Get the balance of an address at a given block.

API v1

Parameters

1. String - The address to get the balance of

2. String - Block to get query for balance

Returns

• String - The current balance for the given address in ATTO.

Sample Curl Request

Sample Curl Response

API v2

Parameters

1. String - The address to get the balance of

2. Number - Block to get query for balance

Returns

• String - The big.Int balance for the given address on a particular block.

Sample Curl Request

Sample Curl Response

Given an account address, returns the number of transactions the account has made.

API v1

Parameters

1. String - Account address

2. String - Block number to query for transaction count. Usually latest, which uses the most recent block.

Returns

• String - Number of transactions the account has made.

Sample Curl Request

curl -d '{
  "jsonrpc": "2.0",
  "method": "hmy_getTransactionCount",
  "params": [
    "one1rgl8538wyygp6ltyl0efkrm0rlpftaertskl80",
    "latest"
  ],
  "id": 1
}' -H "Content-Type:application/json" -X POST "https://api.s0.b.hmny.io"

Sample Curl Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x9"
}

API v2

Parameters

1. String - Account address

2. Number - Block number to query for transaction count.

Returns

• Number - Number of transactions the account has made.

Sample Curl Request

curl -d '{
  "jsonrpc": "2.0",
  "method": "hmyv2_getTransactionCount",
  "params": [
    "one1rgl8538wyygp6ltyl0efkrm0rlpftaertskl80",
    1
  ],
  "id": 1
}' -H "Content-Type:application/json" -X POST "https://api.s0.b.hmny.io"

Sample Curl Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": 9
}

Parameters

None

Returns

QUANTITY - A filter id.

Example

// Request
curl -d '{"jsonrpc":"2.0","method":"eth_newPendingTransactionFilter","params":[],"id":73}' -H "Content-Type:application/json" -X POST "https://api.s0.b.hmny.io"

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

Parameters

None

Returns

QUANTITY - A filter id.

Example

// Request
curl -d '{"jsonrpc":"2.0","method":"eth_newBlockFilter","params":[],"id":73}' -H "Content-Type:application/json" -X POST "https://api.s0.b.hmny.io"

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

Get latest balance of an address.

API v1

Parameters

1. String - The address to get the balance of.

2. String - Block to get query for balance

Returns

• String - The current balance for the given address in ATTO.

Sample Curl Request

curl -d '{
    "id": "1",
    "jsonrpc": "2.0",
    "method": "hmy_getBalance",
    "params": [
        "one1z05g55zamqzfw9qs432n33gycdmyvs38xjemyl", 
        "0x1"
    ]
}' -H "Content-Type:application/json" -X POST "https://api.s0.b.hmny.io"

Sample Curl Response

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "0x6046f35fca29af800"
}

API v2

Parameters

1. String - The address to get the balance of

Returns

• String - The current big.Int balance for the given address.

Sample Curl Request

curl -d '{
    "id": "1",
    "jsonrpc": "2.0",
    "method": "hmyv2_getBalance",
    "params": [
        "one1z05g55zamqzfw9qs432n33gycdmyvs38xjemyl"
    ]
}' -H "Content-Type:application/json" -X POST "https://api.s0.b.hmny.io"

Sample Curl Response

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "1000000000000"
}

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

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

1. Object - The filter options:

2. fromBlock: QUANTITY|TAG - (optional, default: "latest") Integer block number, or "latest" for the last mined block or "pending", "earliest" for not yet mined transactions.

3. toBlock: QUANTITY|TAG - (optional, default: "latest") Integer block number, or "latest" for the last mined block or "pending", "earliest" for not yet mined transactions.

4. address: DATA|Array, 20 Bytes - (optional) Contract address or a list of addresses from which logs should originate.

5. 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.

Example Parameters

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

Returns

QUANTITY - A filter id.

Example

// Request
curl -d '{"jsonrpc":"2.0","method":"hmy_newFilter","params":[{"topics":["0x0000000000000000000000000000000000000000000000000000000012341234"]}],"id":73}' -H "Content-Type:application/json" -X POST "https://api.s0.b.hmny.io"

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

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

Parameters

1. QUANTITY - The filter id.

Example Parameters

params: [
  "0x16" // 22
]

Returns

See hmy_getFilterChanges

Example

// Request
curl -d '{"jsonrpc":"2.0","method":"hmy_getFilterLogs","params":["0x16"],"id":74}' -H "Content-Type:application/json" -X POST "https://api.s0.b.hmny.io"

Result see hmy_getFilterChanges

Parameters

1. 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 the 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.)

Sample Curl Request

Sample Curl Response

Get staking transaction at an index from a given block, specified by number.

API v1

Parameters

1. String - The block's index in the chain.

2. String - The staking transactions index position.

Returns

• hash - String: Hash of the transaction.

• nonce - Number: The number of transactions made by the sender prior to this one.

• blockHash - String: Hash of the block where this transaction was in. null when its pending.

• blockNumber - Number: Block number where this transaction was in. null when its pending.

• transactionIndex - Number: Integer of the transactions index position in the block. null when its pending.

• timestamp - Number: transaction timestamp

• from - String: Address of the sender.

• value - String: Value transferred in ATTO.

• gasPrice - String: Gas price provided by the sender.

• gas - Number: Gas provided by the sender.

