# Developer

This section helps developers build applications that use drand as a source of randomness. For help running your own drand network, see the Operator's Guide.

The current public League of Entropy drand mainnet API endpoints are:

  • https://api.drand.sh (HTTPS endpoint, also available over HTTP)
  • https://api2.drand.sh (HTTPS endpoint, also available over HTTP)
  • https://api3.drand.sh (HTTPS endpoint, also available over HTTP)
  • https://drand.cloudflare.com (HTTPS endpoint)
  • /dnsaddr/api.drand.sh (1st-level libp2p gossipsub relay endpoint)
  • /dnsaddr/api2.drand.sh (1st-level libp2p gossipsub relay endpoint)
  • /dnsaddr/api3.drand.sh (1st-level libp2p gossipsub relay endpoint)
  • http://drandeokfd5aaz3hr4hfk7mlr23vc63boxrpr44ertumtbousmdgbhad.onion (Tor hidden service)

Mainnet chain hash: 8990e7a9aaed2ffed73dbd7092123d6f289930540d7651336225dc172e51b2ce

In order to retrieve randomness from a drand network you should preferentially use the drand client libraries or the drand-client CLI, which support the different mechanisms and perform verification for every value obtained.

Alternatively, you can interact directly with the endpoints. Make sure to manually verify every value: