Bitget Wallet Docs

# BKConnect（Deeplink）

# Introduction

BKConnect is a Deeplink-based solution that helps developers launch Bitget Wallet app from a DApp and jump to a specified page (with parameters carried), so as to realize fast and stable interaction with Bitget Wallet app.

BKConnect APIs

Deeplink URL supported

TIP

For H5 requests on Android, only https://bkcode.vip?{params} is supported.

  • bitkeep://bkconnect?{params}
  • https://bkcode.vip?{params}

# Public parameter

# Common request parameters

  • version -string protocol version 1.0
  • dappName -string Dapp name
  • dappIcon -string Dapp icon
  • action-string-required Action
  • actionID-string-required The unique ID of the operation. It is recommended to set it to uuid
  • redirectUrl -string Callback url, returned by post request or deeplink (no bitkeep key field must exist).

# Common return parameters

  • status-string The status of request. 0 = success; 1 = fail
  • actionID-string The unique ID of the operation.

# APIs

# Access dapp

No return.

# Request parameters

  • action-string-required value is dapp
  • url-string-required dapp address

# Request sample code

# iOS
//example  https://bkcode.vip?action=dapp&url=https://app.uniswap.org/#/swap
static NSString * kdappScheme = @"https://app.uniswap.org/#/swap";
static NSString * kscheme = @"bitkeep://bkconnect?";
static NSString * khscheme = @"https://bkcode.vip?";

///jumping
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:[self getUrl]] options:@{} completionHandler:nil];

//// get the destination url
/// Get the redirected url
- (NSString *)getUrl {
    NSMutableString *url = [NSMutableString string];
    [url appendString:khscheme];
    [url appendString:[self getDappParameterUrl]];
    NSString *urlScheme = [url stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
    return urlScheme;
}

- (NSString *)getDappParameterUrl {
    NSDictionary *parameDict = @{@"action" : @"dapp",
                                 @"url" : kdappScheme,
    };

    NSMutableString *paramString = [NSMutableString string];
    [parameDict.allKeys enumerateObjectsUsingBlock:^(id  _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
        NSString *paramStr = [NSString stringWithFormat:@"%@=%@",obj,parameDict[obj] ? : @""];
        [paramString appendString:paramStr];
        if ((idx + 1) != parameDict.allKeys.count) {
            [paramString appendString:@"&"];
        }
    }];
    return paramString;
}

  
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# Android
Uri uri = new Uri.Builder()
                   .scheme("bitkeep")
                   .authority("bkconnect")
                   .appendQueryParameter("action", "dapp")
                   .appendQueryParameter("url", url)
                   .appendQueryParameter("version", "1") ///
                   .build();

try {
    Intent intent1 = new Intent(
            Intent.ACTION_VIEW,
            uri
    );
    startActivity(intent1);
}catch (Exception e){

    Log.e("startActivityFail",e.toString());
}

  
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# Flutter
//example  https://bkcode.vip?action=dapp&url=https://app.uniswap.org/#/swap
    final kdappScheme = "https://app.uniswap.org/#/swap";
    final queryParameters = {
      'action': 'dapp',
      'url': kdappScheme,
    };

    Uri scheme = Uri(scheme: 'bitkeep', queryParameters: queryParameters);
    if(await canLaunchUrl(scheme)){
    await launchUrl(scheme);
    } else {
    KLog.e('launch app fail');
    }

  
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# H5
https://bkcode.vip?action=dapp&url={dapp_url}

  
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# Authorize / Get the specified network account address

# Request parameters

# Return parameters

  • address-string Address

# Request sample code

# iOS
/*
 example
//https://bkcode.vip?chain=eth&action=getAccount
*/
static NSString * kscheme = @"bitkeep://bkconnect?";
static NSString * khscheme = @"https://bkcode.vip?";
///jumping
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:[self getUrl]] options:@{} completionHandler:nil];
/// get the destination url
/// Get the redirected url
- (NSString *)getUrl {
    NSMutableString *url = [NSMutableString string];
    [url appendString:khscheme];
    [url appendString:[self getAccountParameterUrl]];

