Add captcha to faucet

[fainashalts]

To further protect ourselves from sybil attacks we're adding a captcha to the faucet frontend flow!

[tremarkley]

Checked the mixpanel usage numbers and it does not look like adding the captcha has decreased the amount of faucet usage: https://mixpanel.com/project/3232303/view/3741795/app/boards#id=7873539. It is possible that the captcha is not properly filtering out bots since it seems like we still have a suspicious amount of claims coming through.

[fainashalts]

I just tried it and was not presented with a captcha -- perhaps this is not working?

[tremarkley]

@jvmi7 has more context on this, but Privy uses a Cloudflare turnstile captcha that they intentionally hide in the UI and it will only be shown if the captcha fails

[fainashalts]

ohhh cool so its just something we enable through Privy? got it, thanks for explaining!

[nitaliano]

Closing this out since it's enabled with privy

[tremarkley]

the privy captcha has not been effective at stopping bots, we may want to consider adding our own captcha within the claim flow