List DeFi Chains

Returns the list of blockchains available in DeFi ratings. Use the returned `slug` values as the `chain` filter parameter in `GET /ratings/defi` and `GET /ratings/defi/{provider-slug}`.

curl -X GET "https://api.stakingrewards.com/ratings/defi/chains"

{
  "chains": [
    {
      "slug": "ethereum-2-0",
      "name": "Ethereum"
    }
  ]
}