
    "transactionHash":
      "0x85d995eba9763907fdf35cd2034144dd9d53ce32cbec21349d4b12823c6860c5",
    "transactionIndex": "0x66",
    "type": "0x2"
  }

curl https://mainnet.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_getTransactionReceipt","params":["0x85d995eba9763907fdf35cd2034144dd9d53ce32cbec21349d4b12823c6860c5"],"id":1}'

curl https://fuji.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_getTransactionReceipt","params":["0x85d995eba9763907fdf35cd2034144dd9d53ce32cbec21349d4b12823c6860c5"],"id":1}'

eth_getUncleByBlockHashAndIndex

Returns information about a uncle of a block by hash and uncle index position.

This method will use 20 Compute Units.

Reference: Here

Parameters

DATA, 32 Bytes - The hash of a block.
QUANTITY - The uncle's index position.

params: [
  "0xc6ef2fc5426d6ad6fd9e2a26abeab0aa2411b7ab17f30a99d3cb96aed1d1055b",
  "0x0", // 0
]

Returns:

Object - A block object, or null when no block was found:

number: QUANTITY - the block number. null when its pending block.
hash: DATA, 32 Bytes - hash of the block. null when its pending block.
parentHash: DATA, 32 Bytes - hash of the parent block.
nonce: DATA, 8 Bytes - hash of the generated proof-of-work. null when its pending block.
sha3Uncles: DATA, 32 Bytes - SHA3 of the uncles data in the block.
logsBloom: DATA, 256 Bytes - the bloom filter for the logs of the block. null when its pending block.
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.

curl https://mainnet.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_getUncleByBlockHashAndIndex","params":["0xc6ef2fc5426d6ad6fd9e2a26abeab0aa2411b7ab17f30a99d3cb96aed1d1055b", "0x0"],"id":1}'

curl https://fuji.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_getUncleByBlockHashAndIndex","params":["0xc6ef2fc5426d6ad6fd9e2a26abeab0aa2411b7ab17f30a99d3cb96aed1d1055b", "0x0"],"id":1}'

eth_getUncleByBlockNumberAndIndex

Returns information about a uncle of a block by number and uncle index position.

This method will use 20 Compute Units.

Reference: Here

Parameters

QUANTITY|TAG - a block number, or the string "earliest", "latest" or "pending", as in the default block parameter.
QUANTITY - the uncle's index position.

params: [
  "0x29c", // 668
  "0x0", // 0
]

Returns

See eth_getBlockByHash

curl https://mainnet.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_getUncleByBlockNumberAndIndex","params":["0x29c", "0x0"],"id":1}'

curl https://fuji.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_getUncleByBlockNumberAndIndex","params":["0x29c", "0x0"],"id":1}'

eth_getUncleCountByBlockHash

Returns the number of uncles in a block from a block matching the given block hash.

This method will use 20 Compute Units.

Reference: Here

Parameters

DATA, 32 Bytes - hash of a block

params: ["0xb903239f8543d04b5dc1ba6579132b143087c68db1b2168786408fcbce568238"]

Returns

QUANTITY - integer of the number of uncles in this block.

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

curl https://mainnet.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_getUncleCountByBlockHash","params":["0xb903239f8543d04b5dc1ba6579132b143087c68db1b2168786408fcbce568238"],"id":1}'

curl https://fuji.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_getUncleCountByBlockHash","params":["0xb903239f8543d04b5dc1ba6579132b143087c68db1b2168786408fcbce568238"],"id":1}'

eth_getUncleCountByBlockNumber

Returns the number of uncles in a block from a block matching the given block hash.

This method will use 20 Compute Units.

Reference: Here

Parameters

QUANTITY|TAG - integer of a block number, or the string "latest", "earliest" or "pending", see the default block parameter

params: [
  "0xe8", // 232
]

Returns

QUANTITY - integer of the number of uncles in this block.