    NSString *urlScheme = [url stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
    return urlScheme;
}

//Specify the chain, such as eth, btc, trx
- (NSString *)getAccountParameterUrl {
    NSDictionary *parameDict = @{@"action" : @"getAccount",
                                 @"chain" : @"eth",
    };

    NSMutableString *paramString = [NSMutableString string];
    [parameDict.allKeys enumerateObjectsUsingBlock:^(id  _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
        NSString *paramStr = [NSString stringWithFormat:@"%@=%@",obj,parameDict[obj] ? : @""];
        [paramString appendString:paramStr];
        if ((idx + 1) != parameDict.allKeys.count) {
            [paramString appendString:@"&"];
        }
    }];
    return paramString;
}

  
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# Android
 Uri uri = new Uri.Builder()
                 .scheme("bitkeep")
                 .authority("bkconnect")
                .appendQueryParameter("action", "getAccount")
                .appendQueryParameter("dappIcon", icon)
                .appendQueryParameter("actionId", actionId)
                .appendQueryParameter("redirectUrl", redirectUrl)
                .appendQueryParameter("dappName", name)
                .appendQueryParameter("chain", chain)
                .appendQueryParameter("version", "1")
                .build();

try {
    Intent intent1 = new Intent(
            Intent.ACTION_VIEW,
            uri
    );
    startActivity(intent1);
}catch (Exception e){

    Log.e("startActivityFail",e.toString());
}

  
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# Flutter
/*
 example
//https://bkcode.vip?chain=eth&action=getAccount
*/
//Specify the chain, such as eth, btc, trx
    final queryParameters = {
      'action': 'getAccount',
      'chain' : 'eth',
    };

    Uri scheme = Uri(scheme: 'bitkeep', queryParameters: queryParameters);
    if(await canLaunchUrl(scheme)){
      await launchUrl(scheme);
    } else {
      KLog.e('launch app fail');
    }

  }

  
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# H5
https://bkcode.vip?chain={chain}&action=getAccount

  
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# Add the token

# Request parameters

  • action-string-required Value is addAsset
  • chain-string-required The chain name, E.g: eth, btc, trx Click here for more info
  • contract-string-required The contract address; default = 0x
  • symbol-string-required The contract‘s symbol

# return parameters

  • status-string The status of request. 0 = success; 1 = fail

# Request sample code

# iOS
/*
 example
//https://bkcode.vip?chain=eth&contract=0x3hdh37xxxxxx&symbol=tokennamexxxxx&action=addAsset
*/
static NSString * kscheme = @"bitkeep://bkconnect?";
static NSString * khscheme = @"https://bkcode.vip?";
///Jumping
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:[self getUrl]] options:@{} completionHandler:nil];
/// get the destination url
/// Get the redirected url
- (NSString *)getUrl {
    NSMutableString *url = [NSMutableString string];
    [url appendString:khscheme];
    [url appendString:[self getAddAssetParameterUrl]];

    NSString *urlScheme = [url stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
    return urlScheme;
}

//action     addAsset //required
//chain      String   //Specify the chain, such as eth, btc, trx
//contract   String   //Specify the Token contract address; default = 0x
//symbol     String   //Token name
- (NSString *)getAddAssetParameterUrl {
    NSDictionary *parameDict = @{@"action" : @"addAsset",
                                 @"chain" : @"eth",
                                 @"contract" : @"0x3hdh37xxxxxx",
                                 @"symbol" : @"tokennamexxxxx",
    };

    NSMutableString *paramString = [NSMutableString string];
    [parameDict.allKeys enumerateObjectsUsingBlock:^(id  _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
        NSString *paramStr = [NSString stringWithFormat:@"%@=%@",obj,parameDict[obj] ? : @""];
        [paramString appendString:paramStr];
        if ((idx + 1) != parameDict.allKeys.count) {
            [paramString appendString:@"&"];
        }
    }];
    return paramString;
}


