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APIs

Database API

Objects

get_objects(ids)

Get the objects corresponding to the provided IDs.

If any of the provided IDs does not map to an object, a null is returned in its position.

Parameters
Option Description
const vector<object_id_type>& ids an array of object IDs, e.g. ["1.2.1", "1.2.2", ...]
Example
{
    "id": 4,
    "method": "call",
    "params": [
        DATABASE_API_ID,
        "get_objects",
        [
            [
                "1.2.1",
                "1.2.2"
            ]
        ]
    ]
}
Returns

The objects retrieved, in the order they are mentioned in ids.

{
    "id": 4,
    "jsonrpc": "2.0",
    "result": [
        {
            "id": "1.2.1",
            "membership_expiration_date": "2106-02-07T06:28:15",
            "registrar": "1.2.1",
            "referrer": "1.2.1",
            "lifetime_referrer": "1.2.1",
            "network_fee_percentage": 0,
            "lifetime_referrer_fee_percentage": 10000,
            "referrer_rewards_percentage": 0,
            "name": "placeholder-account",
            "active": {
                "weight_threshold": 1,
                "account_auths": [],
                "key_auths": []
            },
            "echorand_key": "ECHODaQencDTLD5u6LGk9JNaMoJBh6sAkGchMnZPjtJXdvG3",
            "options": {
                "voting_account": "1.2.5",
                "delegating_account": "1.2.5",
                "num_committee": 0,
                "votes": [],
                "extensions": []
            },
            "statistics": "2.6.1",
            "whitelisting_accounts": [],
            "blacklisting_accounts": [],
            "whitelisted_accounts": [],
            "blacklisted_accounts": [],
            "active_special_authority": [
                0,
                {}
            ],
            "top_n_control_flags": 0,
            "extensions": []
        },
        {
            "id": "1.2.2",
            "membership_expiration_date": "2106-02-07T06:28:15",
            "registrar": "1.2.2",
            "referrer": "1.2.2",
            "lifetime_referrer": "1.2.2",
            "network_fee_percentage": 2000,
            "lifetime_referrer_fee_percentage": 8000,
            "referrer_rewards_percentage": 0,
            "name": "relaxed-committee-account",
            "active": {
                "weight_threshold": 56427,
                "account_auths": [
                    [
                        "1.2.6",
                        37368
                    ],
                    [
                        "1.2.10",
                        38116
                    ],
                    [
                        "1.2.14",
                        37368
                    ]
                ],
                "key_auths": []
            },
            "echorand_key": "ECHODaQencDTLD5u6LGk9JNaMoJBh6sAkGchMnZPjtJXdvG3",
            "options": {
                "voting_account": "1.2.5",
                "delegating_account": "1.2.5",
                "num_committee": 0,
                "votes": [],
                "extensions": []
            },
            "statistics": "2.6.2",
            "whitelisting_accounts": [],
            "blacklisting_accounts": [],
            "whitelisted_accounts": [],
            "blacklisted_accounts": [],
            "active_special_authority": [
                0,
                {}
            ],
            "top_n_control_flags": 0,
            "extensions": []
        }
    ]
}

Subscriptions

set_subscribe_callback(callback, clear_filter)

Subscribe to updates.

Parameters
Option Description
function<void(const variant&)> callback global subscription callback can be registered
clear_filter whether subscribe to universal object creation and removal events

If clear_filter is set to true, the API server will notify all newly created objects and ID of all newly removed objects to the client, no matter whether client subscribed to the objects

Notice example
{
    "method": "notice",
    "params": [ 
        SUBSCRIPTION_ID,
        [
            [
                {
                    "id": "2.1.0", ...
                },
                {
                    "id": ...
                },
                {
                    "id": ...
                },
                {
                    "id": ...
                }
            ]
        ]
    ],
}

set_pending_transaction_callback(callback)

Subscribe to pending transactions.

Parameters
Option Description
function<void(const variant&)> callback notifications for incoming unconfirmed transactions

set_block_applied_callback(callback)

Subscribe to block applications.

Parameters
Option Description
function<void(const variant& block_id)> callback gives a notification whenever the block blockid is applied to the blockchain

cancel_all_subscriptions()

Stop receiving any notifications. Unsubscribes from all subscribed objects.

Blocks and transactions

get_block_header(block_num)

Retrieve a block header.

Parameters
Option Description
uint32_t block_num height of the block whose header should be returned
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_block_header",
        [
            "1000"
        ]
    ]
}
Returns

Header of the referenced block, or null if no matching block was found.

{
    "id": 4,
    "jsonrpc": "2.0",
    "result": {
        "previous": "000003e7db7017a9a894ab68b0bd6e29a3a8ae03",
        "timestamp": "2019-06-25T07:13:12",
        "account": "1.2.8",
        "transaction_merkle_root": "0000000000000000000000000000000000000000",
        "vm_root": "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421.56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421 0.9a71ff66a2f503e4e96c4e9a2521d6a710f2d373b422332029da170d78fa1a68",
        "round": 1000,
        "extensions": []
    }
}

get_block_header_batch(block_nums)

Retrieve multiple block header by block numbers.

Parameters
Option Description
const vector<uint32_t> block_nums vector containing heights of the block whose header should be returned
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_block_header_batch",
        [
            "10",
            "20",
            "30", ...
        ]
    ]
}
Returns

Array of headers of the referenced blocks, or null if no matching block was found.

{
    "id": 4,
    "jsonrpc": "2.0",
    "result": [
        [
            10,
            {
                "previous": "00000009e0d2ebc49d9cc34c271d2585345aea57",
                "timestamp": "2019-06-25T06:08:32",
                "account": "1.2.10",
                "transaction_merkle_root": "0000000000000000000000000000000000000000",
                "vm_root": "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421.56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421 0.9a71ff66a2f503e4e96c4e9a2521d6a710f2d373b422332029da170d78fa1a68",
                "round": 10,
                "extensions": []
            }
        ],
        [
            20,
            {
                "previous": "0000001315198620982920b66c2f998f3bedc704",
                "timestamp": "2019-06-25T06:09:04",
                "account": "1.2.8",
                "transaction_merkle_root": "0000000000000000000000000000000000000000",
                "vm_root": "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421.56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421 0.9a71ff66a2f503e4e96c4e9a2521d6a710f2d373b422332029da170d78fa1a68",
                "round": 20,
                "extensions": []
            }
        ],
        [
            30,
            {
                "previous": "0000001d8e1bfa025ddcb0e9dc938e2fe56bee64",
                "timestamp": "2019-06-25T06:09:36",
                "account": "1.2.10",
                "transaction_merkle_root": "0000000000000000000000000000000000000000",
                "vm_root": "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421.56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421 0.9a71ff66a2f503e4e96c4e9a2521d6a710f2d373b422332029da170d78fa1a68",
                "round": 30,
                "extensions": []
            }
        ]
    ]
}

get_block(block_num)

Retrieve a full, signed block.

Parameters
Option Description
uint32_t block_num height of the block to be returned
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_block",
        [
            "1000"
        ]
    ]
}
Returns

The referenced block, or null if no matching block was found.

{
    "id": 4,
    "jsonrpc": "2.0",
    "result": {
        "previous": "000003e7db7017a9a894ab68b0bd6e29a3a8ae03",
        "timestamp": "2019-06-25T07:13:12",
        "account": "1.2.8",
        "transaction_merkle_root": "0000000000000000000000000000000000000000",
        "vm_root": "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421.56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421 0.9a71ff66a2f503e4e96c4e9a2521d6a710f2d373b422332029da170d78fa1a68",
        "round": 1000,
        "extensions": [],
        "ed_signature": "e96ab7d670280cfde4a9255a5abe0161f946f5be5427a33778064e705f85aea82f453b01988b64d941e13abc0de5f9c5596d6838a946e06a783e758a8195a801",
        "rand": "6b0fa959096a569810a9647034c7cdb4cd0ac30ccddcd5884ed24eb17bf68b6b",
        "cert": {
            "_rand": "6b0fa959096a569810a9647034c7cdb4cd0ac30ccddcd5884ed24eb17bf68b6b",
            "_block_hash": "000003e8c6a3b58cd0f3ccbec0af5fde717077da",
            "_producer": 8,
            "_signatures": [
                {
                    "_step": 4,
                    "_value": 0,
                    "_signer": 10,
                    "_fallback": 0,
                    "_bba_sign": "a40faf83ad8b89bd0be170638931ef9ef2c898c3d8bffbb3bf33e25139b67df7c8e106659489aa56d04518e2eca184512e743b6489b6773993dcbc529741a006"
                },
                {
                    "_step": 4,
                    "_value": 0,
                    "_signer": 9,
                    "_fallback": 0,
                    "_bba_sign": "b7ed84d12d81fb830dc54f99a50cd15781ab65634dbd2747176c16996f135d70f5aa69e0769d97e7cff1fe75296f5ad0f411f6dbe209d669e4957b55d99b750f"
                },
                {
                    "_step": 4,
                    "_value": 0,
                    "_signer": 13,
                    "_fallback": 0,
                    "_bba_sign": "defb6d7f4223b3a019dcd14a243b8bbaedc9e3c76fa1f945d8fa5b98b4416f3f007dd17966810509dc0c9e5ba598fe944b6edb6a6f11e2a8df210bec8ee0820d"
                },
                {
                    "_step": 4,
                    "_value": 0,
                    "_signer": 14,
                    "_fallback": 0,
                    "_bba_sign": "93c4d2a3f44257287f897c5be940d09fe91a04fb28943c29e7ea7acf0a073e3c99882baaae57f369f0f2027b789a627d36302f303c1d681d22a62d5e09f7eb06"
                },
                {
                    "_step": 4,
                    "_value": 0,
                    "_signer": 12,
                    "_fallback": 0,
                    "_bba_sign": "05157cc34d128cd206ad7dfdb1cd9592f79ebcb58da5b6a82256fcb88b71610a1ef2df0261bb34aed814169c6141317facb1629c12e1671d05e61a1b4e517c07"
                }
            ]
        },
        "transactions": []
    }
}

get_block_tx_number(id)

Get the total number of transactions in block.

Parameters
Option Description
const block_id_type(fc::ripemd160) id ID of the block to retrieve
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_block_tx_number",
        [
            "000003e835f96c81ce14fea203ad5658f8b2f5b1"
        ]
    ]
}
Returns

If block was found total number of transaction in block, or null if no matching block was found.

get_block_virtual_ops(block_num)

Get virtual ops from the block.

Parameters
Option Description
uint32_t block_num height of the block to be returned
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_block_virtual_ops",
        [
            "7429"
        ]
    ]
}
Returns

Array of operation history objects, or null if no matching operation was found.

{
    "id": 4,
    "jsonrpc": "2.0",
    "result": [
        {
            "id": "1.10.448",
            "op": [
                53,
                {
                    "fee": {
                        "amount": 0,
                        "asset_id": "1.3.0"
                    },
                    "value": {
                        "amount": 99448,
                        "asset_id": "1.3.1"
                    },
                    "account": "1.2.21",
                    "deposit_id": "1.18.5",
                    "extensions": []
                }
            ],
            "result": [
                0,
                {}
            ],
            "block_num": 7429,
            "trx_in_block": 6,
            "op_in_trx": 0,
            "virtual_op": 3886,
            "extensions": []
        }
    ]
}

get_transaction(block_num, trx_in_block)

Fetch an individual transaction.

Parameters
Option Description
uint32_t block_num height of the block in which the transaction resides
uint32_t trx_in_block index of the transaction in the block
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_transaction",
        [
            "1000",
            "10"
        ]
    ]
}
Returns

A processed transaction object.

get_recent_transaction_by_id(id)

If the transaction has not expired, this method will return the transaction for the given ID or it will return null if it is not known. Just because it is not known does not mean it wasn’t included in the blockchain.

Parameters
Option Description
const transaction_id_type(fc::ripemd160) id ID of the transaction
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_recent_transaction_by_id",
        [
            "a4002bfb11e667ed67ea40c20774b99a705f58c3"
        ]
    ]
}
Returns

A signed transaction object.

Globals

get_chain_properties()

Retrieve the chain property object associated with the chain.

Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_chain_properties",
        []
    ]
}
Returns
{
    "id": 4,
    "jsonrpc": "2.0",
    "result": {
        "id": "2.10.0",
        "chain_id": "31cde47f6b94908c2b2ed67c3365c7f58bb744dac145ecf6dc0941e1167c34ab",
        "immutable_parameters": {
            "min_committee_member_count": 9,
            "num_special_accounts": 0,
            "num_special_assets": 0
        },
        "extensions": []
    }
}

get_global_properties()

Retrieve the current global property object.

Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_global_properties",
        []
    ]
}
Returns
{
    "id": 4,
    "jsonrpc": "2.0",
    "result": {
        "id": "2.0.0",
        "parameters": {
            "current_fees": {
                "parameters": [
                    [
                        0,
                        {
                            "fee": 20
                        }
                    ], 
                    [
                        ...
                    ], 
                        5,
                        {
                            "basic_fee": 500000,
                            "premium_fee": 200000000,
                            "price_per_kbyte": 100000
                        }
                    ],
                    [
                        6,
                        {
                            "fee": 2000000,
                            "price_per_kbyte": 100000
                        }
                    ],
                    [
                        7,
                        {
                            "fee": 300000
                        }
                    ],
                    [
                        8,
                        {
                            "membership_annual_fee": 200000000,
                            "membership_lifetime_fee": 1000000000
                        }
                    ],
                    [
                        9,
                        {
                            "fee": 50000000
                        }
                    ],
                    [
                        10,
                        {
                            "symbol3": 500,
                            "symbol4": 300,
                            "long_symbol": 500,
                            "price_per_kbyte": 10
                        }
                    ], ...
                ],
                "scale": 10000
            },
            "block_interval": 5,
            "maintenance_interval": 86400,
            "maintenance_duration_seconds": 10,
            "committee_proposal_review_period": 3600,
            "maximum_transaction_size": 2097152,
            "maximum_block_size": 5242880,
            "maximum_time_until_expiration": 86400,
            "maximum_proposal_lifetime": 2419200,
            "maximum_asset_whitelist_authorities": 10,
            "maximum_asset_feed_publishers": 10,
            "maximum_committee_count": 1001,
            "maximum_authority_membership": 10,
            "reserve_percent_of_fee": 2000,
            "network_percent_of_fee": 2000,
            "lifetime_referrer_percent_of_fee": 3000,
            "cashback_vesting_period_seconds": 31536000,
            "cashback_vesting_threshold": 10000000,
            "count_non_member_votes": true,
            "allow_non_member_whitelists": false,
            "max_predicate_opcode": 1,
            "fee_liquidation_threshold": 10000000,
            "accounts_per_fee_scale": 1000,
            "account_fee_scale_bitshifts": 4,
            "max_authority_depth": 2,
            "echorand_config": {
                "_time_net_1mb": 3000,
                "_time_net_256b": 1500,
                "_creator_count": 2,
                "_verifier_count": 7,
                "_ok_threshold": 5,
                "_max_bba_steps": 12,
                "_gc1_delay": 0
            },
            "sidechain_config": {
                "eth_contract_address": "2d02eC421beAf8b13d2A65E3428ae528FBBD8813",
                "eth_committee_update_method": {
                    "method": "7ff203ab",
                    "gas": 1000000
                },
                "eth_gen_address_method": {
                    "method": "ffcc34fd",
                    "gas": 1000000
                },
                "eth_withdraw_method": {
                    "method": "e21bd1ce",
                    "gas": 1000000
                },
                "eth_update_addr_method": {
                    "method": "f1e3eb60",
                    "gas": 1000000
                },
                "eth_withdraw_token_method": {
                    "method": "e21bd1ce",
                    "gas": 1000000
                },
                "eth_collect_tokens_method": {
                    "method": "5940a240",
                    "gas": 1000000
                },
                "eth_committee_updated_topic": "514bf7702a7d2aca90dcf3d947158aad29563a17c1dbdc76d2eae84c22420142",
                "eth_gen_address_topic": "1855f12530a368418f19b2b15227f19225915b8113c7e17d4c276e2a10225039",
                "eth_deposit_topic": "77227a376c41a7533c952ebde8d7b44ee36c7a6cec0d3448f1a1e4231398356f",
                "eth_withdraw_topic": "481c4276b65cda86cfcd095776a5e290a13932f5bed47d4f786b0ffc4d0d76ae",
                "erc20_deposit_topic": "",
                "ETH_asset_id": "1.3.1",
                "fines": {
                    "generate_eth_address": -10
                },
                "waiting_blocks": 30
            },
            "erc20_config": {
                "contract_code": "60806040523480156...",
                "create_token_fee": 1000,
                "transfer_topic": "ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
                "check_balance_method": {
                    "method": "70a08231",
                    "gas": 1000000
                },
                "burn_method": {
                    "method": "42966c68",
                    "gas": 1000000
                },
                "issue_method": {
                    "method": "40c10f19",
                    "gas": 1000000
                }
            },
            "gas_price": {
                "price": 1,
                "gas_amount": 1000
            },
            "extensions": []
        },
        "next_available_vote_id": 9,
        "active_committee_members": [
            "1.5.4",
            "1.5.8",
            "1.5.0",
            "1.5.1",
            "1.5.2",
            "1.5.3",
            "1.5.5",
            "1.5.6",
            "1.5.7"
        ]
    }
}

get_config()

Retrieve compile-time constants.

Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_config",
        []
    ]
}
Returns
{
    "id": 4,
    "jsonrpc": "2.0",
    "result": {
        "ECHO_SYMBOL": "ECHO",
        "ECHO_ADDRESS_PREFIX": "ECHO",
        "ECHO_ED_PREFIX": "ECHO",
        "ECHO_MIN_ACCOUNT_NAME_LENGTH": 1,
        "ECHO_MAX_ACCOUNT_NAME_LENGTH": 63,
        "ECHO_MIN_ASSET_SYMBOL_LENGTH": 3,
        "ECHO_MAX_ASSET_SYMBOL_LENGTH": 16,
        "ECHO_MAX_SHARE_SUPPLY": "1000000000000000",
        "ECHO_MAX_PAY_RATE": 10000,
        "ECHO_MAX_SIG_CHECK_DEPTH": 2,
        "ECHO_MIN_TRANSACTION_SIZE_LIMIT": 1024,
        "ECHO_MIN_BLOCK_INTERVAL": 1,
        "ECHO_MAX_BLOCK_INTERVAL": 30,
        "ECHO_DEFAULT_BLOCK_INTERVAL": 5,
        "ECHO_DEFAULT_MAX_TRANSACTION_SIZE": 2097152,
        "ECHO_DEFAULT_MAX_BLOCK_SIZE": 5242880,
        "ECHO_DEFAULT_MAX_TIME_UNTIL_EXPIRATION": 86400,
        "ECHO_DEFAULT_MAINTENANCE_INTERVAL": 86400,
        "ECHO_DEFAULT_MAINTENANCE_DURATION_SECONDS": 10,
        "ECHO_MIN_UNDO_HISTORY": 10,
        "ECHO_MAX_UNDO_HISTORY": 10000,
        "ECHO_MIN_BLOCK_SIZE_LIMIT": 5120,
        "ECHO_MIN_TRANSACTION_EXPIRATION_LIMIT": 150,
        "ECHO_BLOCKCHAIN_PRECISION": 100000000,
        "ECHO_BLOCKCHAIN_PRECISION_DIGITS": 8,
        "ECHO_DEFAULT_TRANSFER_FEE": 100000000,
        "ECHO_MAX_INSTANCE_ID": "281474976710655",
        "ECHO_100_PERCENT": 10000,
        "ECHO_1_PERCENT": 100,
        "ECHO_MAX_MARKET_FEE_PERCENT": 10000,
        "ECHO_DEFAULT_FORCE_SETTLEMENT_DELAY": 86400,
        "ECHO_DEFAULT_FORCE_SETTLEMENT_OFFSET": 0,
        "ECHO_DEFAULT_FORCE_SETTLEMENT_MAX_VOLUME": 2000,
        "ECHO_DEFAULT_PRICE_FEED_LIFETIME": 86400,
        "ECHO_MAX_FEED_PRODUCERS": 200,
        "ECHO_DEFAULT_MAX_AUTHORITY_MEMBERSHIP": 10,
        "ECHO_DEFAULT_MAX_ASSET_WHITELIST_AUTHORITIES": 10,
        "ECHO_DEFAULT_MAX_ASSET_FEED_PUBLISHERS": 10,
        "ECHO_COLLATERAL_RATIO_DENOM": 1000,
        "ECHO_MIN_COLLATERAL_RATIO": 1001,
        "ECHO_MAX_COLLATERAL_RATIO": 32000,
        "ECHO_DEFAULT_MAINTENANCE_COLLATERAL_RATIO": 1750,
        "ECHO_DEFAULT_MAX_SHORT_SQUEEZE_RATIO": 1500,
        "ECHO_DEFAULT_MARGIN_PERIOD_SEC": 2592000,
        "ECHO_DEFAULT_MAX_COMMITTEE": 1001,
        "ECHO_DEFAULT_MAX_PROPOSAL_LIFETIME_SEC": 2419200,
        "ECHO_DEFAULT_COMMITTEE_PROPOSAL_REVIEW_PERIOD_SEC": 1209600,
        "ECHO_DEFAULT_NETWORK_PERCENT_OF_FEE": 2000,
        "ECHO_DEFAULT_LIFETIME_REFERRER_PERCENT_OF_FEE": 3000,
        "ECHO_DEFAULT_MAX_BULK_DISCOUNT_PERCENT": 5000,
        "ECHO_DEFAULT_BULK_DISCOUNT_THRESHOLD_MIN": "100000000000",
        "ECHO_DEFAULT_BULK_DISCOUNT_THRESHOLD_MAX": "10000000000000",
        "ECHO_DEFAULT_CASHBACK_VESTING_PERIOD_SEC": 31536000,
        "ECHO_DEFAULT_CASHBACK_VESTING_THRESHOLD": "10000000000",
        "ECHO_DEFAULT_BURN_PERCENT_OF_FEE": 2000,
        "ECHO_DEFAULT_MAX_ASSERT_OPCODE": 1,
        "ECHO_DEFAULT_FEE_LIQUIDATION_THRESHOLD": "10000000000",
        "ECHO_DEFAULT_ACCOUNTS_PER_FEE_SCALE": 1000,
        "ECHO_DEFAULT_ACCOUNT_FEE_SCALE_BITSHIFTS": 4,
        "ECHO_MAX_URL_LENGTH": 127,
        "ECHO_NEAR_SCHEDULE_CTR_IV": "7640891576956012808",
        "ECHO_FAR_SCHEDULE_CTR_IV": "13503953896175478587",
        "ECHO_CORE_ASSET_CYCLE_RATE": 17,
        "ECHO_CORE_ASSET_CYCLE_RATE_BITS": 32,
        "ECHO_DEFAULT_COMMITEE_PAY_VESTING_SECONDS": 86400,
        "ECHO_MAX_INTEREST_APR": 10000,
        "ECHO_COMMITTEE_ACCOUNT": "1.2.0",
        "ECHO_RELAXED_COMMITTEE_ACCOUNT": "1.2.2",
        "ECHO_NULL_ACCOUNT": "1.2.3",
        "ECHO_TEMP_ACCOUNT": "1.2.4"
    }
}

