Data API
Fetch block and transaction related data
The data API methods can be used to fetch block, transaction, and other related data from the chain. The available methods have been classified based on the endpoints and listed below.

Method: POST
URL: /network/list
Sample Request:
{
"metadata": {}
}
Sample Response:
{
"network_identifiers": [
{
"blockchain": "ont",
"network": "mainnet"
}
]
}

Method: POST
URL: /network/options
Sample Request:
{
"network_identifier": {
"blockchain": "ont",
"network": "mainnet"
}
}
Sample Response:
{
"version": {
"rosetta_version": "1.4.0",
"node_version": "1.11.0"
},
"allow": {
"operation_statuses": [
{
"status": "SUCCESS",
"successful": true
},
{
"status": "FAILED",
"successful": false
}
],
"operation_types": ["transfer"],
"errors": [
{
"code": 400,
"message": "network identifier is not supported",
"retriable": false
},
{
"code": 401,
"message": "block identifier is empty",
"retriable": false
},
{
"code": 402,
"message": "block index is invalid",
"retriable": false
},
{
"code": 403,
"message": "get block failed",
"retriable": true
},
{
"code": 404,
"message": "block hash is invalid",
"retriable": false
},
{
"code": 405,
"message": "get transaction failed",
"retriable": true
},
{
"code": 406,
"message": "transaction hash is invalid",
"retriable": false
},
{
"code": 407,
"message": "commit transaction failed",
"retriable": false
},
{
"code": 408,
"message": "tx hash is invalid",
"retriable": false
},
{
"code": 409,
"message": "block is not exist",
"retriable": false
},
{
"code": 500,
"message": "service not realize",
"retriable": false
},
{
"code": 501,
"message": "addr is invalid",
"retriable": true
},
{
"code": 502,
"message": "get balance error",
"retriable": true
},
{
"code": 503,
"message": "parse int error",
"retriable": true
},
{
"code": 504,
"message": "json marshal failed",
"retriable": false
},
{
"code": 505,
"message": "parse tx payload failed",
"retriable": false
},
{
"code": 506,
"message": "currency not config",
"retriable": false
},
{
"code": 507,
"message": "params error",
"retriable": true
},
{
"code": 508,
"message": "contract addr invalid",
"retriable": true
},
{
"code": 509,
"message": "preExecute contract failed",
"retriable": false
},
{
"code": 510,
"message": "query balance failed",
"retriable": true
}
]
}
}

Method: POST
URL: /network/status
Sample Request:
{
"network_identifier": {
"blockchain": "ont",
"network": "mainnet"
}
}
Sample Response:
{
"current_block_identifier": {
"index": 4789126,
"hash": "76fcf0fbd5e979721fe52e472ac79eb26f4bc502c371508574c0e03386be20e6"
},
"current_block_timestamp": 1560312815000,
"genesis_block_identifier": {
"index": 0,
"hash": "1b8fa7f242d0eeb4395f89cbb59e4c29634047e33245c4914306e78a88e14ce5"
},
"peers": [
{
"peer_id": "000000000000000000000000b41fe9ceaaaa4d7b",
"metadata": {
"address": "40.113.237.243:20338",
"height": 8454242
}
},
{
"peer_id": "000000000000000000000000a4f0c524d8efd6a8",
"metadata": {
"address": "139.219.141.104:20338",
"height": 8454242
}
},
{
"peer_id": "0000000000000000000000008e6528f4659f3112",
"metadata": {
"address": "50.18.219.74:20338",
"height": 8454242
}
}
]
}

Method: POST
URL: /account/balance
Sample Request:
{
"network_identifier": {
"blockchain": "ont",
"network": "mainnet"
},
"account_identifier": {
"address": "AFmseVrdL9f9oyCzZefL9tG6UbviEH9ugK",
"metadata": {}
},
"block_identifier": {
"index": 310
}
}
Sample Response:
{
"block_identifier": {
"index": 310,
"hash": "11405500403779cff364803bbd7fe4dc74ba9119015fd79473c188b727769c52"
},
"balances": [
{
"value": "14700000000000000",
"currency": {
"symbol": "ONT",
"decimals": 9,
"metadata": {
"ContractAddress": "0100000000000000000000000000000000000000",
"TokenType": "Governance Token"
}
}
},
{
"value": "1750000140000000000000",
"currency": {
"symbol": "ONG",
"decimals": 18,
"metadata": {
"ContractAddress": "0200000000000000000000000000000000000000",
"TokenType": "Utility Token"
}
}
}
]
}

