Introduction

GDAC aims to bring about innovation in Finance using Blockchain Technology.

In order to create synergy with our partners, we offer partners exclusive API access that gives programmatic control over:

Authentication
Market Data
Account
Order
Trade

Revision History

Version	Date (dd/mm/yyyy)	Changes
0.1	02/02/2019	Initial Commit
0.2	13/02/2019	Update authentication method with api key, secret key
0.3	28/02/2019	Update API docs - Market Data, Account, Order, Trade
0.4	05/03/2019	Order Price Unit: it depends on the order price rather than current price List Open Orders: added Status parameter Ticker: removed Ask, Bid from response Cancel Order: remove pair from request parameter API endpoint: Version prefix of all API endpoints changed to v0.4

General

Rate Limit

In order to provide a stable API service, requests that exceed the rate limit within a short period of time are not allowed. Partner API users can make up to 4 requests per second.

When a rate limit is exceeded, a status of 429 Too Many Requests will be returned.

Datetime Format

All timestamps are returned in ISO 8601 format(UTC). Example: "2019-02-26T14:57:04Z"

Endpoint URL

Environment	Base URL
production	https://partner.gdac.com

Request URL needs to be determined by Base and specific endpoint combination.

Error

{
  "code": "ERROR CODE"
}

Any endpoint can return an ERROR

Order Price Unit

The order price should be a multiple of the order price unit. The order price unit depends on the price at which you want to order.

<= Order Price	Order Price <	Order Price Unit
0	0.00001	0.00000001
0.00001	0.00005	0.00000005
0.00005	0.0001	0.0000001
0.0001	0.0005	0.0000005
0.0005	0.001	0.000001
0.001	0.005	0.000005
0.005	0.01	0.00001
0.01	0.05	0.00005
0.05	0.1	0.0001
0.1	0.5	0.0005
0.5	10	0.001
10	100	0.01
100	1000	0.1
1000	5000	1
5000	10000	5
10000	100000	10
100000	500000	50
500000	1000000	100
1000000	2000000	500
2000000		1000

Authentication

All API calls require an authentication token in the header.

Creating an authentication token

The authentication token follows JWT format and HS256 is recommended for signing.

JWT Payload Format

{
  "api_key": "api:ak:{API Key}",
  "nonce": "current timestamp in ISO 8601 format"
}

Payload contains api key and nonce. api_key should begin with the prefix "api:ak:". nonce should not differ by more than 10 seconds from the current time on the server.

Creating a JWT Signature

const jwt = require("jsonwebtoken");

const payload = {
  api_key: "THIS_IS_API_KEY",
  nonce: "2019-02-13T08:10:13Z"
};

const jwtToken = jwt.sign(payload, "THIS_IS_SECRET_KEY");

Create a JWT Signature using the payload and secret key.

Creating a request with an authentication token

Authorization: Bearer "JWT Token"

When making a new request, you must insert a JWT Token into your Request Header.

`api_key` and `secret_key` Issuance method

We will provide an access_token to each partner company.

Please register at the GDAC Exchange and request token issuance.

HTTP GET Example in Python with API Key

#!/usr/bin/env python3.6
import datetime
import requests
import logging
import jwt


logging.basicConfig(level=logging.DEBUG)


if __name__ == '__main__':
    API_KEY = 'API_KEY'
    SECRET = 'SECRET'

    payload = {
        'api_key': "api:ak:" + API_KEY,
        'nonce': datetime.datetime.utcnow().strftime("%Y-%m-%dT%H:%M:%SZ")
    }

    jwtToken = jwt.encode(payload, SECRET, 'HS256')
    headers = {'Authorization': 'Bearer '+jwtToken.decode('utf-8')}
    r = requests.get("https://partner.gdac.com/v0.4/balance", headers=headers)

    print('Request')
    print(r.request.headers)
    print('Response')
    print(r.status_code)
    print(r.headers)
    print(r.content)

Market Data

Pairs

Request URI

curl https://partner.gdac.com/v0.4/public/pairs

Response Body

[
  {
    "pair": "BTC/KRW",
    "base_currency": "KRW",
    "quote_currency": "BTC",
    "quote_order_unit": "0.00010000",
    "fee_rate_taker": "0.001",
    "fee_rate_maker": "0.001"
  },
  {
    "pair": "ETH/KRW",
    "base_currency": "KRW",
    "quote_currency": "ETH",
    "quote_order_unit": "0.00010000",
    "fee_rate_taker": "0.001",
    "fee_rate_maker": "0.001"
  }
]

Get a list of available currency pairs for trading.