• v - String: signature V

• r - String: signature R

• s - String: signature S

• type - String: staking transaction type ("CreateValidator", "EditValidator", "CollectRewards", "Undelegate", "Delegate")

• msg - StakingMsg:

  • CreateValidator:

    • validatorAddress - String: validator address

    • name - String: validator name

    • commissionRate - Number: validator commission rate

    • maxCommissionRate - Number: validator commission rate

    • maxChangeRate - Number: validator max commission rate change

    • minSelfDelegation - Number: min how much validator self delegates

    • maxTotalDelegation - Number: max total delegation to validator

    • amount - Number: stake amount for validator

    • website - String: validator website

    • identity - String: validator kyc identity

    • securityContact - String: validator security contact

    • details - String: additional validator info

    • slotPubKeys - []String: validator bls pub keys

  • EditValidator:

    • validatorAddress - String: validator address

    • name - String: validator name

    • commissionRate - Number: validator commission rate

    • minSelfDelegation - Number: min how much validator self delegates

    • maxTotalDelegation - Number: max total delegation to validator

    • website - String: validator website

    • identity - String: validator kyc identity

    • securityContact - String: validator security contact

    • details - String: additional validator info

    • slotPubKeyToAdd - String: validator bls pub key to add

    • slotPubKeyToRemove - String: validator bls pub key to remove

  • CollectRewards:

    • delegatorAddress - String: address to send rewards

  • Delegate:

    • delegatorAddress - String: delegation delegator address

    • validatorAddress - String: delegation validator address

    • amount - Number: big.Int amount for delegation to validator

  • Undelegate:

    • delegatorAddress - String: undelegation delegator address

    • validatorAddress - String: undelegation validator address

    • amount - Number: big.Int amount for undelegation to delegator

Sample Curl Request

Sample Curl Response

API v2

Parameters

1. Number- The block's index in the chain.

2. Number - The transactions index position.

Returns

• hash - String: Hash of the transaction.

• nonce - Number: The number of transactions made by the sender prior to this one.

• blockHash - String: Hash of the block where this transaction was in. null when its pending.

• blockNumber - Number: Block number where this transaction was in. null when its pending.

• transactionIndex - Number: Integer of the transactions index position in the block. null when its pending.

• timestamp - Number: transaction timestamp

• from - String: Address of the sender.

• value - String: Value transferred in ATTO.

• gasPrice - String: Gas price provided by the sender.

• gas - Number: Gas provided by the sender.

• v - String: signature V

• r - String: signature R

• s - String: signature S

• type - String: staking transaction type ("CreateValidator", "EditValidator", "CollectRewards", "Undelegate", "Delegate")

• msg - StakingMsg:

  • CreateValidator:

    • validatorAddress - String: validator address

    • name - String: validator name

    • commissionRate - Number: validator commission rate

    • maxCommissionRate - Number: validator commission rate

    • maxChangeRate - Number: validator max commission rate change

    • minSelfDelegation - Number: min how much validator self delegates

    • maxTotalDelegation - Number: max total delegation to validator

    • amount - Number: stake amount for validator

    • website - String: validator website

    • identity - String: validator kyc identity

    • securityContact - String: validator security contact

    • details - String: additional validator info

    • slotPubKeys - []String: validator bls pub keys

  • EditValidator:

    • validatorAddress - String: validator address

    • name - String: validator name

    • commissionRate - Number: validator commission rate

    • minSelfDelegation - Number: min how much validator self delegates

    • maxTotalDelegation - Number: max total delegation to validator

    • website - String: validator website

    • identity - String: validator kyc identity

    • securityContact - String: validator security contact

    • details - String: additional validator info

    • slotPubKeyToAdd - String: validator bls pub key to add

    • slotPubKeyToRemove - String: validator bls pub key to remove

  • CollectRewards:

    • delegatorAddress - String: address to send rewards

  • Delegate:

    • delegatorAddress - String: delegation delegator address

    • validatorAddress - String: delegation validator address

    • amount - Number: big.Int amount for delegation to validator

  • Undelegate:

    • delegatorAddress - String: undelegation delegator address

    • validatorAddress - String: undelegation validator address

    • amount - Number: big.Int amount for undelegation to delegator

Sample Curl Request

Sample Curl Response

Get harmony logs for smart contracts or transactions

Parameters

1. Object - The filter options:

2. fromBlock: QUANTITY|TAG - (optional, default: "latest") Integer block number, or "latest" for the last mined block or "pending", "earliest" for not yet mined transactions.

3. toBlock: QUANTITY|TAG - (optional, default: "latest") Integer block number, or "latest" for the last mined block or "pending", "earliest" for not yet mined transactions.

4. address: DATA|Array, 20 Bytes - (optional) Contract address or a list of addresses from which logs should originate.

5. 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.

6. blockhash: DATA, 32 Bytes - (optional) , blockHash is 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 the filter criteria, then neither fromBlock nor toBlock are allowed.

Returns

For filters created with hmy_newBlockFilter the return are block hashes (DATA, 32 Bytes), e.g. ["0x3454645634534..."].

For filters created with hmy_newPendingTransactionFilter the return are transaction hashes (DATA, 32 Bytes), e.g. ["0x6345343454645..."].

For filters created with hmy_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 the 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.)

Sample Curl Request

Sample Curl Response

Get staking transaction by its hash.

API v1

Parameters

1. String - The staking transaction hash.

Returns

• hash - String: Hash of the transaction.

• nonce - Number: The number of transactions made by the sender prior to this one.