  
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# Android
 Uri uri = new Uri.Builder()
            .scheme("bitkeep")
            .authority("bkconnect")
            .appendQueryParameter("action", "addAsset")
            .appendQueryParameter("contract", contract)
            .appendQueryParameter("chain", chain)
            .appendQueryParameter("redirectUrl", redirectUrl)
            .appendQueryParameter("dappName", name)
            .appendQueryParameter("dappIcon", icon)
            .appendQueryParameter("symbol", symbol)
            .appendQueryParameter("actionId", actionId)
            .appendQueryParameter("version", "1")
            .build();

try {
    Intent intent1 = new Intent(
            Intent.ACTION_VIEW,
            uri
    );
    startActivity(intent1);
}catch (Exception e){

    Log.e("startActivityFail",e.toString());
}

  
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# Flutter
/*
 example
//https://bkcode.vip?chain=eth&contract=0x3hdh37xxxxxx&symbol=tokennamexxxxx&action=addAsset
*/
//Specify the Token contract address; default = 0x
    final queryParameters = {
      'action': 'addAsset',
      'chain' : 'eth',
      'contract': '0x3hdh37xxxxxx',
      'symbol' : 'tokennamexxxxx',
    };

    Uri scheme = Uri(scheme: 'bitkeep', queryParameters: queryParameters);
    if(await canLaunchUrl(scheme)){
      await launchUrl(scheme);
    } else {
      KLog.e('launch app fail');
    }

  
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# H5
https://bkcode.vip?chain={chain}&contract={contract_addess}&symbol={contract_symbol}&action=addAsset

  
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# Send the transaction

# Request parameters

  • action-string-required Value is send
  • chain-string-required The chain name, E.g: eth, btc, trx Click here for more info
  • contract-string-required The contract address(mainnet'address is replaced by '0x0’)
  • to-string-required payment address
  • amount-string-required transfer amount
  • memo-string transfer note

# Return parameters

  • hash-string The Hash of the transaction

# Request sample code

# iOS
/*
 example
//https://bkcode.vip?chain=eth&contract=0x3hdh37xxxxxx&symbol=tokennamexxxxx&action=send
*/
static NSString * kscheme = @"bitkeep://bkconnect?";
static NSString * khscheme = @"https://bkcode.vip?";
///Jumping
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:[self getUrl]] options:@{} completionHandler:nil];
/// get the destination url
/// Get the redirected url
- (NSString *)getUrl {
    NSMutableString *url = [NSMutableString string];
    [url appendString:khscheme];
    [url appendString:[self getAddAssetParameterUrl]];
    NSString *urlScheme = [url stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
    return urlScheme;
}

//action    send   ///required
//chain     String //Specify the chain, such as eth, btc, trx
//contract  String //Contract address, default = 0x
//to        String    // Payment address
//amount    String // Transfer amount, required
//memo      String // Transfer remarks, optional
- (NSString *)getSendParameterUrl {
    NSDictionary *parameDict = @{@"action" : @"send",
                                 @"chain" : @"eth",
                                 @"contract" : @"0x3hdh37xxxxxx",
                                 @"to" : @"0x3hxxxxdh37xxxxxx",
                                 @"amount" : @"0.1",
                                 @"memo" : @"memoMesg",
    };

    NSMutableString *paramString = [NSMutableString string];
    [parameDict.allKeys enumerateObjectsUsingBlock:^(id  _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
        NSString *paramStr = [NSString stringWithFormat:@"%@=%@",obj,parameDict[obj] ? : @""];
        [paramString appendString:paramStr];
        if ((idx + 1) != parameDict.allKeys.count) {
            [paramString appendString:@"&"];
        }
    }];
    return paramString;
}