HTTP Request

GET /v0.4/public/pairs

Request Param

N/A

Response Body

Field Name	Type	Description
	array	Array of currency pairs
pair	string	Pair identifier
base_currency	string	Name of base currency
quote_currency	string	Name of quote currency
quote_order_unit	string	Minimum order unit for quote; order quantity should be a multiple of this unit.
fee_rate_taker	string	fee rate for taker
fee_rate_maker	string	fee rate for maker

Please refer to Order Price Unit to get the minimum order price.

Ticker

Request URI

curl https://partner.gdac.com/v0.4/public/tickers/BTC%2FKRW

Response Body

{
  "pair": "BTC/KRW",
  "last": "4251000",
  "open": "4213000",
  "low": "4202000",
  "high": "4271000",
  "volume": "247.52648136",
  "dtime": "2019-03-01T11:00:00Z"
}

Get market ticker for a trading pair.

HTTP Request

GET /v0.4/public/tickers/{pair}

Request Param

Parameter Name	Required	Description	Example
pair	Y	Pair identifier	BTC/KRW

Response Body

Field Name	Type	Description
pair	string	Pair identifier
last	string	Last trade price
open	string	Last trade price 24 hours ago
low	string	Lowest trade price for 24 hours
high	string	Highest trade price for 24 hours
volume	string	Total trade volume for 24 hours
dtime	string	Ticker timestamp

Tickers

Request URI

curl https://partner.gdac.com/v0.4/public/tickers

Response Body

[
  {
    "pair": "BTC/KRW",
    "last": "4251000",
    "open": "4213000",
    "low": "4202000",
    "high": "4271000",
    "volume": "247.52648136",
    "dtime": "2007-03-01T11:00:00Z"
  },
  {
    "pair": "ETH/KRW",
    "last": "4720",
    "open": "4705",
    "low": "4505",
    "high": "4720",
    "volume": "25351.20553302",
    "dtime": "2007-03-01T11:00:00Z"
  }
]

Get market ticker for all trading pairs.

HTTP Request

GET /v0.4/public/tickers

Response Body

Returns an array of ticker response.

Trades

Request URI

curl https://partner.gdac.com/v0.4/public/trades?pair=BTC%2FKRW&offset=2019-02-28T01%3A12%3A31Z&limit=100

Response Body

[
  {
    "pair": "BTC/KRW",
    "side": "S",
    "price": "4252000.00000000",
    "quantity": "3.51234406",
    "trade_dtime": "2019-02-27T06:29:56Z"
  },
  {
    "pair": "BTC/KRW",
    "side": "S",
    "price": "4251000.00000000",
    "quantity": "1.93214406",
    "trade_dtime": "2019-02-27T06:29:54Z"
  }
]

Get the latest trades for a trading pair. The trade list is returned in descending order.

HTTP Request

GET /v0.4/public/trades

Request Param

Parameter Name	Required	Description	Example
pair	Y	Pair identifier	BTC/KRW
offset	N	Timestamp in datetime format. If assigned, a list of trades older than offset is returned	2019-02-28T01:12:31Z
limit	N	default: 50	50

Response Body

Field Name	Type	Description
	array	Array of latest trades
pair	string	Pair identifier
side	string	Trade side; S: Sell, B: Buy
price	string	Trade price
quantity	string	Trade quantity
trade_dtime	string	Trade timestamp

