CODEWITHSUNDEEP
phpcoinbase-apicoinbase-php
Reko Mo
Reko Mo

Reputation: 11

coinbase-php api authenctation error invalid signature

When I send get request to retrieve the latest address it works fine but when I tried to send a post request to generate a new address I get this error authentication error invalid signature

I'm sure everything is correct because I followed their doc but I guess they need to update it

$apiKey = "xx";
$apiSecret = "xxx"; 

$accountId = "accountx";      

$body = '';
$timestamp = time();
$message = $timestamp . 'GET' . '/v2/user' . $body;
$signature = hash_hmac('SHA256', $message, $apiSecret);
$version = '2020-06-23';

$headers = array(
    'CB-ACCESS-SIGN: ' . $signature,
    'CB-ACCESS-TIMESTAMP: ' . $timestamp,
    'CB-ACCESS-KEY: ' . $apiKey,
    'CB-VERSION: ' . $version
); 

$api_url = 'https://api.coinbase.com/v2/user';

$ch = curl_init(); 
curl_setopt($ch, CURLOPT_URL, $api_url);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "GET");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, 1);
    
$data = curl_exec($ch);

curl_close($ch);

$ctx = stream_context_create(["http"=>["user_agent"=>"Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:63.0) Gecko/20100101 Firefox/63.0"]]);

$response_btc = file_get_contents('https://api.coinbase.com/v2/prices/BTC-USD/spot', true, $ctx);

$object_btc = json_decode($response_btc, true);

$usdprice = $object_btc["data"]["amount"];
$btcamount = number_format($amount/$usdprice, 8, '.', '');                    



$body1 = '';
$timestamp1 = time();
$message1 = $timestamp1 . 'POST' . '/v2/accounts/accountx/addresses' . $body1;
$signature1 = hash_hmac('SHA256', $message1, $apiSecret);
$version1 = '2020-06-23';

$headers1 = array(
    'CB-ACCESS-SIGN: ' . $signature1,
    'CB-ACCESS-TIMESTAMP: ' . $timestamp1,
    'CB-ACCESS-KEY: ' . $apiKey,
    'CB-VERSION: ' . $version1,
    'Content-Type: appliaction/json'
); 

$api_url = "https://api.coinbase.com/v2/accounts/accountx/addresses";

$ch = curl_init(); 
curl_setopt($ch, CURLOPT_URL, $api_url);

curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers1);
curl_setopt($ch, CURLOPT_POSTFIELDS, "{\"name\": \"New receive address\"}");
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");                         


  
$data1 = curl_exec($ch);

if(curl_errno($ch))
{
    echo "Errore: " . curl_error($ch);
}
else
{
    echo $data1;
}

curl_close($ch);

Upvotes: 1

Views: 302

Answers (1)

mayanxoni
mayanxoni

Reputation: 83

I was getting the same error, and I solved it using:

json_encode($body);

Upvotes: 0

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