|
algorithm
|
String |
Cryptographic algorithm used to generate the proof-of-work/CAPTCHA challenge |
|
challenge
|
String |
Unique challenge string to be solved or signed by the client |
|
maxnumber
|
Integer |
Maximum integer bound used for the proof-of-work search space |
|
salt
|
String |
Random salt appended to the challenge string during verification |
|
signature
|
String |
Server-generated signature validating the authenticity of the challenge |
|
expires
|
Integer |
Unix timestamp indicating when the CAPTCHA challenge becomes invalid |