Orderbook

Request URI

curl https://partner.gdac.com/v0.4/public/orderbook?pair=BTC%2FKRW

Response Body

{
  "ask": [
    {
      "price": "4372000",
      "volume": "0.18566022"
    },
    {
      "price": "4373000",
      "volume": "0.01586508"
    }
  ],
  "bid": [
    {
      "price": "4233000",
      "volume": "0.00800000"
    },
    {
      "price": "4227000",
      "volume": "19.62506668"
    }
  ]
}

Get a list of open orders for a trading pair. It returns the 50 best bid/asks

HTTP Request

GET /v0.4/public/orderbook

Request Param

Parameter Name	Required	Description
pair	Y	Pair identifier

Response Body

Field Name	Type	Description
ask	array	Sell side array of price levels
bid	array	Buy side array of price levels
price	string	Price level
volume	string	Total volume of orders at specified price level

Currencies

Request URI

curl https://partner.gdac.com/v0.4/public/currencies

Response Body

[
  {
    "currency": "BTC",
    "name": "Bitcoin",
    "precision": "8"
  },
  {
    "currency": "ETC",
    "name": "Ethereum",
    "precision": "8"
  }
]

Return a list of all currencies and their decimal precision.

HTTP Request

GET /v0.4/public/currencies

Request Param

N/A

Response Body

Field Name	Type	Description
	array	Array of currencies
currency	string	Currency identifier
name	string	Currency name
precision	string	Currency precision (in decimals). Currently 8 for all assets

Account

Balance

Request URI

curl https://partner.gdac.com/v0.4/balance

Response Body

[
  {
    "currency": "BTC",
    "balance": "0.18566022",
    "available": "0.13166022"
  },
  {
    "currency": "ETH",
    "balance": "0.01586508",
    "available": "0.00800000"
  }
]

Get account info about available and total balance for each currency.

HTTP Request

GET /v0.4/balance

Request Param

Parameter Name	Required	Description	Example
currency	N	Currency identifier	BTC

Response Body

Field Name	Type	Description
	array	Array of currency balances
currency	string	Currency identifier
balance	string	Total balance for currency
available	string	Funds available (withdrawal/trading) for currency

Order

Place a new Order

Request URI

curl -d '{"pair":"BTC/KRW","side":"B","price":"1000.000","quantity":"10.1021"}'  -H "Content-Type: application/json" -X POST https://partner.gdac.com/v0.4/orders

Response Body

{
  "pair": "BTC/KRW",
  "order_id": "1902270000000030060"
}

Place a new buy or sell order.

HTTP Request

POST /v0.4/orders

Request Body

Field Name	Required	Description
pair	Y	Pair identifier
side	Y	Order type (buy or sell) "B":Buy, "S":Sell)
price	Y	Price at which you wish to buy/sell
quantity	Y	Quantity you wish to buy/sell

Response Body

Field Name	Type	Description
pair	Y	Pair identifier
order_id	string	Order identifier

Cancel an order

Request URI

curl -X DELETE https://partner.gdac.com/v0.4/orders?order_id=1901323000111044636

Response Body

{
  "pair": "BTC/KRW",
  "order_id": "1902270000000030060"
}

Cancel an open buy or sell order.

HTTP Request

DELETE /v0.4/orders

Request Param

Parameter Name	Required	Description
order_id	Y	Order identifier

Response Body

Field Name	Type	Description
pair	string	Pair identifier
order_id	string	Order identifier

Get Order Status

Request URI

curl https://partner.gdac.com/v0.4/orders/1902270000000030060

Response Body

{
  "pair": "BTC/KRW",
  "order_id": "1902270000000030060",
  "status": "P",
  "price": "1000.0000",
  "quantity": "10.1021",
  "open_quantity": "7.8712",
  "created_dtime": "2019-03-01T11:00:00Z"
}

Get a single order by order id.