• blockHash - String: Hash of the block where this transaction was in. null when its pending.

• blockNumber - Number: Block number where this transaction was in. null when its pending.

• transactionIndex - Number: Integer of the transactions index position in the block. null when its pending.

• timestamp - Number: transaction timestamp

• from - String: Address of the sender.

• value - String: Value transferred in ATTO.

• gasPrice - String: Gas price provided by the sender.

• gas - Number: Gas provided by the sender.

• v - String: signature V

• r - String: signature R

• s - String: signature S

• type - String: staking transaction type ("CreateValidator", "EditValidator", "CollectRewards", "Undelegate", "Delegate")

• msg - StakingMsg:

  • CreateValidator:

    • validatorAddress - String: validator address

    • name - String: validator name

    • commissionRate - Number: validator commission rate

    • maxCommissionRate - Number: validator commission rate

    • maxChangeRate - Number: validator max commission rate change

    • minSelfDelegation - Number: min how much validator self delegates

    • maxTotalDelegation - Number: max total delegation to validator

    • amount - Number: stake amount for validator

    • website - String: validator website

    • identity - String: validator kyc identity

    • securityContact - String: validator security contact

    • details - String: additional validator info

    • slotPubKeys - []String: validator bls pub keys

  • EditValidator:

    • validatorAddress - String: validator address

    • name - String: validator name

    • commissionRate - Number: validator commission rate

    • minSelfDelegation - Number: min how much validator self delegates

    • maxTotalDelegation - Number: max total delegation to validator

    • website - String: validator website

    • identity - String: validator kyc identity

    • securityContact - String: validator security contact

    • details - String: additional validator info

    • slotPubKeyToAdd - String: validator bls pub key to add

    • slotPubKeyToRemove - String: validator bls pub key to remove

  • CollectRewards:

    • delegatorAddress - String: address to send rewards

  • Delegate:

    • delegatorAddress - String: delegation delegator address

    • validatorAddress - String: delegation validator address

    • amount - Number: big.Int amount for delegation to validator

  • Undelegate:

    • delegatorAddress - String: undelegation delegator address

    • validatorAddress - String: undelegation validator address

    • amount - Number: big.Int amount for undelegation to delegator

Sample Curl Request

Sample Curl Response

API v2

Parameters

1. String- The staking transaction hash.

Returns

• hash - String: Hash of the transaction.

• nonce - Number: The number of transactions made by the sender prior to this one.

• blockHash - String: Hash of the block where this transaction was in. null when its pending.

• blockNumber - Number: Block number where this transaction was in. null when its pending.

• transactionIndex - Number: Integer of the transactions index position in the block. null when its pending.

• timestamp - Number: transaction timestamp

• from - String: Address of the sender.

• value - String: Value transferred in ATTO.

• gasPrice - String: Gas price provided by the sender.

• gas - Number: Gas provided by the sender.

• v - String: signature V

• r - String: signature R

• s - String: signature S

• type - String: staking transaction type ("CreateValidator", "EditValidator", "CollectRewards", "Undelegate", "Delegate")

• msg - StakingMsg:

  • CreateValidator:

    • validatorAddress - String: validator address

    • name - String: validator name

    • commissionRate - Number: validator commission rate

    • maxCommissionRate - Number: validator commission rate

    • maxChangeRate - Number: validator max commission rate change

    • minSelfDelegation - Number: min how much validator self delegates

    • maxTotalDelegation - Number: max total delegation to validator

    • amount - Number: stake amount for validator

    • website - String: validator website

    • identity - String: validator kyc identity

    • securityContact - String: validator security contact

    • details - String: additional validator info

    • slotPubKeys - []String: validator bls pub keys

  • EditValidator:

    • validatorAddress - String: validator address

    • name - String: validator name

    • commissionRate - Number: validator commission rate

    • minSelfDelegation - Number: min how much validator self delegates

    • maxTotalDelegation - Number: max total delegation to validator

    • website - String: validator website

    • identity - String: validator kyc identity

    • securityContact - String: validator security contact

    • details - String: additional validator info

    • slotPubKeyToAdd - String: validator bls pub key to add

    • slotPubKeyToRemove - String: validator bls pub key to remove

  • CollectRewards:

    • delegatorAddress - String: address to send rewards

  • Delegate:

    • delegatorAddress - String: delegation delegator address

    • validatorAddress - String: delegation validator address

    • amount - Number: big.Int amount for delegation to validator

  • Undelegate:

    • delegatorAddress - String: undelegation delegator address

    • validatorAddress - String: undelegation validator address

    • amount - Number: big.Int amount for undelegation to delegator

Sample Curl Request

Sample Curl Response

API v1

Returns

Sample Curl Request

Sample Curl Response

API v2

Returns

Sample Curl Request

Sample Curl Response

API v1

Returns

See latest header and blocks format

Sample Curl Request

Sample Curl Response

See latest header and blocks response

API v2

Returns

See latest header and blocks format

Sample Curl Request

Sample Curl Response

See latest header and blocks response

Overview

A staking transaction is like a plain sharded transaction, , but with a single field that is not known ahead of time. This field is the staking message itself, which in the harmony go code base, we refer to as StakeMsg

Input

The input is a single RLP encoded version of a StakingTransaction

Parameters

• String - Transaction encoded in bytes.

Returns

• String - Raw transaction's hash.

Sample Curl Request

Sample Curl Response

API v1

Returns list of pending transactions object. See hmy_getTransactionByHash for result format.