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

curl https://mainnet.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_getUncleCountByBlockNumber","params":["0xe8"],"id":1}'

curl https://fuji.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_getUncleCountByBlockNumber","params":["0xe8"],"id":1}'

eth_newBlockFilter

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

This method will use 20 Compute Units.

Reference: Here

Parameters

None

Returns

QUANTITY - A filter id.

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

curl https://mainnet.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_newBlockFilter","params":[],"id":73}'

curl https://fuji.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_newBlockFilter","params":[],"id":73}'

eth_newFilter

Creates a filter object, based on filter options, to notify when the state changes (logs). To check if the state has changed, call eth_getFilterChanges.

This method will use 20 Compute Units.

Reference: Here

A note on specifying topic filters: Topics are order-dependent. A transaction with a log with topics [A, B] will be matched by the following 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 - The filter options:

fromBlock: QUANTITY|TAG - (optional, default: "latest") Integer block number, or "latest" for the last mined block, "safe" for the latest safe block, "finalized" for the latest finalized block, or "pending", "earliest" for not yet mined transactions.
toBlock: QUANTITY|TAG - (optional, default: "latest") Integer block number, or "latest" for the last mined block, "safe" for the latest safe block, "finalized" for the latest finalized block, or "pending", "earliest" for not yet mined transactions.
address: DATA|Array, 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.

params: [
  {
    fromBlock: "0x1",
    toBlock: "0x2",
    address: "0x8888f1f195afa192cfee860698584c030f4c9db1",
    topics: [
      "0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b",
      null,
      [
        "0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b",
        "0x0000000000000000000000000aff3454fce5edbc8cca8697c15331677e6ebccc",
      ],
    ],
  },
]

Returns

QUANTITY - A filter id.

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

curl https://mainnet.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_newFilter","params":[{"topics":["0x12341234"]}],"id":73}'

curl https://fuji.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_newFilter","params":[{"topics":["0x12341234"]}],"id":73}'

eth_newPendingTransactionFilter

Creates a filter in the node, to notify when new pending transactions arrive. To check if the state has changed, call eth_getFilterChanges.

This method will use 20 Compute Units.

Reference: Here

Parameters

None

Returns

QUANTITY - A filter id.

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

curl https://mainnet.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_newPendingTransactionFilter","params":[],"id":73}'

curl https://fuji.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_newPendingTransactionFilter","params":[],"id":73}'

eth_sendRawTransaction

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

This method will use 270 Compute Units.

Reference: Here

Parameters

DATA, The signed transaction data.

params: [
  "0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675",
]

Returns

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

Use eth_getTransactionReceipt to get the contract address, after the transaction was mined, when you created a contract.

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

curl https://mainnet.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_sendRawTransaction","params":[{see above}],"id":1}'

curl https://fuji.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_sendRawTransaction","params":[{see above}],"id":1}'

eth_subscribe

Returns an object with data about the sync status or false.

This method will use 10 Compute Units.

Reference: Here

Parameters

subscription name - string - The type of event you want to subscribe to (i.e., newHeads, logs, pendingTransactions, newPendingTransactions). This method supports the following subscription types:

pendingTransactions - Returns full transactions that are sent to the network, marked as pending, and are sent from or to a certain address.\
newPendingTransactions - Returns the hash for all transactions that are added to the pending state and are signed with a key that is available in the node.\
newHeads - Fires a notification each time a new header is appended to the chain, including chain reorganizations.\
logs - Returns logs that are included in new imported blocks and match the given filter criteria.

data - object - (Optional) - Arguments such as an address, multiple addresses, and topics. Note, only logs that are created from these addresses or match the specified topics will return logs.

params: [
  "0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675",
]

Returns

result - string - Hex encoded subscription ID. This ID will be attached to all received events and can also be used to cancel the subscription using eth_unsubscribe.