HTTP Request

GET /v0.4/orders/{order_id}

Request Param

Parameter Name	Required	Description
order_id	Y	Order identifier

Response Body

Field Name	Type	Description
pair	string	Pair identifier
order_id	string	Order identifier
status	string	O:Open, P:PartiallyFilled, F:Filled, C:Canceled
side	string	Order type (buy or sell). "B":Buy, "S":Sell
price	string	Price at which you wish to buy/sell
quantity	string	Quantity you wish to buy/sell
open_quantity	string	Remaining amount waiting to be filled.
created_dtime	string	Order creation time

List Open Orders

Request URI

curl https://partner.gdac.com/v0.4/orders?pair=BTC%2FKRW&offset=2019-02-28T01%3A12%3A31Z&limit=100

Response Body

[
  {
    "pair": "BTC/KRW",
    "order_id": "1902270000000030060",
    "status": "P",
    "price": "1000.0000",
    "quantity": "10.1021",
    "open_quantity": "7.8712",
    "created_dtime": "2019-03-01T11:00:00Z"
  },
  {
    "pair": "BTC/KRW",
    "order_id": "1902270000000030059",
    "status": "P",
    "price": "950.0000",
    "quantity": "12.8182",
    "open_quantity": "0.8712",
    "created_dtime": "2019-03-01T10:31:00Z"
  }
]

Get a list of the user's open orders.

HTTP Request

GET /v0.4/orders

Request Param

Parameter Name	Required	Description
pair	N	Pair identifier
offset	N	Timestamp in datetime format. If assigned, a list of orders older than offset is returned
limit	N	default: 50
status	N	Status filter. Can be combined with the following~ O:Open, P:PartiallyFilled, C:Canceled. i.e. "OP". If not specified, a list of all open orders is returned

Response Body

Field Name	Type	Description
	array	Array of orders
pair	string	Pair identifier
order_id	string	Order identifier
status	string	O:Open, P:PartiallyFilled, C:Canceled
side	string	Order type (buy or sell) "B":Buy, "S":Sell)
price	string	Price at which you wish to buy/sell
quantity	string	Quantity you wish to buy/sell
open_quantity	string	Remaining amount waiting to be filled. If `side` is "B", then `open_quantity` is in `base_currency` units, otherwise `open_quantity` is in `quote_currency` units.
created_dtime	string	Order creation time

Trade

Trade History

Request URI

curl https://partner.gdac.com/v0.4/trades?pair=BTC%2FKRW&offset=2019-02-28T01%3A12%3A31Z&limit=100

Response Body

[
  {
    "pair": "BTC/KRW",
    "trade_id": "1902270000000022289",
    "order_id": "1902270000000030059",
    "side": "S",
    "price": "4252000.00000000",
    "quantity": "3.51234406",
    "trade_dtime": "2019-02-27T06:29:56Z",
    "fee": "14934.00000000",
    "fee_currency": "KRW",
    "type": "M"
  },
  {
    "pair": "BTC/KRW",
    "trade_id": "1902270000000022287",
    "order_id": "1902270000000030053",
    "side": "S",
    "price": "4251000.00000000",
    "quantity": "1.93214406",
    "trade_dtime": "2019-02-27T06:29:54Z",
    "fee": "8213.00000000",
    "fee_currency": "KRW",
    "type": "M"
  }
]

Get a list of a user's trades.

HTTP Request

GET /v0.4/trades

Request Param

Parameter Name	Required	Description
pair	Y	Pair identifier
offset	N	Timestamp in datetime format. If assigned, a list of trades older than offset is returned
limit	N	default: 50

Response Body

Field Name	Type	Description
	array	Array of trades
pair	string	Pair identifier
trade_id	string	Trade identifier
order_id	string	Order identifier
side	string	Order type (buy or sell) "B":Buy, "S":Sell)
price	string	Price at which you wish to buy/sell
quantity	string	Quantity you wish to buy/sell
trade_dtime	string	Time of the trade
fee	string	Fee for transaction, withdrawal, etc.
fee_currency	string	Currency identifier for fee
type	string	M:Maker, T:Taker