Sample Curl Request

curl --location --request POST 'https://api.s0.b.hmny.io/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "hmy_pendingTransactions",
    "params": [],
    "id": 1
}'

API v2

Returns list of pending transactions object. See hmy_getTransactionByHash for result format.

Sample Curl Request

curl --location --request POST 'https://api.s0.b.hmny.io/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "hmyv2_pendingTransactions",
    "params": [],
    "id": 1
}'

Get transaction receipt from transaction hash.

API v1

Parameters

1. String - The transaction hash.

Returns

• blockHash 32 Bytes - String: Hash of the block where this transaction was in.

• blockNumber - Number: Block number where this transaction was in.

• transactionHash 32 Bytes - String: Hash of the transaction.

• transactionIndex- Number: Integer of the transactions index position in the block.

• from - String: Address of the sender.

• to - String: Address of the receiver. null when its a contract creation transaction.

• contractAddress - String: The contract address created, if the transaction was a contract creation, otherwise null.

• cumulativeGasUsed - Number: The total amount of gas used when this transaction was executed in the block.

• gasUsed- Number: The amount of gas used by this specific transaction alone.

• logs - Array: Array of log objects, which this transaction generated.

Sample Curl Request

curl -d '{
    "jsonrpc":"2.0",
    "method":"hmy_getTransactionReceipt",
    "params":[
    "0x2fa714e40389cbbceda0f77e707035c0ec8aa940e8e10c0d445813177ea71e7d"],
    "id":1
}' -H "Content-Type:application/json" -X POST "https://api.s0.b.hmny.io"

Sample Curl Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "blockHash": "0x6f45cf41eb252b8fc8482082992b516cbb42aa6f39002070e87d287f6007a29c",
    "blockNumber": "0x112e",
    "contractAddress": null,
    "cumulativeGasUsed": "0x5208",
    "from": "0x13e88a505dd804971410ac5538c504c376464227",
    "gasUsed": "0x5208",
    "logs": [],
    "logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
    "root": "0xf28ed9c84cc99e92ff61aa5c6076f697fcc4b288cd86c30048e1387f4e7928fa",
    "shardID": 0,
    "to": "0xe1217e2a4861dd5d50983dad32474bbfd6a7333f",
    "transactionHash": "0x2fa714e40389cbbceda0f77e707035c0ec8aa940e8e10c0d445813177ea71e7d",
    "transactionIndex": "0x0"
  }
}

API v2

Parameters

1. String - The transaction hash.

Returns

• blockHash 32 Bytes - String: Hash of the block where this transaction was in.

• blockNumber - Number: Block number where this transaction was in.

• transactionHash 32 Bytes - String: Hash of the transaction.

• transactionIndex- Number: Integer of the transactions index position in the block.

• from - String: Address of the sender.

• to - String: Address of the receiver. null when its a contract creation transaction.

• contractAddress - String: The contract address created, if the transaction was a contract creation, otherwise null.

• cumulativeGasUsed - Number: The total amount of gas used when this transaction was executed in the block.

• gasUsed- Number: The amount of gas used by this specific transaction alone.

• logs - Array: Array of log objects, which this transaction generated.

Sample Curl Request

curl -d '{
    "jsonrpc":"2.0",
    "method":"hmyv2_getTransactionReceipt",
    "params":[
    "0x2fa714e40389cbbceda0f77e707035c0ec8aa940e8e10c0d445813177ea71e7d"],
    "id":1
}' -H "Content-Type:application/json" -X POST "https://api.s0.b.hmny.io"

Sample Curl Response

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": {
        "blockHash": "0x86a26a6a2ed82c5bdfcbdde757243b35687363723c7d683f54b11c4f747a284b",
        "blockNumber": 17,
        "contractAddress": null,
        "cumulativeGasUsed": 21000,
        "from": "one1spshr72utf6rwxseaz339j09ed8p6f8ke370zj",
        "gasUsed": 21000,
        "logs": [],
        "logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
        "shardID": 0,
        "status": 1,
        "to": "one1r4zyyjqrulf935a479sgqlpa78kz7zlcg2jfen",
        "transactionHash": "0xaab323cdbcba2c9c1be0c7b910bd6efdfbeba03323fad5c3794f1a527ec55ef0",
        "transactionIndex": 0
    }
}

Get the number of transactions in a block by the block's index in the chain.

API v1

Parameters

1. Number - The block number.

Returns

• Number - The number of transactions in the given block.

Sample Curl Request

curl -d '{
    "jsonrpc":"2.0",
    "method":"hmy_getBlockTransactionCountByNumber",
    "params":["0x66"],
    "id":1
}' -H "Content-Type:application/json" -X POST "https://api.s0.b.hmny.io"

Sample Curl Response

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "0x0"
}

API v2

Parameters

1. Number - The block number.

Returns

• Number - The number of transactions in the given block.

Sample Curl Request

curl -d '{
    "jsonrpc":"2.0",
    "method":"hmyv2_getBlockTransactionCountByNumber",
    "params":[1],
    "id":1
}' -H "Content-Type:application/json" -X POST "https://api.s0.b.hmny.io"

Sample Curl Response

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

Get staking transaction at an index from a given block, specified by block hash.

API v1

Parameters

1. String - The block hash.

2. Number - The staking transaction index position.

Returns

• hash - String: Hash of the transaction.

• nonce - Number: The number of transactions made by the sender prior to this one.

