[v0/v1] Discuss faucet security concerns

[waymobetta]

Before launching, we'll need to discuss security concerns regarding:

• rate-limiting
• captcha
• notoriously bad IP blocking --> https://getipintel.net/

TODO:

• review
• incorporate feedback into [v0] Develop front-end + review #3 which will carry over into [v1] Develop front-end + review #6

[kristovatlas]

Here are what a few other sites are doing:

• https://faucet.polygon.technology/: CloudFlare CAPTCHA
• https://sepolia-faucet.pk910.de/: ReCAPTCHA
• https://faucet.polygon.technology/: Connect to Discord account
• https://www.bnbchain.org/en/testnet-faucet: hCAPTCHA
• https://core.app/tools/testnet-faucet/?subnet=c&token=c: ReCAPTCHA
• https://solfaucet.com/: Rate limited

I would recommend starting with one of the major CAPTCHA providers such as CloudFlare, ReCAPTCHA, or hCAPTCHA. This might be good-enough.