Ask HN: Is this result validation of my product?

Hello,

In the past three weeks I have launched three landing pages. Two based around watches, which didn't really get anywhere.

The third was www.oysteralerts.com which I built and launched on Tuesday. After posting to HN, IndieHacker, Product Hunt and a WhatsApp group I am in, I have 11 pre-registrations along with a handful of those people commenting about how useful this is! A PH employee has even reached out and wants to feature this on the front page.

What has excited me most is the PH feedback and random people from the internet signing up.

Is this enough to show validation of my product? Right now I am thinking to ditch the other two ideas and roll with this for the moment.

Thanks