Are these like public randomness beacons? NIST[0] and Cloudflare[1] have them. I guess use cases are lotteries that are publicly verifiable, election auditing...

[0] https://csrc.nist.gov/projects/interoperable-randomness-beac...

[1] https://drand.love/

[2] https://blog.cloudflare.com/league-of-entropy/