get_chain_id()

Get the chain ID.

Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_chain_id",
        []
    ]
}
Returns
{
    "id": 4,
    "jsonrpc": "2.0",
    "result": "31cde47f6b94908c2b2ed67c3365c7f58bb744dac145ecf6dc0941e1167c34ab"
}

get_dynamic_global_properties()

Retrieve the current dynamic global property object.

Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_dynamic_global_properties",
        []
    ]
}
Returns
{
    "id": 4,
    "jsonrpc": "2.0",
    "result": {
        "id": "2.1.0",
        "head_block_number": 250396,
        "head_block_id": "0003d21cb1f7eb2f08e817f184c26748870f7e99",
        "time": "2019-07-04T09:47:50",
        "next_maintenance_time": "2019-07-05T00:00:00",
        "last_budget_time": "2019-07-04T00:00:02",
        "committee_budget": 1,
        "accounts_registered_this_interval": 24,
        "recently_missed_count": 396504222,
        "current_aslot": "31237959594",
        "recent_slots_filled": "120766797792735655195624277327849675482",
        "dynamic_flags": 0,
        "last_irreversible_block_num": 250381,
        "extensions": []
    }
}

Keys

get_key_references(keys)

Retreive an array of account IDs associated with the given keys.

Parameters
Option Description
vector<eddsa::public_key_t> keys an array of public keys
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_key_references",
        [
            "ECHOEdjiBUy2RBJ9sMN7jKMK4x9Fa4QVR7JgtNLwbgcZtcZB",
            "ECHO4oFbfkABpd6jenamJyjMwx3Sj98UUusYGSX9K8hDW8oK", ...
        ]
    ]
}
Returns

An array of arrays of account IDs for every public key provided.

{
    "id": 4,
    "jsonrpc": "2.0",
    "result": [
        [],
        []
    ]
}

is_public_key_registered(public_key)

Determine whether of a public key is currently linked to any registered (i.e. non-stealth) account on the blockchain.

Parameters
Option Description
eddsa::public_key_t key public key
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "is_public_key_registered",
        [
            "ECHOEdjiBUy2RBJ9sMN7jKMK4x9Fa4QVR7JgtNLwbgcZtcZB"
        ]
    ]
}
Returns

Whether a public key is known.

{
    "id": 4,
    "jsonrpc": "2.0",
    "result": false
}

Accounts

get_accounts(account_ids)

Get a list of accounts by ID. This function has semantics identical to get_objects.

Parameters
Option Description
const vector<account_id_type>& accounts_ids IDs of the accounts to retrieve
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_accounts",
        [
            "1.2.10",
            "1.2.11", ...
        ]
    ]
}
Returns

The accounts corresponding to the provided IDs.

{
    "id": 4,
    "jsonrpc": "2.0",
    "result": [
        {
            "id": "1.2.10",
            "membership_expiration_date": "2106-02-07T06:28:15",
            "registrar": "1.2.10",
            "referrer": "1.2.10",
            "lifetime_referrer": "1.2.10",
            "network_fee_percentage": 2000,
            "lifetime_referrer_fee_percentage": 8000,
            "referrer_rewards_percentage": 0,
            "name": "init4",
            "active": {
                "weight_threshold": 1,
                "account_auths": [],
                "key_auths": [
                    [
                        "ECHO6EwDsYFoZ3bc4GSuS4dzFRSAJhEWgsCFB8aUBdLXvhdt",
                        1
                    ]
                ]
            },
            "echorand_key": "ECHO6EwDsYFoZ3bc4GSuS4dzFRSAJhEWgsCFB8aUBdLXvhdt",
            "options": {
                "voting_account": "1.2.5",
                "delegating_account": "1.2.5",
                "num_committee": 0,
                "votes": [],
                "extensions": []
            },
            "statistics": "2.6.10",
            "whitelisting_accounts": [],
            "blacklisting_accounts": [],
            "whitelisted_accounts": [],
            "blacklisted_accounts": [],
            "active_special_authority": [
                0,
                {}
            ],
            "top_n_control_flags": 0,
            "extensions": []
        },
        {
            "id": "1.2.11",
            "membership_expiration_date": "2106-02-07T06:28:15",
            "registrar": "1.2.11",
            "referrer": "1.2.11",
            "lifetime_referrer": "1.2.11",
            "network_fee_percentage": 2000,
            "lifetime_referrer_fee_percentage": 8000,
            "referrer_rewards_percentage": 0,
            "name": "init5",
            "active": {
                "weight_threshold": 1,
                "account_auths": [],
                "key_auths": [
                    [
                        "ECHOnSpfhDpbKkLhdt9Ve74uF1CY5U3PVBDvEXBuQYRJdKQ",
                        1
                    ]
                ]
            },
            "echorand_key": "ECHOnSpfhDpbKkLhdt9Ve74uF1CY5U3PVBDvEXBuQYRJdKQ",
            "options": {
                "voting_account": "1.2.5",
                "delegating_account": "1.2.5",
                "num_committee": 0,
                "votes": [],
                "extensions": []
            },
            "statistics": "2.6.11",
            "whitelisting_accounts": [],
            "blacklisting_accounts": [],
            "whitelisted_accounts": [],
            "blacklisted_accounts": [],
            "cashback_vb": "1.12.1",
            "active_special_authority": [
                0,
                {}
            ],
            "top_n_control_flags": 0,
            "extensions": []
        }
    ]
}

get_full_accounts(names_or_ids, subscribe)

Fetch all objects relevant to the specified accounts and subscribe to updates.