// Result
{"id":1,"result":"0x9a52eeddc2b289f985c0e23a7d8427c8","jsonrpc":"2.0"}

//Example
{
      "jsonrpc":"2.0",
      "method":"eth_subscription",
      "params":{
          "result":{
          "blockHash":null,
          "blockNumber":null,
          "from":"0xa36452fc31f6f482ad823cd1cf5515177d57667f",
          "gas":"0x1adb0",
          "gasPrice":"0x7735c4d40",
          "hash":"0x50bff0736c713458c92dd1848d12f3354149be1363123dae35e94e0f2a9d56bf",
"input":"0xa9059cbb0000000000000000000000000d0707963952f2fba59dd06f2b425ace40b492fe0000000000000000000000000000000000000000000015b1111266cfca100000",
          "nonce":"0x0",
          "to":"0xea38eaa3c86c8f9b751533ba2e562deb9acded40",
          "transactionIndex":null,
          "value":"0x0",
          "v":"0x26",
          "r":"0x195c2c1ed126088e12d290aa93541677d3e3b1d10f137e11f86b1b9227f01e3b",
          "s":"0x60fc4edbf1527832a2a36dbc1e63ed6193a6eee654472fbebbf88ef1750b5344"},
          "subscription":"0x9a52eeddc2b289f985c0e23a7d8427c8"
      }
  }

wscat -c wss:///mainnet.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/ws

{"jsonrpc":  "2.0",  "id":  1,  "method":"eth_subscribe","params":["newHeads"]}
{"jsonrpc":"2.0","result":"0x56134e7262fbb1419088ba7326557c25","id":1}

wscat -c wss:///fuji.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/ws

{"jsonrpc":  "2.0",  "id":  1,  "method":"eth_subscribe","params":["newHeads"]}
{"jsonrpc":"2.0","result":"0x56134e7262fbb1419088ba7326557c25","id":1}

eth_syncing

Returns an object with data about the sync status or false.

This method will use 5 Compute Units.

Reference: Here

Parameters

None

Returns

Object|Boolean, An object with sync status data or FALSE, when 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

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": {
    startingBlock: '0x384',
    currentBlock: '0x386',
    highestBlock: '0x454'
  }
}
// Or when not syncing
{
  "id":1,
  "jsonrpc": "2.0",
  "result": false
}

curl https://mainnet.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_syncing","params":[],"id":1}'

curl https://fuji.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_syncing","params":[],"id":1}'

eth_uninstallFilter

Uninstalls a filter with given id. Should always be called when watch is no longer needed. Additionally Filters timeout when they aren't requested with for a period of time.

This method will use 10 .

Reference:

Parameters

QUANTITY - The filter id.

Returns

Boolean - true if the filter was successfully uninstalled, otherwise false.

eth_unsubscribe

Cancels an existing subscription so that no further events are sent.

This method will use 10 Compute Units.

Parameters

subscription name - string, same as previously returned from an eth_subscribe call

params: [
  "0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675",
]

Returns

true if a subscription was successfully cancelled, or false if no subscription existed with the given ID.

// Result
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": true
}

wscat -c wss:///mainnet.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/ws

{"jsonrpc":  "2.0",  "id":  1,  "method":"eth_subscribe","params":["newHeads"]}
{"jsonrpc":"2.0","result":"0x56134e7262fbb1419088ba7326557c25","id":1}
## subscription data
{"id": 1, "jsonrpc":  "2.0", "method": "eth_unsubscribe", "params": ["0x56134e7262fbb1419088ba7326557c25"]}
{"jsonrpc":"2.0","result":true,"id":1}

wscat -c wss:///mainnet.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/ws

{"jsonrpc":  "2.0",  "id":  1,  "method":"eth_subscribe","params":["newHeads"]}
{"jsonrpc":"2.0","result":"0x56134e7262fbb1419088ba7326557c25","id":1}
## subscription data
{"id": 1, "jsonrpc":  "2.0", "method": "eth_unsubscribe", "params": ["0x56134e7262fbb1419088ba7326557c25"]}
{"jsonrpc":"2.0","result":true,"id":1}

net_listening

Returns true if client is actively listening for network connections.

This method will use 5 .