• blockHash - String: Hash of the block where this transaction was in. null when its pending.

• blockNumber - Number: Block number where this transaction was in. null when its pending.

• transactionIndex - Number: Integer of the transactions index position in the block. null when its pending.

• timestamp - Number: transaction timestamp

• from - String: Address of the sender.

• value - String: Value transferred in ATTO.

• gasPrice - String: Gas price provided by the sender.

• gas - Number: Gas provided by the sender.

• v - String: signature V

• r - String: signature R

• s - String: signature S

• type - String: staking transaction type ("CreateValidator", "EditValidator", "CollectRewards", "Undelegate", "Delegate")

• msg - StakingMsg:

  • CreateValidator:

    • validatorAddress - String: validator address

    • name - String: validator name

    • commissionRate - Number: validator commission rate

    • maxCommissionRate - Number: validator commission rate

    • maxChangeRate - Number: validator max commission rate change

    • minSelfDelegation - Number: min how much validator self delegates

    • maxTotalDelegation - Number: max total delegation to validator

    • amount - Number: stake amount for validator

    • website - String: validator website

    • identity - String: validator kyc identity

    • securityContact - String: validator security contact

    • details - String: additional validator info

    • slotPubKeys - []String: validator bls pub keys

  • EditValidator:

    • validatorAddress - String: validator address

    • name - String: validator name

    • commissionRate - Number: validator commission rate

    • minSelfDelegation - Number: min how much validator self delegates

    • maxTotalDelegation - Number: max total delegation to validator

    • website - String: validator website

    • identity - String: validator kyc identity

    • securityContact - String: validator security contact

    • details - String: additional validator info

    • slotPubKeyToAdd - String: validator bls pub key to add

    • slotPubKeyToRemove - String: validator bls pub key to remove

  • CollectRewards:

    • delegatorAddress - String: address to send rewards

  • Delegate:

    • delegatorAddress - String: delegation delegator address

    • validatorAddress - String: delegation validator address

    • amount - Number: big.Int amount for delegation to validator

  • Undelegate:

    • delegatorAddress - String: undelegation delegator address

    • validatorAddress - String: undelegation validator address

    • amount - Number: big.Int amount for undelegation to delegator

Sample Curl Request

curl -d '{
    "jsonrpc":"2.0",
    "method":"hmy_getStakingTransactionByBlockHashAndIndex",
    "params":[
        "0x428ead93e632d5255ea3d1fb61b02ab8493cf562a398af2159c33ecd53c62c16",
        "0x0"
    ],
    "id":1
}' -H "Content-Type:application/json" -X POST "https://api.s0.b.hmny.io"

Sample Curl Response

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

API v2

Parameters

1. String - The block hash.

2. Number - The staking transaction index position.

Returns

• hash - String: Hash of the transaction.

• nonce - Number: The number of transactions made by the sender prior to this one.

• blockHash - String: Hash of the block where this transaction was in. null when its pending.

• blockNumber - Number: Block number where this transaction was in. null when its pending.

• transactionIndex - Number: Integer of the transactions index position in the block. null when its pending.

• timestamp - Number: transaction timestamp

• from - String: Address of the sender.

• value - String: Value transferred in ATTO.

• gasPrice - String: Gas price provided by the sender.

• gas - Number: Gas provided by the sender.

• v - String: signature V

• r - String: signature R

• s - String: signature S

• type - String: staking transaction type ("CreateValidator", "EditValidator", "CollectRewards", "Undelegate", "Delegate")

• msg - StakingMsg:

  • CreateValidator:

    • validatorAddress - String: validator address

    • name - String: validator name

    • commissionRate - Number: validator commission rate

    • maxCommissionRate - Number: validator commission rate

    • maxChangeRate - Number: validator max commission rate change

    • minSelfDelegation - Number: min how much validator self delegates

    • maxTotalDelegation - Number: max total delegation to validator

    • amount - Number: stake amount for validator

    • website - String: validator website

    • identity - String: validator kyc identity

    • securityContact - String: validator security contact

    • details - String: additional validator info

    • slotPubKeys - []String: validator bls pub keys

  • EditValidator:

    • validatorAddress - String: validator address

    • name - String: validator name

    • commissionRate - Number: validator commission rate

    • minSelfDelegation - Number: min how much validator self delegates

    • maxTotalDelegation - Number: max total delegation to validator

    • website - String: validator website

    • identity - String: validator kyc identity

    • securityContact - String: validator security contact

    • details - String: additional validator info

    • slotPubKeyToAdd - String: validator bls pub key to add

    • slotPubKeyToRemove - String: validator bls pub key to remove

  • CollectRewards:

    • delegatorAddress - String: address to send rewards

  • Delegate:

    • delegatorAddress - String: delegation delegator address

    • validatorAddress - String: delegation validator address

    • amount - Number: big.Int amount for delegation to validator

  • Undelegate:

    • delegatorAddress - String: undelegation delegator address

    • validatorAddress - String: undelegation validator address

    • amount - Number: big.Int amount for undelegation to delegator

Sample Curl Request

curl -d '{
    "jsonrpc":"2.0",
    "method":"hmyv2_getStakingTransactionByBlockHashAndIndex",
    "params":[
        "0x428ead93e632d5255ea3d1fb61b02ab8493cf562a398af2159c33ecd53c62c16",
        0
    ],
    "id":1
}' -H "Content-Type:application/json" -X POST "https://api.s0.b.hmny.io"

