nft-faucet/NftFaucet/wwwroot/appsettings.json

{
    "EthereumNetworks": [
        {
            "Id": "Ropsten",
            "Erc721ContractAddress": "0x64f27361c19b19f97cad58fefb9bccb27726668a",
            "Erc1155ContractAddress": "0xEf69DFC7E8771bD1BE30a40f0f90FB0Ed98C699A"
        },
        {
            "Id": "PolygonMumbai",
            "Erc721ContractAddress": "0x42f166692662eCaAD8a5E758A2DB8fd7dBb31C24",
            "Erc1155ContractAddress": "0x0742bd8cf4E3a1dd5F1340d52252b260552bf0eA"
        }
    ],
    "IpfsGateways": [
        {
            "Id": "IpfsOfficial",
            "BaseUrl": "https://ipfs.io/ipfs"
        },
        {
            "Id": "Infura",
            "BaseUrl": "https://ipfs.infura.io/ipfs"
        },
        {
            "Id": "NftStorage",
            "BaseUrl": "https://nftstorage.link/ipfs"
        }
    ]
}