Verifying a Lemin Captcha Answer

To verify a Lemin Captcha, your back-end needs to make a POST call with a JSON body to our server, containing the following three parameters: “private_key”, “challenge_id”, and “answer”

Verification request should not be done in the client and it must be done in the back-end, otherwise, you will expose your private_key.

https://api.leminnow.com/captcha/v1/cropped/validate

Private Key

Your private key is used for verifying Lemin Captcha ownership. You can find your unique private key in the “Account” section of your Lemin dashboard.

Generating JavaScript Code for Captcha

CLICK HERE TO ACCESS YOUR ACCOUNT

 

Do not use a GET request to call /v1/cropped/validate. Use a POST request, All request bodies should have content-type application/json and be valid JSON.

curl --location --request POST https://api.leminnow.com/captcha/v1/cropped/validate \
--header 'Content-Type: application/json' \
--data-raw '{
"private_key": "f902f944-7009-4764-97a3-c7bab9b5fe85",
"challenge_id": "854374ce-99d7-4721-81f4-8acfc460356d",
"answer": "0xax76x0xax6sx0x0x6sx0x0x6ix0x0x68x0x0x5ux0x0x5kx0xax5kx0xax5ax0xax50x0xax4mx0xax4cx"
}'

 

Key Description Example
private_key A key for Lemin Captcha ownership verification. This is obtained from your “Account” in the Lemin Dashboard f902f944-7009-4764-97a3-c7bab9b5fe85
challenge_id A key for Lemin Captcha. Our server checks this to identify your Lemin Captcha. This is obtained from the form-data explained in the previous section. 854374ce-99d7-4721-81f4-8acfc460356d
answer The encrypted website visitor's answer for Lemin Captcha verification. This is obtained from the form-data explained in the previous section.

 

0xax76...

 

 

Next Article: Verification Result