Sample Curl Response

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

API v1

Returns

Array of pending cx receipts in tx pool. See hmy_getCXReceiptByHash for format

Sample Curl Request

curl --location --request POST 'https://api.s0.b.hmny.io/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "hmy_getPendingCXReceipts",
    "params": [],
    "id": 1
}'

Sample Curl Response

See hmy_getCXReceiptByHash response

API v2

Returns

Array of pending cx receipts in tx pool. See hmy_getCXReceiptByHash for format

Sample Curl Request

curl --location --request POST 'https://api.s0.b.hmny.io/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "hmyv2_getPendingCXReceipts",
    "params": [],
    "id": 1
}'

Sample Curl Response

See hmy_getCXReceiptByHash response

Description

hmy_getTransactionsHistory get transactions history for an address

Parameters

• String - one address ("one1...")

• txHistoryArgs - json args

  • txType - String : optional, Received or Sent, shows all transactions by default

  • fullTx - Bool : optional, shows full transaction or just its hash, default is false

  • pageSize - Number : optional, pagination page size, how much tx to show in single page, default is 100

  • pageIndex - Number : optional, pagination which page to show, default is 0

  • txType - String: optional, "ALL", "RECEIVED", "SENT", default is "ALL"

  • order - String: optional, "ASC", "DESC", default is "ASC", order by timestamp

API v1

Returns

• Array - either returns list of transactions

  • hash - String: Hash of the transaction.

  • nonce - Number: The number of transactions made by the sender prior to this one.

  • blockHash - String: Hash of the block where this transaction was in. null when it's pending.

  • blockNumber - Number: Block number where this transaction was in. null when it's pending.

  • transactionIndex - Number: Integer of the transaction's index position in the block. null when its pending.

  • from - String: Address of the sender.

  • to - String: Address of the receiver.

  • value - String: Value transferred in ATTO.

  • gasPrice - String: Gas price provided by the sender.

  • gas - Number: Gas provided by the sender.

  • input - String: The data sent along with the transaction.

• Array of String - or list of transactions hashes

Sample Curl Request 0

curl -d '{
    "jsonrpc": "2.0",
    "method": "hmy_getTransactionsHistory",
    "params": [{
        "address": "one103q7qe5t2505lypvltkqtddaef5tzfxwsse4z7",
        "pageIndex": 0,
        "pageSize": 1000,
        "fullTx": true,
        "txType": "ALL",
        "order": "ASC"
    }],
    "id": 1
}' -H "Content-Type:application/json" -X POST "https://api.s0.b.hmny.io"

Sample Curl Response 0

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": {
        "transactions": [
            {
                "blockHash": "0x0bde901cd3599aa082482777fd0a7fed3f02b7b5a9096b7ea7b2fcb8addaa05d",
                "blockNumber": "0x12",
                "from": "one103q7qe5t2505lypvltkqtddaef5tzfxwsse4z7",
                "gas": "0x5208",
                "gasPrice": "0x3b9aca00",
                "hash": "0x230798fe22abff459b004675bf827a4089326a296fa4165d0c2ad27688e03e0c",
                "input": "0x",
                "nonce": "0x0",
                "to": "one129r9pj3sk0re76f7zs3qz92rggmdgjhtwge62k",
                "transactionIndex": "0x1",
                "value": "0x16345785d8a0000",
                "shardID": 0,
                "toShardID": 0,
                "v": "0x27",
                "r": "0x57766aa1304e97f8b71a9fa54a61b61ce8ef9ad177fcb337dd81827aad184327",
                "s": "0x3b3e5767899e8af5e75d62243a725371f08705b91e2305459e6fd8e8d2646651"
            }
        ]
    }
}

Sample Curl Request 1

curl -d '{
    "jsonrpc": "2.0",
    "method": "hmy_getTransactionsHistory",
    "params": [{
        "address": "one103q7qe5t2505lypvltkqtddaef5tzfxwsse4z7",
        "pageIndex": 0,
        "pageSize": 1000,
        "fullTx": false,
        "txType": "ALL",
        "order": "ASC"
    }],
    "id": 1
}' -H "Content-Type:application/json" -X POST "https://api.s0.b.hmny.io"

Sample Curl Response 1

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": {
        "transactions": [
            "0x230798fe22abff459b004675bf827a4089326a296fa4165d0c2ad27688e03e0c"
        ]
    }
}

API v2

Returns

• Array - either returns list of transactions

  • hash - String: Hash of the transaction.

  • nonce - Number: The number of transactions made by the sender prior to this one.

  • blockHash - String: Hash of the block where this transaction was in. null when it's pending.

  • blockNumber - Number: Block number where this transaction was in. null when it's pending.

  • transactionIndex - Number: Integer of the transaction's index position in the block. null when its pending.

  • from - String: Address of the sender.

  • to - String: Address of the receiver.

  • value - Number: Value transferred in ATTO.

  • gasPrice - Number: Gas price provided by the sender.

  • gas - Number: Gas provided by the sender.

  • input - String: The data sent along with the transaction.