This function fetches all relevant objects for the given accounts, and subscribes to updates to the given accounts. If any of the strings in names_or_ids cannot be tied to an account, that input will be ignored. All other accounts will be retrieved and subscribed.

Parameters
Option Description
const vector<string>& names_or_ids an array of either the names or IDs of accounts to retrieve (can be mixed)
bool subscribe Whethere to subscribe to updates
Example
{
    "id": 4,
    "method": "call",
    "params": [
        DATABASE_API_ID,
        "get_full_accounts",
        [
            [
                "1.2.10",
                "1.2.11"
            ],
            "false"
        ]
    ]
}
Returns

A map of strings from names_or_ids to the corresponding accounts.

{
    "id": 4,
    "jsonrpc": "2.0",
    "result": [
        [
            "1.2.10",
            {
                "account": {
                    "id": "1.2.10",
                    "membership_expiration_date": "2106-02-07T06:28:15",
                    "registrar": "1.2.10",
                    "referrer": "1.2.10",
                    "lifetime_referrer": "1.2.10",
                    "network_fee_percentage": 2000,
                    "lifetime_referrer_fee_percentage": 8000,
                    "referrer_rewards_percentage": 0,
                    "name": "init4",
                    "active": {
                        "weight_threshold": 1,
                        "account_auths": [],
                        "key_auths": [
                            [
                                "ECHO6EwDsYFoZ3bc4GSuS4dzFRSAJhEWgsCFB8aUBdLXvhdt",
                                1
                            ]
                        ]
                    },
                    "echorand_key": "ECHO6EwDsYFoZ3bc4GSuS4dzFRSAJhEWgsCFB8aUBdLXvhdt",
                    "options": {
                        "voting_account": "1.2.5",
                        "delegating_account": "1.2.5",
                        "num_committee": 0,
                        "votes": [],
                        "extensions": []
                    },
                    "statistics": "2.6.10",
                    "whitelisting_accounts": [],
                    "blacklisting_accounts": [],
                    "whitelisted_accounts": [],
                    "blacklisted_accounts": [],
                    "active_special_authority": [
                        0,
                        {}
                    ],
                    "top_n_control_flags": 0,
                    "extensions": []
                },
                "statistics": {
                    "id": "2.6.10",
                    "owner": "1.2.10",
                    "most_recent_op": "2.9.2392",
                    "total_ops": 75,
                    "removed_ops": 0,
                    "total_blocks": 1577,
                    "total_core_in_orders": 0,
                    "lifetime_fees_paid": 0,
                    "pending_fees": 0,
                    "pending_vested_fees": 0,
                    "generated_eth_address": false,
                    "committeeman_rating": 0,
                    "extensions": []
                },
                "registrar_name": "init4",
                "referrer_name": "init4",
                "lifetime_referrer_name": "init4",
                "votes": [],
                "balances": [
                    {
                        "id": "2.5.3",
                        "owner": "1.2.10",
                        "asset_type": "1.3.0",
                        "balance": "1000000000000",
                        "extensions": []
                    }
                ],
                "vesting_balances": [
                    {
                        "id": "1.12.9",
                        "owner": "1.2.10",
                        "balance": {
                            "amount": "4827956465",
                            "asset_id": "1.3.0"
                        },
                        "policy": [
                            1,
                            {
                                "vesting_seconds": 86400,
                                "start_claim": "1970-01-01T00:00:00",
                                "coin_seconds_earned": "416365444195200",
                                "coin_seconds_earned_last_update": "2019-07-04T00:00:15"
                            }
                        ],
                        "extensions": []
                    }
                ],
                "limit_orders": [],
                "call_orders": [],
                "settle_orders": [],
                "proposals": [],
                "assets": [],
                "withdraws": []
            }
        ],
        [
            "1.2.11",
            {
                "account": {
                    "id": "1.2.11",
                    "membership_expiration_date": "2106-02-07T06:28:15",
                    "registrar": "1.2.11",
                    "referrer": "1.2.11",
                    "lifetime_referrer": "1.2.11",
                    "network_fee_percentage": 2000,
                    "lifetime_referrer_fee_percentage": 8000,
                    "referrer_rewards_percentage": 0,
                    "name": "init5",
                    "active": {
                        "weight_threshold": 1,
                        "account_auths": [],
                        "key_auths": [
                            [
                                "ECHOnSpfhDpbKkLhdt9Ve74uF1CY5U3PVBDvEXBuQYRJdKQ",
                                1
                            ]
                        ]
                    },
                    "echorand_key": "ECHOnSpfhDpbKkLhdt9Ve74uF1CY5U3PVBDvEXBuQYRJdKQ",
                    "options": {
                        "voting_account": "1.2.5",
                        "delegating_account": "1.2.5",
                        "num_committee": 0,
                        "votes": [],
                        "extensions": []
                    },
                    "statistics": "2.6.11",
                    "whitelisting_accounts": [],
                    "blacklisting_accounts": [],
                    "whitelisted_accounts": [],
                    "blacklisted_accounts": [],
                    "cashback_vb": "1.12.1",
                    "active_special_authority": [
                        0,
                        {}
                    ],
                    "top_n_control_flags": 0,
                    "extensions": []
                },
                "statistics": {
                    "id": "2.6.11",
                    "owner": "1.2.11",
                    "most_recent_op": "2.9.2421",
                    "total_ops": 119,
                    "removed_ops": 0,
                    "total_blocks": 13589,
                    "total_core_in_orders": 0,
                    "lifetime_fees_paid": 3411895877,
                    "pending_fees": 400019237,
                    "pending_vested_fees": 1019823,
                    "generated_eth_address": false,
                    "committeeman_rating": -10,
                    "extensions": []
                },
                "registrar_name": "init5",
                "referrer_name": "init5",
                "lifetime_referrer_name": "init5",
                "votes": [],
                "cashback_balance": {
                    "id": "1.12.1",
                    "owner": "1.2.11",
                    "balance": {
                        "amount": "35371134893",
                        "asset_id": "1.3.0"
                    },
                    "policy": [
                        1,
                        {
                            "vesting_seconds": 31536000,
                            "start_claim": "1970-01-01T00:00:00",
                            "coin_seconds_earned": "7430475834952995",
                            "coin_seconds_earned_last_update": "2019-07-04T00:00:02"
                        }
                    ],
                    "extensions": []
                },
                "balances": [
                    {
                        "id": "2.5.4",
                        "owner": "1.2.11",
                        "asset_type": "1.3.0",
                        "balance": "9996187065063",
                        "extensions": []
                    }
                ],
                "vesting_balances": [
                    {
                        "id": "1.12.1",
                        "owner": "1.2.11",
                        "balance": {
                            "amount": "35371134893",
                            "asset_id": "1.3.0"
                        },
                        "policy": [
                            1,
                            {
                                "vesting_seconds": 31536000,
                                "start_claim": "1970-01-01T00:00:00",
                                "coin_seconds_earned": "7430475834952995",
                                "coin_seconds_earned_last_update": "2019-07-04T00:00:02"
                            }
                        ],
                        "extensions": []
                    },
                    {
                        "id": "1.12.10",
                        "owner": "1.2.11",
                        "balance": {
                            "amount": "4827956465",
                            "asset_id": "1.3.0"
                        },
                        "policy": [
                            1,
                            {
                                "vesting_seconds": 86400,
                                "start_claim": "1970-01-01T00:00:00",
                                "coin_seconds_earned": "416365444195200",
                                "coin_seconds_earned_last_update": "2019-07-04T00:00:15"
                            }
                        ],
                        "extensions": []
                    }
                ],
                "limit_orders": [],
                "call_orders": [],
                "settle_orders": [],
                "proposals": [],
                "assets": [],
                "withdraws": []
            }
        ]
    ]
}

get_account_by_name(name)

Get the account object by it's name.