Wallets

Transfers

Request URI

curl https://partner.gdac.com/v0.4/wallets/transfers

Response Body

[
    {
        "trans_txid": "0x0000847e9e838c7f9a389aaf2a2c7b2e3b70eb13b03eee83d2853ce179d83eb1",
        "trans_id": "2123123",
        "trans_dtime": "2023-10-10T01:23:45Z",
        "trans_type": "D",
        "url": "https://etherscan.io/tx/",
        "from_addr": "0x12345b0372a2b9d1b6c368168a668d2068a616b1",
        "asset": "ETH",
        "description": "",
        "trans_state": "5",
        "admin_memo": null,
        "trans_quantity": "0.56700000",
        "confirm_status": "completed",
        "confirm_dtime": "2023-10-10T02:34:56Z",
        "confirm_count": "7/3"
    }
]

Get account transfer(transaction) history.

HTTP Request

GET /v0.4/wallets/transfers

Request Param

Parameter Name	Required	Description	Example
offset	Y	Offset	15
count	Y	Number of transaction to load	20
asset	N	Currency identifier	BTC

Response Body

Field Name	Type	Description
	array	Array of all transfers matching request condition
trans_txid	string	TXID on the blockchain network
trans_id	string	transaction identifier (inside GDAC)
trans_dtime	string	transaction time in ISO format
trans_type	string	transaction type
url	string	explorer url (if exists)
from_addr	string	from address
asset	string	currency identifier
description	string	additional comment
trans_state	string	1: requested, 5: completed, 8: failure, 9: user cancelled, ...
admin_memo	string	admin memo, comment
trans_quantity	string	transaction amount
confirm_status	string	block confirmation status
confirm_dtime	string	transaction confirm time in ISO format
confirm_count	string	block confirmation count

Transfer Status

Request URI

curl https://partner.gdac.com/v0.4/wallets/transfers/status

Response Body

[
    {
        "trans_txid": "0x0000847e9e838c7f9a389aaf2a2c7b2e3b70eb13b03eee83d2853ce179d83eb1",
        "trans_id": "2123123",
        "trans_dtime": "2023-10-10T01:23:45Z",
        "trans_type": "D",
        "url": "https://etherscan.io/tx/",
        "from_addr": "0x12345b0372a2b9d1b6c368168a668d2068a616b1",
        "asset": "ETH",
        "description": "",
        "trans_state": "5",
        "admin_memo": null,
        "trans_quantity": "0.56700000",
        "confirm_status": "completed",
        "confirm_dtime": "2023-10-10T02:34:56Z",
        "confirm_count": "7/3"
    }
]

Get account transfer(transaction) status.

HTTP Request

GET /v0.4/wallets/transfers/status

Request Param

Parameter Name	Required	Description	Example
trans_id	Y	Transfer ID	10123
asset	N	Currency identifier	BTC
count	N	Number of transaction to load status	20

Response Body

Field Name	Type	Description
	array	Array of one requested transfer information
trans_txid	string	TXID on the blockchain network
trans_id	string	transaction identifier (inside GDAC)
trans_dtime	string	transaction time in ISO format
trans_type	string	transaction type
url	string	explorer url (if exists)
from_addr	string	from address
asset	string	currency identifier
description	string	additional comment
trans_state	string	1: requested, 5: completed, 8: failure, 9: user cancelled, ...
admin_memo	string	admin memo, comment
trans_quantity	string	transaction amount
confirm_status	string	block confirmation status
confirm_dtime	string	transaction confirm time in ISO format
confirm_count	string	block confirmation count

Withdrawal Address List

Request URI

curl https://partner.gdac.com/v0.4/wallets/crypto/withdrawal/accounts

Response Body

[
  {
      "wda_id": "1234",
      "asset": "ETH",
      "name": "TESTADDR",
      "address": "0x0000000000000000000000000000000000000000"
  },
  {
      "wda_id": "1235",
      "asset": "ETH",
      "name": "TESTADDR2",
      "address": "0x0000000000000000000000000000000000000001"
  }
]

Get a list of address registered for withdrawal.