• Array of String - or list of transactions hashes

Sample Curl Request 0

curl -d '{
    "jsonrpc": "2.0",
    "method": "hmyv2_getTransactionsHistory",
    "params": [{
        "address": "one103q7qe5t2505lypvltkqtddaef5tzfxwsse4z7",
        "pageIndex": 0,
        "pageSize": 1000,
        "fullTx": true,
        "txType": "ALL",
        "order": "ASC"
    }],
    "id": 1
}' -H "Content-Type:application/json" -X POST "https://api.s0.b.hmny.io"

Sample Curl Response 0

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": {
        "transactions": [
            {
                "blockHash": "0x6c92a52b0ef172e9352cf69acc945b310592c743a319d488053635e5caec730a",
                "blockNumber": 4,
                "from": "one1spshr72utf6rwxseaz339j09ed8p6f8ke370zj",
                "timestamp": 1580422063,
                "gas": 21000,
                "gasPrice": 1000000000,
                "hash": "0x8b8d3e33442828e4eaed0c335cb6fdb953fbdbaef519261bd6ddec83d529d85e",
                "input": "0x",
                "nonce": 0,
                "to": "one1r4zyyjqrulf935a479sgqlpa78kz7zlcg2jfen",
                "transactionIndex": 0,
                "value": 100000000000000000,
                "shardID": 0,
                "toShardID": 1,
                "v": "0x27",
                "r": "0x55e9f46eca0060821a6bdafe51210132a174e93658ec1b7430ed7cb57a9abc1",
                "s": "0x4105b1d6c7310ea4af44759d717d8a5c9b52731e4877ae45110da43f184905f8"
            },
            {
                "blockHash": "0x6e056a09aa5a96bf3533bb21c0ec2b5dcfe0186215146e68fa2d05eb017e0594",
                "blockNumber": 10,
                "from": "one1spshr72utf6rwxseaz339j09ed8p6f8ke370zj",
                "timestamp": 1580422111,
                "gas": 21000,
                "gasPrice": 1000000000,
                "hash": "0xe3c321cb567de1efaf598364ee343e0d847106b881f4002f894a939de88e8cbc",
                "input": "0x",
                "nonce": 1,
                "to": "one1r4zyyjqrulf935a479sgqlpa78kz7zlcg2jfen",
                "transactionIndex": 0,
                "value": 100000000000000000,
                "shardID": 0,
                "toShardID": 1,
                "v": "0x27",
                "r": "0xd15867fe581a54ce417d98f94abb52fa4358841b5dedcbba0cab19ecd0c0fd4e",
                "s": "0x21c80f304eb1f27875bd1f5baeed6d75cb057e89533886195f2201686fd8e1ff"
            }
        ]
    }
}

Sample Curl Request 1

curl -d '{
    "jsonrpc": "2.0",
    "method": "hmyv2_getTransactionsHistory",
    "params": [{
        "address": "one103q7qe5t2505lypvltkqtddaef5tzfxwsse4z7",
        "pageIndex": 0,
        "pageSize": 1000,
        "fullTx": false,
        "txType": "ALL",
        "order": "ASC"
    }],
    "id": 1
}' -H "Content-Type:application/json" -X POST "https://api.s0.b.hmny.io"

Sample Curl Response 1

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": {
        "transactions": [
            "0x230798fe22abff459b004675bf827a4089326a296fa4165d0c2ad27688e03e0c"
        ]
    }
}

API v1

Parameters

1. String - transactions hash for cx receipt

Returns

• blockHash - String - block hash

• blockNumber - Number - block number

• hash - String - transaction hash

• from - String - from one address

• to - String - to one address

• shardID - Number - shard id from where transaction sent

• toShardID - Number - shard id to where transaction sent

• value - Number - transaction sent value

Sample Curl Request

curl --location --request POST 'https://api.s0.b.hmny.io/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "hmy_getCXReceiptByHash",
    "params": [
        "0x6b106dc5619c86b6c0cb64b17e5c464e8008e08cf0f1bb0e3fa2657fb42daade"
    ],
    "id": 1
}'

Sample Curl Response

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": {
        "blockHash": "0x864e39e8bd21bd983cd78231b5d14bb43a7f43d45bfa6111439956ce4be8bb5d",
        "blockNumber": "0x2b",
        "hash": "0x6b106dc5619c86b6c0cb64b17e5c464e8008e08cf0f1bb0e3fa2657fb42daade",
        "from": "one1uyshu2jgv8w465yc8kkny36thlt2wvel89tcmg",
        "to": "one1r4zyyjqrulf935a479sgqlpa78kz7zlcg2jfen",
        "shardID": 1,
        "toShardID": 0,
        "value": "0x16345785d8a0000"
    }
}

API v2

Parameters

1. String - transactions hash for cx receipt

Returns

• blockHash - String - block hash

• blockNumber - Number - block number

• hash - String - transaction hash

• from - String - from one address

• to - String - to one address

• shardID - Number - shard id from where transaction sent

• toShardID - Number - shard id to where transaction sent

• value - Number - transaction sent value

Sample Curl Request

curl --location --request POST 'https://api.s0.b.hmny.io/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "hmyv2_getCXReceiptByHash",
    "params": [
        "0xc6da1349d2c2fbb5724126fe9e462996f8f8b415275e411d39a72945d3cb05ef"
    ],
    "id": 1
}'

Sample Curl Response

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": {
        "blockHash": "0x864e39e8bd21bd983cd78231b5d14bb43a7f43d45bfa6111439956ce4be8bb5d",
        "blockNumber": 43,
        "hash": "0x6b106dc5619c86b6c0cb64b17e5c464e8008e08cf0f1bb0e3fa2657fb42daade",
        "from": "one1uyshu2jgv8w465yc8kkny36thlt2wvel89tcmg",
        "to": "one1r4zyyjqrulf935a479sgqlpa78kz7zlcg2jfen",
        "shardID": 1,
        "toShardID": 0,
        "value": 100000000000000000
    }
}

Get the number of transactions in a block by the block's hash.

