curl "$RHEON_API/v1/currencies" \
  -H "Authorization: Bearer $RHEON_API_KEY"

{
  "crypto": {
    "networks": [
      { "name": "ethereum", "chainId": 1 },
      { "name": "arbitrum", "chainId": 42161 },
      { "name": "base", "chainId": 8453 },
      { "name": "optimism", "chainId": 10 },
      { "name": "polygon", "chainId": 137 }
    ],
    "fundingAssets": ["USDC", "USDT"],
    "settlementAsset": "USDC"
  },
  "fiat": [
    {
      "currency": "EUR",
      "rails": ["sepa", "sepa_instant"],
      "thirdPartyPayers": true,
      "detailsFormat": "iban",
      "asyncProvisioning": false
    },
    {
      "currency": "GBP",
      "rails": ["faster_payments", "bacs", "chaps"],
      "thirdPartyPayers": false,
      "detailsFormat": "account_number",
      "asyncProvisioning": false
    },
    {
      "currency": "USD",
      "rails": ["ach", "wire", "rtp", "swift"],
      "thirdPartyPayers": true,
      "detailsFormat": "account_number",
      "asyncProvisioning": true
    },
    {
      "currency": "BRL",
      "rails": ["pix"],
      "thirdPartyPayers": true,
      "detailsFormat": "key",
      "asyncProvisioning": false
    },
    {
      "currency": "MXN",
      "rails": ["spei"],
      "thirdPartyPayers": true,
      "detailsFormat": "clabe",
      "asyncProvisioning": false
    }
  ]
}