  
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# Android
Uri uri = new Uri.Builder()
            .scheme("bitkeep")
            .authority("bkconnect")
            .appendQueryParameter("action", "send")
            .appendQueryParameter("from", from)
            .appendQueryParameter("to", to)
            .appendQueryParameter("contract", contract)
            .appendQueryParameter("amount", amount)
            .appendQueryParameter("redirectUrl", redirectUrl)
            .appendQueryParameter("dappName", name)
            .appendQueryParameter("dappIcon", icon)
            .appendQueryParameter("chain", chain)
            .appendQueryParameter("memo", "xxxxxmemo")
            .appendQueryParameter("actionId", actionId)
            .appendQueryParameter("version", "1")
            .build();

try {
    Intent intent1 = new Intent(
            Intent.ACTION_VIEW,
            uri
    );
    startActivity(intent1);
}catch (Exception e){

    Log.e("startActivityFail",e.toString());
}

  
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# Flutter

    final queryParameters = {
      'action': 'send',
      'chain' : 'eth',
      'contract': '0x3hdh37xxxxxx',
      'to' : '0x3hxxxxdh37xxxxxx',
      'amount' : '0.1',
      'memo' : 'memoMesg',
    };

    Uri scheme = Uri(scheme: 'bitkeep', queryParameters: queryParameters);
    if(await canLaunchUrl(scheme)){
      await launchUrl(scheme);
    } else {
      // KLog.e('launch app fail');
    }

  
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# H5
https://bkcode.vip?chain={chain}&contract={contract_address}&to={to_address}&amount={amount}&memo={memo}&action=addAsset

  
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# Sign

# Request parameters

  • action-string-required Value is sign
  • chain-string-required The chain name, E.g: eth, btc, trx Click here for more info
  • signType-string-required Signature type, range of value: eth_sign, personal_sign, eth_signTypedData, eth_signTypedData_v3, eth_signTypedData_v4
  • msg-string-required Signature information

# Return parameters

  • sign-string Signature information

# Request sample code

# iOS
/*
 example
//https://bkcode.vip?chain=eth&msg=[{"type":"string","name":"Message","value":"Hi, Alice!"},{"type":"uint32","name":"A number","value":"1337"}]&signType=personal_sign&action=sign

 ///https://bkcode.vip?chain=eth&msg=%5B%7B%22type%22:%22string%22,%22name%22:%22Message%22,%22value%22:%22Hi,%20Alice!%22%7D,%7B%22type%22:%22uint32%22,%22name%22:%22A%20number%22,%22value%22:%221337%22%7D%5D&signType=personal_sign&action=sign
*/
static NSString * kscheme = @"bitkeep://bkconnect?";
static NSString * khscheme = @"https://bkcode.vip?";
///Jumping
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:[self getUrl]] options:@{} completionHandler:nil];
/// get the destination url
/// Get the redirected url
- (NSString *)getUrl {
    NSMutableString *url = [NSMutableString string];
    [url appendString:khscheme];
    [url appendString:[self getSignParameterUrl]];
    NSString *urlScheme = [url stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
    return urlScheme;
}
//action   sign   //required
//chain    String //Specify the chain, such as eth, btc, trx
//signType String //Signature type eth_sign personal_sign eth_signTypedData eth_signTypedData_v3 eth_signTypedData_v4
//msg      String //Signature information
- (NSString *)getSignParameterUrl {
    NSDictionary *parameDict = @{@"action" : @"sign",
                                 @"chain" : @"eth",
                                 @"signType" : @"personal_sign",
                                 @"msg" : @"[{\"type\":\"string\",\"name\":\"Message\",\"value\":\"Hi, Alice!\"},{\"type\":\"uint32\",\"name\":\"A number\",\"value\":\"13337\"}]",
    };