Parameters
Option Description
string name account name
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_account_by_name",
        [
            "nathan"
        ]
    ]
}
Returns

Account object it the account exists, null otherwise.

{
    "id": 4,
    "jsonrpc": "2.0",
    "result": {
        "id": "1.2.15",
        "membership_expiration_date": "2106-02-07T06:28:15",
        "registrar": "1.2.15",
        "referrer": "1.2.15",
        "lifetime_referrer": "1.2.15",
        "network_fee_percentage": 2000,
        "lifetime_referrer_fee_percentage": 8000,
        "referrer_rewards_percentage": 0,
        "name": "nathan",
        "active": {
            "weight_threshold": 1,
            "account_auths": [],
            "key_auths": [
                [
                    "ECHO3BhH6nPrPmh6wAtsNphRTcreo2uzZLxSP8JyNJoiRD6Q",
                    1
                ]
            ]
        },
        "echorand_key": "ECHO3BhH6nPrPmh6wAtsNphRTcreo2uzZLxSP8JyNJoiRD6Q",
        "options": {
            "voting_account": "1.2.5",
            "delegating_account": "1.2.5",
            "num_committee": 0,
            "votes": [],
            "extensions": []
        },
        "statistics": "2.6.15",
        "whitelisting_accounts": [],
        "blacklisting_accounts": [],
        "whitelisted_accounts": [],
        "blacklisted_accounts": [],
        "cashback_vb": "1.12.3",
        "active_special_authority": [
            0,
            {}
        ],
        "top_n_control_flags": 0,
        "extensions": []
    }
}

get_account_references(account_id)

Parameters
Option Description
account_id_type account_id id of the account
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_account_references",
        [
            "1.2.10"
        ]
    ]
}
Returns

All accounts that refer to the key or account id in their active authorities.

{
    "id": 4,
    "jsonrpc": "2.0",
    "result": [
        "1.2.0",
        "1.2.2"
    ]
}

lookup_account_names(account_names)

Get a list of accounts by name. This function has semantics identical to get_objects.

Parameters
Option Description
const vector<string>& account_names names of the accounts to retrieve
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "lookup_account_names",
        [
            "init1",
            "init2", ...
        ]
    ]
}
Returns

The accounts holding the provided names.

{
    "id": 4,
    "jsonrpc": "2.0",
    "result": [
        {
            "id": "1.2.7",
            "membership_expiration_date": "2106-02-07T06:28:15",
            "registrar": "1.2.7",
            "referrer": "1.2.7",
            "lifetime_referrer": "1.2.7",
            "network_fee_percentage": 2000,
            "lifetime_referrer_fee_percentage": 8000,
            "referrer_rewards_percentage": 0,
            "name": "init1",
            "active": {
                "weight_threshold": 1,
                "account_auths": [],
                "key_auths": [
                    [
                        "ECHO9zaxMcSs3roFS2KhfwBgL3TdUNDHEoQMRQMgRndC7Q4B",
                        1
                    ]
                ]
            },
            "echorand_key": "ECHO9zaxMcSs3roFS2KhfwBgL3TdUNDHEoQMRQMgRndC7Q4B",
            "options": {
                "voting_account": "1.2.5",
                "delegating_account": "1.2.5",
                "num_committee": 0,
                "votes": [],
                "extensions": []
            },
            "statistics": "2.6.7",
            "whitelisting_accounts": [],
            "blacklisting_accounts": [],
            "whitelisted_accounts": [],
            "blacklisted_accounts": [],
            "active_special_authority": [
                0,
                {}
            ],
            "top_n_control_flags": 0,
            "extensions": []
        },
        {
            "id": "1.2.8",
            "membership_expiration_date": "2106-02-07T06:28:15",
            "registrar": "1.2.8",
            "referrer": "1.2.8",
            "lifetime_referrer": "1.2.8",
            "network_fee_percentage": 2000,
            "lifetime_referrer_fee_percentage": 8000,
            "referrer_rewards_percentage": 0,
            "name": "init2",
            "active": {
                "weight_threshold": 1,
                "account_auths": [],
                "key_auths": [
                    [
                        "ECHOBt9reqYX9yccLmCw2tPwg3C5S5NucoxxhHRkq1ScmLSQ",
                        1
                    ]
                ]
            },
            "echorand_key": "ECHOBt9reqYX9yccLmCw2tPwg3C5S5NucoxxhHRkq1ScmLSQ",
            "options": {
                "voting_account": "1.2.5",
                "delegating_account": "1.2.5",
                "num_committee": 0,
                "votes": [],
                "extensions": []
            },
            "statistics": "2.6.8",
            "whitelisting_accounts": [],
            "blacklisting_accounts": [],
            "whitelisted_accounts": [],
            "blacklisted_accounts": [],
            "cashback_vb": "1.12.2",
            "active_special_authority": [
                0,
                {}
            ],
            "top_n_control_flags": 0,
            "extensions": []
        }
    ]
}

lookup_accounts(lower_bound_name, limit)

Get names and IDs for registered accounts.

Parameters
Option Description
const string& lower_bound_name lower bound of the first name to return
uint32_t limit maximum number of results to return must not exceed 1000
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "lookup_accounts",
        [
            "init1",
            "3"
        ]
    ]
}
Returns

Map of account names to corresponding IDs.

{
    "id": 4,
    "jsonrpc": "2.0",
    "result": [
        [
            "init1",
            "1.2.7"
        ],
        [
            "init2",
            "1.2.8"
        ],
        [
            "init3",
            "1.2.9"
        ]
    ]
}

get_account_addresses(account_id, from, limit)

Get addresses of specified account.

Parameters
Option Description
const account_id_type account_id ID of the account
const uint64_t from number of block to start retrieve from
const unsigned limit maximum number of addresses to return
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_account_addresses",
        [
            "1.2.10",
            "3",
            "6"
        ]
    ]
}
Returns

Addresses owned by account in specified ids interval.

{
    "id": 4,
    "jsonrpc": "2.0",
    "result": [
        {
            "id": "2.18.0",
            "owner": "1.2.15",
            "label": "test",
            "address": "8815c69de5d32d3061e52ca9386446332225b43d",
            "extensions": []
        }
    ]
}

get_account_by_address(address)

Get owner of specified address.

Parameters
Option Description
const fc::ripemd160 address address in form of ripemd160 hash
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_account_by_address",
        [
            "8815c69de5d32d3061e52ca9386446332225b43d"
        ]
    ]
}
Returns

Account id of owner.

{
    "id": 4,
    "jsonrpc": "2.0",
    "result": "1.2.15"
}

Contracts

get_contract(contract_id)

Get a contract info from VM by ID.

Parameters
Option Description
contract_id_type contract_id ID of the contract to retrieve
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_contract",
        [
            "1.14.0"
        ]
    ]
}
Returns

The contracts data from VM corresponding to the provided ID.