Method: POST
URL: /block
Sample Request:
{
"network_identifier": {
"blockchain": "ont",
"network": "mainnet"
},
"block_identifier": {
"index": 54
}
}
{
"block": {
"block_identifier": {
"index": 54,
"hash": "790ea8942e5722c75ba638312caa8c1380c41da4c145d6493ae510eb6017c5f3"
},
"parent_block_identifier": {
"index": 53,
"hash": "2b52c7fcdbdcd362211e1646fa6351c8f6fd4cbfa520fe7857133e59061ff348"
},
"timestamp": 1530389834000,
"transactions": [
{
"transaction_identifier": {
"hash": "20247d9df50d830b8978a5c49313a6f8a118fd5bb9c2950e3c7f95f5ac6410f6"
},
"operations": [
{
"operation_identifier": {
"index": 0
},
"type": "transfer",
"status": "SUCCESS",
"account": {
"address": "AJMFNZL5jGjZJEhBrJfVLHJeJ3KwiczJ6B"
},
"amount": {
"value": "-1000000000000000000",
"currency": {
"symbol": "ONT",
"decimals": 9,
"metadata": {
"ContractAddress": "0100000000000000000000000000000000000000",
"TokenType": "Governance Token"
}
}
}
},
{
"operation_identifier": {
"index": 1
},
"related_operations": [
{
"index": 0
}
],
"type": "transfer",
"status": "SUCCESS",
"account": {
"address": "AWyEMxiLUVr5MeVJe3Fw5Xsij7iZUmfYyk"
},
"amount": {
"value": "1000000000000000000",
"currency": {
"symbol": "ONT",
"decimals": 9,
"metadata": {
"ContractAddress": "0100000000000000000000000000000000000000",
"TokenType": "Governance Token"
}
}
}
}
]
}
]
}
}
Please note that the transaction record consists of two operations, i.e. the from operation, and the to operation. The transaction amount for the from operation is negative, while the amount for the to operation is equal and positive.
The currency field contains token details. The two tokens are denoted in the following manner:
ONT Parameters
{
"symbol": "ONT",
"decimals": 9,
"metadata": {
"ContractAddress": "0100000000000000000000000000000000000000",
"TokenType": "Governance Token"
}
}
ONG Parameters
{
"symbol": "ONG",
"decimals": 18,
"metadata": {
"ContractAddress": "0200000000000000000000000000000000000000",
"TokenType": "Utility Token"
}
}

Method: POST
URL: /block/transaction
Sample Request:
{
"network_identifier": {
"blockchain": "ont",
"network": "mainnet"
},
"block_identifier": {
"index": 54,
"hash": "790ea8942e5722c75ba638312caa8c1380c41da4c145d6493ae510eb6017c5f3"
},
"transaction_identifier": {
"hash": "20247d9df50d830b8978a5c49313a6f8a118fd5bb9c2950e3c7f95f5ac6410f6"
}
}
Sample Response:
{
"transaction": {
"transaction_identifier": {
"hash": "20247d9df50d830b8978a5c49313a6f8a118fd5bb9c2950e3c7f95f5ac6410f6"
},
"operations": [
{
"operation_identifier": {
"index": 0
},
"type": "transfer",
"status": "SUCCESS",
"account": {
"address": "AJMFNZL5jGjZJEhBrJfVLHJeJ3KwiczJ6B"
},
"amount": {
"value": "-1000000000000000000",
"currency": {
"symbol": "ONT",
"decimals": 9,
"metadata": {
"ContractAddress": "0100000000000000000000000000000000000000",
"TokenType": "Governance Token"
}
}
}
},
{
"operation_identifier": {
"index": 1
},
"related_operations": [
{
"index": 0
}
],
"type": "transfer",
"status": "SUCCESS",
"account": {
"address": "AWyEMxiLUVr5MeVJe3Fw5Xsij7iZUmfYyk"
},
"amount": {
"value": "1000000000000000000",
"currency": {
"symbol": "ONT",
"decimals": 9,
"metadata": {
"ContractAddress": "0100000000000000000000000000000000000000",
"TokenType": "Governance Token"
}
}
}
}
]
}
}

Method: POST
URL: /mempool
Sample Request:
{
"network_identifier": {
"blockchain": "ont",
"network": "mainnet"
}
}
Sample Response:
{
"transaction_identifiers": [
{
"hash": "<tx hash>"
}
]
}

Method: POST
URL: /mempool/transaction
Sample Request:
{
"network_identifier": {
"blockchain": "ont",
"network": "mainnet"
},
"transaction_identifier": {
"hash": "20247d9df50d830b8978a5c49313a6f8a118fd5bb9c2950e3c7f95f5ac6410f6"
}
}
Sample Response:
{
"transaction": {
"transaction_identifier": {
"hash": "20247d9df50d830b8978a5c49313a6f8a118fd5bb9c2950e3c7f95f5ac6410f6"
},
"operations": [
{
"operation_identifier": {
"index": 0
},
"type": "transfer",
"status": "SUCCESS",
"account": {
"address": "AJMFNZL5jGjZJEhBrJfVLHJeJ3KwiczJ6B"
},
"amount": {
"value": "-1000000000000000000",
"currency": {
"symbol": "ONT",
"decimals": 9,
"metadata": {
"ContractAddress": "0100000000000000000000000000000000000000",
"TokenType": "Governance Token"
}
}
}
},
{
"operation_identifier": {
"index": 1
},
"related_operations": [
{
"index": 0
}
],
"type": "transfer",
"status": "SUCCESS",
"account": {
"address": "AWyEMxiLUVr5MeVJe3Fw5Xsij7iZUmfYyk"
},
"amount": {
"value": "1000000000000000000",
"currency": {
"symbol": "ONT",
"decimals": 9,
"metadata": {
"ContractAddress": "0100000000000000000000000000000000000000",
"TokenType": "Governance Token"
}
}
}
}
]
}
}
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On this page
Network
Fetch the list of available networks
Fetch network options
Fetch the network status
Account
Fetch account balance
Block
Fetch block details
Fetch transaction information from a block
Mempool
Fetch all mempool transactions
Fetch details for a mempool transaction