API v1

Parameters

String - The block hash.

Returns

• Number - The number of transactions in the given block.

Sample Curl Request

curl -d '{
    "jsonrpc":"2.0",
    "method":"hmy_getBlockTransactionCountByHash",
    "params":["0x660fe701f580ffebfcfb4af1836c9929c1fd0014d8d79d60749fecf52df7a90d"],
    "id":1
}' -H "Content-Type:application/json" -X POST "https://api.s0.b.hmny.io"

Sample Curl Response

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "0x0"
}

API v2

Parameters

1. String - The block hash.

Returns

• Number - The number of transactions in the given block.

Sample Curl Request

curl -d '{
    "jsonrpc":"2.0",
    "method":"hmyv2_getBlockTransactionCountByHash",
    "params":["0x660fe701f580ffebfcfb4af1836c9929c1fd0014d8d79d60749fecf52df7a90d"],
    "id":1
}' -H "Content-Type:application/json" -X POST "https://api.s0.b.hmny.io"

Sample Curl Response

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

Send a raw transaction encoded in bytes.

Parameters

• String - Transaction encoded in bytes.

Returns

• String - Raw transaction's hash.

Sample Curl Request

curl -d '{
    "jsonrpc":"2.0",
    "method":"hmy_sendRawTransaction",
    "params":[
      "0xf869808082520880809410a02a0a6e95a676ae23e2db04bea3d1b8b7ca2e880de0b6b3a7640000801ba0c8d0c5390086999b5b5a93373953c3c94b44dc8fd06d88a421a7c2461e9e4482a0730d7859d1e3109d499bcd75f00700729b9bc17b03940da4f84b6ea784f51eb1"
    ],
    "id":1
}' -H "Content-Type:application/json" -X POST "https://api.s0.b.hmny.io"

Sample Curl Response

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "0x1156a044c73f85d876780f3bd86d7b0665c2d1b6c8a1abaaaedc08c13968a598"
}

Get transaction at an index from a given block, specified by number.

API v1

Parameters

1. String - The block's index in the chain.

2. String - The transactions index position.

Returns

• hash - String: Hash of the transaction.

• nonce - Number: The number of transactions made by the sender prior to this one.

• blockHash - String: Hash of the block where this transaction was in. null when its pending.

• blockNumber - Number: Block number where this transaction was in. null when its pending.

• transactionIndex - Number: Integer of the transactions index position in the block. null when its pending.

• from - String: Address of the sender.

• to - String: Address of the receiver. null when its a contract creation transaction.

• value - String: Value transferred in ATTO.

• gasPrice - String: Gas price provided by the sender.

• gas - Number: Gas provided by the sender.

• input - String: The data sent along with the transaction.

Sample Curl Request

curl -d '{
    "jsonrpc":"2.0",
    "method":"hmy_getTransactionByBlockNumberAndIndex",
    "params":[
        "0x4",
        "0x0"
    ],
    "id":1
}' -H 'Content-Type:application/json' -X POST 'https://api.s0.b.hmny.io'

Sample Curl Response

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": {
        "blockHash": "0x428ead93e632d5255ea3d1fb61b02ab8493cf562a398af2159c33ecd53c62c16",
        "blockNumber": "0x4",
        "from": "0x0b585f8daefbc68a311fbd4cb20d9174ad174016",
        "gas": "0x5208",
        "gasPrice": "0x0",
        "hash": "0xa7bb2c7cbfe4f5d6cf061aacd9d0dce7660d1f82da63dd7c76d9e856c1dc0278",
        "input": "0x",
        "nonce": "0x0",
        "to": "0x3aea49553ce2e478f1c0c5acc304a84f5f4d1f98",
        "transactionIndex": "0x0",
        "value": "0xde0b6b3a7640000",
        "v": "0x1b",
        "r": "0x3cb6eedb11cad81f1ab52d72f46dcea0b3d7f46beaf40e83660b165546db5fc6",
        "s": "0x1bc4b99089ab7d3ec17eae9d8a366feac87f9a76dd3ae031abfb86359b020551"
    }
}

API v2

Parameters

1. Number- The block's index in the chain.

2. Number - The transactions index position.

Returns

• hash - String: Hash of the transaction.

• nonce - Number: The number of transactions made by the sender prior to this one.

• blockHash - String: Hash of the block where this transaction was in. null when its pending.

• blockNumber - Number: Block number where this transaction was in. null when its pending.

• transactionIndex - Number: Integer of the transactions index position in the block. null when its pending.

• from - String: Address of the sender.

• to - String: Address of the receiver. null when its a contract creation transaction.

• value - Number: Value transferred in ATTO.

• gasPrice - Number: Gas price provided by the sender.

• gas - Number: Gas provided by the sender.

• input - String: The data sent along with the transaction.

Sample Curl Request

curl -d '{
    "jsonrpc":"2.0",
    "method":"hmyv2_getTransactionByBlockNumberAndIndex",
    "params":[
        4,
        0
    ],
    "id":1
}' -H 'Content-Type:application/json' -X POST 'https://api.s0.b.hmny.io'

Sample Curl Response

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