{
    "id": 4,
    "jsonrpc": "2.0",
    "result": [
        0,
        {
            "code": "6080604052600436106100d557...",
            "storage": [
                [
                    "036b6384b5eca791c62761152d0c79bb0604c104a5fb6f4eb0703f3154bb3db0",
                    [
                        "05",
                        "d3c21bcecceda1000000"
                    ]
                ], ...
            ]
        }
    ]
}

get_contracts(contract_ids)

Get a list of contracts by ID.

##### Parameters

Option Description
const vector<contract_id_type>& contract_ids IDs of the contracts to retrieve
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_contracts",
        [
            "1.14.0",
            "1.14.1", ...
        ]
    ]
}
Returns

The contracts corresponding to the provided IDs.

{
    "id": 4,
    "jsonrpc": "2.0",
    "result": [
        {
            "id": "1.14.0",
            "type": "evm",
            "destroyed": false,
            "statistics": "2.17.0",
            "owner": "1.2.27",
            "extensions": []
        },
        {
            "id": "1.14.1",
            "type": "evm",
            "destroyed": false,
            "statistics": "2.17.1",
            "supported_asset_id": "1.3.0",
            "owner": "1.2.38",
            "extensions": []
        }
    ]
}

get_contract_logs(contract_id, from, to)

Get logs of specified contract.

Parameters
Option Description
const contract_id_type contract_id ID of the contract
const uint32_t from number of block to start retrieve from
const uint32_t to number of block to end to retrieve
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_contract_logs",
        [
            "1.14.0",
            "0",
            "3"
        ]
    ]
}
Returns

The contracts logs from specified blocks interval.

subscribe_contracts(contracts_ids)

Request notification about contracts.

Parameters
Option Description
const vector<contract_id_type>& contracts_ids IDs of the contracts to subscribe

subscribe_contract_logs(callback, contract_id, from, to)

Subscribe to contract's logs.

If you want to always receive alerts, then you can specify a very large number as the end of the range of the blocks you listen to, for example, 999999999.

When calling this method, it will return all already existing events in the specified range as well as the get_contract_logs method.

Parameters
Option Description
function<void(const variant&)> cb callback method which is called when contracts has new logs
const contract_id_type contract_id ID of the contract
const uint32_t from number of block to start retrieve from
const uint32_t to number of block to end to retrieve
Returns

The contracts logs from specified blocks interval.

Notice example
{
    "method": "notice",
    "params": [ 
        SUBSCRIPTION_ID,
        [
            [
                {
                    "address": "0100000000000000000000000000000000000000",
                    "log": [
                        "a887d9f447f44f095186fc4a0bef9914881f330f24d2a2f63242c4c05eb26ee0"
                    ],
                    "data": "000000000000000000000000000000000000000000000000000000000000001a"
                }
            ]
        ]
    ],
}

get_contract_result(id)

Get contract result from VM for specified result_id

Parameters
Option Description
const contract_result_id_type& id ID of result to retrieve
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_contract_result",
        [
            "1.15.0"
        ]
    ]
}
Returns

Result of execution.

{
    "id": 4,
    "jsonrpc": "2.0",
    "result": [
        0,
        {
            "exec_res": {
                "excepted": "None",
                "new_address": "0100000000000000000000000000000000000000",
                "output": "6080604052600436106100d5576...",
                "code_deposit": "Success",
                "gas_refunded": 0,
                "gas_for_deposit": 1207462,
                "deposit_size": 5534
            },
            "tr_receipt": {
                "status_code": 1,
                "gas_used": 1692338,
                "bloom": "0000000000000000000000000000000000000000001000000002000...",
                "log": [
                    {
                        "address": "0100000000000000000000000000000000000000",
                        "log": [
                            "ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
                            "0000000000000000000000000000000000000000000000000000000000000000",
                            "000000000000000000000000000000000000000000000000000000000000001b"
                        ],
                        "data": "00000000000000000000000000000000000000000000d3c21bcecceda1000000"
                    }
                ]
            }
        }
    ]
}

call_contract_no_changing_state(contract_id, registrar_account, asset_type, code)

Call the provided contract, but don't change the state.

Parameters
Option Description
contract_id_type contract_id ID of the contract
account_id_type registrar_account name of the account calling the contract
asset_id_type asset_type the type of the asset transfered to the contract
string code the hash of the method to call(or name for x86-x64 contracts)
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "call_contract_no_changing_state",
        [
            "1.14.0",
            "1.2.26",
            "1.3.0",
            "cfae3217"
        ]
    ]
}
Returns

Result of execution.

Balances

get_account_balances(id, assets)

Get an account’s balances in various assets.

Parameters
Option Description
account_id_type id ID of the account to get balances for
const flat_set<asset_id_type>& assets an array of IDs of the assets to get balances of; if empty, get all assets account has a balance in
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_account_balances",
        [
            "1.2.15",
            "1.3.0", ...
        ]
    ]
}
Returns

An array of balances of the account.

{
    "id": 4,
    "jsonrpc": "2.0",
    "result": [
        {
            "amount": "799959899999120",
            "asset_id": "1.3.0"
        }
    ]
}

get_contract_balances (contract_id)

Get an contract's balances in various assets.

Parameters
Option Description
contract_id_type contract_id ID of the contract to get balances for
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_contract_balances",
        [
            "1.14.0"
        ]
    ]
}
Returns

An array of balances of the contract.

get_named_account_balances(name, assets)

Semantically equivalent to get_account_balances, but takes a name instead of an ID.

get_balance_objects(keys)

Returns all unclaimed balance objects for a set of addresses.

Parameters
Option Description
const vector<eddsa::public_key_t>& keys an array of public keys
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_balance_objects",
        [
            "ECHOEdjiBUy2RBJ9sMN7jKMK4x9Fa4QVR7JgtNLwbgcZtcZB",
            "ECHOB7X3uEz2mJXTBbbBzUw8f8neV3RFEje8o1isr3cuqF7Y", ...
        ]
    ]
}
Returns

An array of balances objects.

get_vested_balances(objs)

Parameters
Option Description
const vector<balance_id_type>& objs an array of public keys
Returns

An array of assets vested.

get_vesting_balances(account_id)

Parameters
Option Description
account_id_type account_ids the id of account to use
Returns

An array of vesting balances.

get_account_count()

Get the total number of accounts registered with the blockchain.

Assets

get_assets(asset_ids)

Get a list of assets by ID. This function has semantics identical to get_objects.

Parameters
Option Description
const vector<asset_id_type>& asset_ids IDs of the assets to retrieve
Returns

The assets corresponding to the provided IDs.

list_assets(lower_bound_symbol, limit)

Get assets alphabetically by symbol name.

Parameters
Option Description
const string& lower_bound_symbol lower bound of symbol names to retrieve
uint32_t limit maximum number of assets to fetch (must not exceed 100)
Returns

The assets found.

lookup_asset_symbols(symbols_or_ids)

Get a list of assets by symbol. This function has semantics identical to get_objects.

Parameters
Option Description
const vector<string>& symbols_or_ids symbols or stringified IDs of the assets to retrieve
Return

The assets corresponding to the provided symbols or IDs.

Verifiers

get_current_verifiers(stage_num)

Get a list of accounts selected to be verifiers on current round on stage provided.

