> For the complete documentation index, see [llms.txt](https://terra-vegas.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://terra-vegas.gitbook.io/docs/resources/random-number-generation.md).
# Random number generation
In terra.vegas casino, we are using the most decentralized and verifiable source of randomness available in the #Terra ecosystem: #Terrand.\
Combining a non-predictable, bias-resistant and verifiable source of randomness such as #drand and the decentralized censorship of smart contracts, Terrand guarantees the fairness and security of any random number used in terra.vegas games.
Terrand, co-built by the #CosmWasm and the #Loterra team, uses CosmWasm smart contracts to act as a relayer of drand, one of the most secure and recognised random number generators on the Internet.
Drand [https://docs.terrand.dev/](https://docs.terrand.dev/#dapps-using-terrand-as-oracle) is supported by the League of Entropy, a council initiated by Protocol Labs and constituted by reputable institutions such as Cloudflare, the Ethereum Foundation and the UCL.
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