HTTP Request

GET /v0.4/wallets/crypto/withdrawal/accounts

Request Param

Parameter Name	Required	Description	Example
asset	Y	Currency identifier	ETH

Response Body

Field Name	Type	Description
	array	Array of withdrawal address
wda_id	string	address identifier
asset	string	currency identifier
name	string	user-registered alias of address
address	string	actual wallet address

Withdraw Asset

Request URI

curl https://partner.gdac.com/v0.4/wallets/crypto/withdraw

Response Body

{
    "trans_id": "2915448",
    "auth": {
        "success": "Y"
    }
}

Get a list of address registered for withdrawal.

HTTP Request

POST /v0.4/wallets/crypto/withdraw

Request Param

Parameter Name	Required	Description	Example
asset	Y	Currency identifier	ETH
quantity	Y	amount of asset to withdraw	0.1235
wda_id	N	`wda_id` of address to withdraw. Can check `wda_id` on withdrawal/accounts API. Not necessary when asset is KRW	1101
memo_id	N	Withdrawal memo/destination tag/etc. should specfy when required	1234

Response Body

Field Name	Type	Description
trans_id	string	withdrawal transaction identifier (inside GDAC)
auth	object	auth information
success	string	Y if request was successful

Check Balance DEPRECATED

Retrieves balance and open order (buy/sell) information.

Request URI

https://partner.gdac.com/v0.4/api/wallets/balances?market=KRW

Response Body

{
  "code": "0",
  "data": {
    "base_asset": {
      "asset": "KRW",
      "quantity": "258719.00000000",
      "order_available": "0.00000000",
      "order_open": {
        "sell": "0.00000000",
        "buy": "0.00000000"
      }
    },
    "cryptos": [
      {
        "asset": "BTC",
        "quantity": "0.02125590",
        "avg_buy_price": "1341109.99769476",
        "order_available": "0.02125590",
        "order_open": {
          "sell": "0.00000000",
          "buy": "0.67571382"
        }
      }
    ],
    "open_order": [
      {
        "asset": "BCH",
        "sell": 0,
        "buy": 0,
        "markets": ["KRW"]
      }
    ]
  }
}

HTTP Request

GET https://partner.gdac.com/v0.4/api/wallets/balances

Request params

Parameter	Type	Required	Description
market	String	Y	currently supported markets are 'KRW' and 'GT'

Response Body

Field		Type	Description
base_asset, crypto	asset	String	name of unit
	quantity	String	KRW/asset quantity owned
	avg_buy_price	String	avg. buy price
	order_available	String	maximum order quantity
	order_open	String	no. of open buy/sell orders
open_order	asset	String	name of unit
	sell	Number	no. of sell orders
	buy	Number	no. of buy orders
	markets	String	name of market

Introduction

Revision History

General

Rate Limit

Datetime Format

Endpoint URL

Error

Order Price Unit

Authentication

Creating an authentication token

JWT Payload Format

Creating a JWT Signature

Creating a request with an authentication token

api_key and secret_key Issuance method

HTTP GET Example in Python with API Key

Market Data

Pairs

HTTP Request

Request Param

Response Body

Ticker

HTTP Request

Request Param

Response Body

Tickers

HTTP Request

Response Body

Trades

HTTP Request

Request Param

Response Body

Orderbook

HTTP Request

Request Param

Response Body

Currencies

HTTP Request

Request Param

Response Body

Account

Balance

HTTP Request

Request Param

Response Body

Order

Place a new Order

HTTP Request

Request Body

Response Body

Cancel an order

HTTP Request

Request Param

Response Body

Get Order Status

HTTP Request

Request Param

Response Body

List Open Orders

HTTP Request

Request Param

Response Body

Trade

Trade History

HTTP Request

Request Param

Response Body

Wallets

Transfers

HTTP Request

Request Param

Response Body

Transfer Status

HTTP Request

Request Param

Response Body

Withdrawal Address List

HTTP Request

Request Param

Response Body

Withdraw Asset

`api_key` and `secret_key` Issuance method