Parameters
Option Description
const uint32_t stage_num stage number
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_current_verifiers",
        [
            "5"
        ]
    ]
}
Returns

List of accounts selected to be verifiers on given stage.

{
    "id": 4,
    "jsonrpc": "2.0",
    "result": [
        "1.2.11",
        "1.2.14",
        "1.2.15",
        "1.2.18",
        "1.2.32",
        "1.2.66",
        "1.2.73"
    ]
}

Committee members

get_committee_members(committee_member_ids)

Get a list of committee_members by ID. This function has semantics identical to get_objects.

Parameters
Option Description
const vector<committee_member_id_type>& committee_member_ids IDs of the committee_members to retrieve
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_committee_members",
        [
            "1.5.0",
            "1.5.1", ...
        ]
    ]
}
Returns

The committee_members corresponding to the provided IDs.

{
    "id": 4,
    "jsonrpc": "2.0",
    "result": [
        {
            "id": "1.5.0",
            "committee_member_account": "1.2.6",
            "pay_vb": "1.12.5",
            "vote_id": "0:0",
            "total_votes": "4897997616",
            "url": "",
            "eth_address": "9BDC67627acA07aD0DAB8C6678765862b7d5F5C0",
            "extensions": []
        },
        {
            "id": "1.5.1",
            "committee_member_account": "1.2.7",
            "pay_vb": "1.12.6",
            "vote_id": "0:1",
            "total_votes": 0,
            "url": "",
            "eth_address": "2B1f2bDdEf68914106F72e7Ee9A43D95F180A397",
            "extensions": []
        }
    ]
}

get_committee_member_by_account(account)

Get the committee_member owned by a given account.

Parameters
Option Description
account_id_type account the ID of the account whose committee_member should be retrieved
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_committee_member_by_account",
        [
            "1.2.26"
        ]
    ]
}
Returns

The committee_member object, or null if the account does not have a committee_member.

lookup_committee_member_accounts(lower_bound_name, limit)

Get names and IDs for registered committee_members.

Parameters
Option Description
const string& lower_bound_name lower bound of the first name to return
uint32_t limit maximum number of results to return -- must not exceed 1000
Returns

Map of committee_member names to corresponding IDs.

get_committee_count()

Get the total number of committee registered with the blockchain

Votes

lookup_vote_ids(votes)

Given a set of votes, return the objects they are voting for.

This will be a mixture of committee_member_object, witness_objects, and worker_objects

The results will be in the same order as the votes. null will be returned for any vote ids that are not found.

Parameters
Option Description
const vector<vote_id_type>& votes an array votes

Authority / validation

get_transaction_hex(trx)

Get a hexdump of the serialized binary form of a signed transaction.

get_required_signatures(ctrx, available_keys)

Takes a partially signed transaction and a set of public keys that the owner has the ability to sign for and return the minimal subset of public keys that should add signatures to the transaction.

get_potential_signatures(ctrx)

This method will return the set of all public keys that could possibly sign for a given transaction. This call can be used by wallets to filter their set of public keys to just the relevant subset prior to calling get_required_signatures to get the minimum subset.

verify_authority(trx)

Returns true of the trx has all of the required signatures, otherwise throws an exception.

verify_account_authority(name_or_id, signers)

Returns true if the signers have enough authority to authorize an account.

validate_transaction(trx)

Validates a transaction against the current state without broadcasting it on the network.

get_required_fees(ops, id)

For each operation calculate the required fee in the specified asset type. If the asset type does not have a valid core_exchange_rate.

Proposed transactions

get_proposed_transactions(id)

Returns the set of proposed transactions relevant to the specified account id.

Parameters
Option Description
account_id_type id the ID of the account
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_proposed_transactions",
        [
            "1.2.26"
        ]
    ]
}

Sidechain

get_eth_address(account)

Returns information about generated ethereum address, if then exist and approved, for the given account id.

Parameters
Option Description
const account_id_type& account the id of the account to provide information about
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_eth_address",
        [
            "1.2.21"
        ]
    ]
}
Returns

The public ethereum address data stored in the blockchain

{
    "id": 4,
    "jsonrpc": "2.0",
    "result": {
        "id": "1.17.4",
        "account": "1.2.21",
        "eth_addr": "1134464B537884EE89cb298eEd674C9B14BCce47",
        "is_approved": true,
        "approves": [],
        "extensions": []
    }
}

get_account_deposits(account)

Returns all approved deposits, for the given account id.

Parameters
Option Description
const account_id_type& account the id of the account to provide information about
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_account_deposits",
        [
            "1.2.21"
        ]
    ]
}
Returns

The all public deposits data stored in the blockchain.

{
    "id": 4,
    "jsonrpc": "2.0",
    "result": [
        {
            "id": "1.18.5",
            "deposit_id": 6,
            "account": "1.2.21",
            "value": 99448,
            "is_approved": true,
            "approves": [],
            "extensions": []
        }
    ]
}

get_account_withdrawals(account)

Returns all approved withdrawals, for the given account id.

Parameters
Option Description
const account_id_type& account the id of the account to provide information about
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_account_withdrawals",
        [
            "1.2.21"
        ]
    ]
}
Returns

The all public withdrawals data stored in the blockchain.

{
    "id": 4,
    "jsonrpc": "2.0",
    "result": [
        {
            "id": "1.19.15",
            "withdraw_id": 15,
            "account": "1.2.21",
            "eth_addr": "46Ba2677a1c982B329A81f60Cf90fBA2E8CA9fA8",
            "value": 1000,
            "is_approved": true,
            "approves": [],
            "extensions": []
        }
    ]
}

Sidechain ERC20

get_erc20_token(eth_addr)

Returns information about erc20 token, if then exist.

Parameters
Option Description
const eth_address_type& eth_addr the ethereum address of token in Ethereum network
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_erc20_token",
        [
            "0102fe7702b96808f7bbc0d4a888ed1468216cfd"
        ]
    ]
}
Returns

The public erc20 token data stored in the blockchain.

get_erc20_account_deposits(account)

Returns all approved deposits, for the given account id.

Parameters
Option Description
const account_id_type& account the id of the account to provide information about
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_erc20_account_deposits",
        [
            "1.2.26"
        ]
    ]
}
Returns

The all public erc20 deposits data stored in the blockchain.

get_erc20_account_withdrawals(account)

Returns all approved withdrawals, for the given account id.

Parameters
Option Description
const account_id_type& account the id of the account to provide information about
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_erc20_account_withdrawals",
        [
            "1.2.26"
        ]
    ]
}
Returns

The all public erc20 withdrawals data stored in the blockchain.

Contract Feepool

get_contract_pool_balance(id)

Get an contract's pool balance in default asset.

Parameters
Option Description
contract_id_type id ID of the contract to get balances for
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_contract_pool_balance",
        [
            "1.14.0"
        ]
    ]
}
Returns

Balances of the contract.

get_contract_pool_whitelist(id)

Get an contract's whitelist and blacklist.

Parameters
Option Description
contract_id_type id ID of the contract to get balances for
Example
{
    "id": 4,
    "method": "call",
    "params": [DATABASE_API_ID,
        "get_contract_pool_whitelist",
        [
            "1.14.0"
        ]
    ]
}
Returns

Struct contract_pool_whitelist which consist of whitelist blacklist.