    NSMutableString *paramString = [NSMutableString string];
    [parameDict.allKeys enumerateObjectsUsingBlock:^(id  _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
        NSString *paramStr = [NSString stringWithFormat:@"%@=%@",obj,parameDict[obj] ? : @""];
        [paramString appendString:paramStr];
        if ((idx + 1) != parameDict.allKeys.count) {
            [paramString appendString:@"&"];
        }
    }];
    return paramString;
}

  
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# Android
 //Signature type  personal_sign eth_signTypedData eth_sign eth_signTypedData_v3 eth_signTypedData_v4
 String signType = 'personal_sign';
 Uri uri = new Uri.Builder()
            .scheme("bitkeep")
            .authority("bkconnect")
            .appendQueryParameter("action", "sign")
            .appendQueryParameter("redirectUrl", redirectUrl)
            .appendQueryParameter("dappName", name)
            .appendQueryParameter("dappIcon", icon)
            .appendQueryParameter("actionId", actionId)
            .appendQueryParameter("msg", signMsg)
            .appendQueryParameter("chain", chain) /// 没有可不传
            .appendQueryParameter("signType", signType)
            .appendQueryParameter("version", "1")
            .build();

try {
    Intent intent1 = new Intent(
            Intent.ACTION_VIEW,
            uri
    );
    startActivity(intent1);
}catch (Exception e){

    Log.e("startActivityFail",e.toString());
}

  
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# Flutter
/*
 example
//https://bkcode.vip?chain=eth&msg=[{"type":"string","name":"Message","value":"Hi, Alice!"},{"type":"uint32","name":"A number","value":"1337"}]&signType=personal_sign&action=sign

 ///https://bkcode.vip?chain=eth&msg=%5B%7B%22type%22:%22string%22,%22name%22:%22Message%22,%22value%22:%22Hi,%20Alice!%22%7D,%7B%22type%22:%22uint32%22,%22name%22:%22A%20number%22,%22value%22:%221337%22%7D%5D&signType=personal_sign&action=sign
*/
//chain Specify the chain, such as eth, btc, trx
    final queryParameters = {
      'action': 'sign',
      'chain' : 'eth',
      'signType': 'personal_sign',
      'msg' : '"[{\"type\":\"string\",\"name\":\"Message\",\"value\":\"Hi, Alice!\"},{\"type\":\"uint32\",\"name\":\"A number\",\"value\":\"1337\"}]',
    };

    Uri scheme = Uri(scheme: 'bitkeep', queryParameters: queryParameters);
    if(await canLaunchUrl(scheme)){
      await launchUrl(scheme);
    } else {
      KLog.e('launch app fail');
    }

  
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# H5
https://bkcode.vip?chain={chain}&msg={msg}&signType={sign_type}&action=sign

  
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# Appendix - list of chain values

Chain Value chain Value
Bitcoin btc ClassZZ czz
Ethereum eth HBTC Mainnet hbc
BNB Chain bnb KLAY klay
Heco ht Yotta Mainnet yta
TRON trx ASM Mainnet asm
Polkadot dot TrueChain Mainnet true
DOGE doge SCDO Mainnet scdo
OKC Chain okt KoHO Chain Mainnet khc, kht
Polygon matic ZTB Mainnet ztb
Filecoin fil Bitcoin Classic Mainnet bgh
Avalanche-C avax_c Solana sol
Avalanche-X avax_x Fantom ftm
EOS eos WAX wax
IOST iost ZkSync Lite zks
Terra luna zkSync Era zksv2
Casper Mainnet cspr Qtum Mainnet qtum
Arbitrum arbitrum SubGame Mainnet sgb
FIO Mainnet fio NEAR Protocol Mainnet near
Nervos Network Mainnet ckb Optimism optimism
Cronos Chain cro Elrond Mainnet egld
Dash Mainnet dash Arweave ar
Nervos EVM Mainnet ckbl2 Velas Mainnet vlx
Harmony one Fuse Network fuse
Findora fra KCC Chain kcs
GateChain gt Boba Network boba
Caduceus cmp
Last Updated: 9/7/2023, 1:53:50 PM

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