Reference:

Parameters

None

Returns

Boolean - true when listening, otherwise false.

net_peerCount

Returns number of peers currently connected to the client.

This method will use 10 .

Reference:

Parameters

None

Returns

QUANTITY - integer of the number of connected peers.

net_version

Returns the current network id.

This method will use 5 Compute Units.

Reference: Here

Parameters

None

Returns

String - The current network id.

The full list of current network IDs is available at chainlist.org. Some common ones are:

1: Ethereum Mainnet
5: Goerli testnet
11155111: Sepolia testnet

// Result
{
  "id":67,
  "jsonrpc": "2.0",
  "result": "3"
}

curl https://mainnet.arbitrum.validationcloud.io/v1/<YOUR_API_KEY_HERE> \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"net_version","params":[],"id":67}'

curl https://mainnet.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"net_version","params":[],"id":67}'

curl https://fuji.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"net_version","params":[],"id":67}'

web3_clientVersion

Returns the current client version.

This method will use 20 Compute Units.

Reference: Here

Parameters

None

Returns

string - The current client version 20 Bytes - addresses owned by the client

// Result
{
    "jsonrpc":"2.0",
    "id":67,
    "result":"Geth/v1.10.26-stable-e5eb32ac/linux-amd64/go1.18.5"
}

curl https://mainnet.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"web3_clientVersion","params":[],"id":67}'

curl https://fuji.avalanche.validationcloud.io/v1/<YOUR_API_KEY_HERE>/ext/bc/C/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"web3_clientVersion","params":[],"id":67}'

web3_sha3

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

This method will use 20 .

Reference:

Parameters

DATA - the data to convert into a SHA3 hash

Returns

DATA - The SHA3 resultant hash of the given string

avax.getAtomicTx

Gets a transaction by its ID. Optional encoding parameter to specify the format for the returned transaction. Can only be hex when a value is provided.

This method will use 10 .

Reference:

Parameters

txID - string - The transaction ID in hex format.
encoding - string - (optional) The encoding format to use. Can only be hex when a value is provided.

Returns

tx - string - The transaction encoded to encoding.
encoding - string - The encoding format.
blockHeight - string - The height of the block which the transaction was included in.

avax.getAtomicTxStatus

Get the status of an atomic transaction sent to the network.

This method will use 10 .

Reference:

Parameters

txID - string - The transaction ID in hex format.

Returns

status is one of:

Accepted: The transaction is (or will be) accepted by every node. Check the blockHeight property
Processing: The transaction is being voted on by this node
Dropped: The transaction was dropped by this node because it thought the transaction invalid
Unknown: The transaction hasn’t been seen by this node

2. blockHeight - string, returned when status is Accepted

avax.getUTXOs

Gets the UTXOs that reference a given address.

This method will use 10 .

Reference:

Parameters

addresses - []string - A list of addresses.
limit - int - (optional) The limit of UTXOs to return. If limit is omitted or greater than 1024, it is set to 1024.
startIndex - object - (optional) If startIndex is omitted, will fetch all UTXOs up to limit. When using pagination (i.e when startIndex is provided), UTXOs are not guaranteed to be unique across multiple calls. That is, a UTXO may appear in the result of the first call, and then again in the second call.

address - string
utxo - string

sourceChain - string - The ID or alias of the chain the asset is being imported from.
encoding - string - (optional) Sets the format for the returned UTXOs. Can only be hex when a value is provided.

Returns

numFetched - int - (optional) Number of UTXOs fetched.
utxos - []string - a list of UTXOs such that each UTXO references at least one address in addresses.
endIndex - object - Denotes the last UTXO returned. To get the next set of UTXOs, use the value of endIndex as startIndex in the next call.

address - string
utxo - string

avax.issueTx

Send a signed transaction to the network. encoding specifies the format of the signed transaction. Can only be hex when a value is provided.

This method will use 10 .

Reference:

Parameters

tx - string - The transaction encoded to encoding.
encoding - string - The encoding format.

Returns

txID - string - The transaction ID in hex format.