REACT_APP_RPC_URL_SHARD0=https://a.api.s0.t.hmny.io/
REACT_APP_RPC_URL_SHARD1=https://api.s1.t.hmny.io/
REACT_APP_RPC_URL_SHARD2=https://api.s2.t.hmny.io/
REACT_APP_RPC_URL_SHARD3=https://api.s3.t.hmny.io/
REACT_APP_AVAILABLE_SHARDS=0,1,2,3
REACT_APP_EXPLORER_V1_API_URL=https://explorer.pops.one:8888
REACT_APP_INDEXER_IPFS_GATEWAY=https://ipfs.io/ipfs/
REACT_APP_PROD_ADDRESS=https://explorer-v2-api.hmny.io/
REACT_APP_DEV_ADDRESS=https://ws.explorer-v2.hmny.io/