TINAC API is running.
Endpoints:
GET /challenge  : Get a random challenge.
    Request body: none needed
    Example response:
        {"id":"unique-id-urlsafe-base64",
        "challenge":["random_challenge1","2", ... ,"50"],
        "steps":50}
GET /challenge_img: Get an image challenge.The image is a compressed bundle of all frames. See source code for format.
    Request body: none needed
    Example response:
        {"id":"unique-id-urlsafe-base64",
        "challenge":{"width":W,"height":H,"count":N,"data":"base64-encoded-compressed-binary-blob"},
        "steps":50}
    Use the same /verify endpoint to verify the answer.
    To decode the image, see the example.html implementation in github.com/itzmetanjim/tinac
GET /challenge_audio: Get an audio challenge.The audio is a base64 encoded mp3 file array.
    Request body: none needed
    Example response:
        {"id":"unique-id-urlsafe-base64",
        "challenge":["base64-encoded-mp3-audio-data1","2", ... ,"50"],
        "steps":50}
    Use the same /verify endpoint to verify the answer.
POST /verify    : Verify an answer (case sensitive).
    Example request body: {"id":"unique-id-urlsafe-base64","answer":"abcd"} or {"id":"unique-id-urlsafe-base64","answer":"abcd", "index": 2}
    Example response: {"answer": true} 
                or: {"answer": true, "index": true}
                or: {"error": "Invalid or expired ID/id parameter required/answer parameter required"}