default to use registry.ping.pub for ibc file retrievals

.env.example

@@ -1,4 +1,22 @@
 # rename to .env.local or .env.<your_environment>
-VITE_REFRESH_INTERVAL=2000
-VITE_FETCH_ALL_BLOCKS=true
-VITE_RECENT_BLOCK_LIMIT=100
+
+# Refresh interval for the app to query api for new blocks
+VITE_REFRESH_INTERVAL=6000
+
+# Enable fetching all blocks (this can increase api calls to public nodes resulting in rate limiting)
+VITE_FETCH_ALL_BLOCKS=false
+
+# Limit for recent blocks and associated transactions displayed in the UI
+VITE_RECENT_BLOCK_LIMIT=50
+
+# URL for CoinGecko API or custom proxy
+VITE_COINGECKO_URL=https://api.coingecko.com
+
+# GITHUB_API_URL default
+VITE_GITHUB_API_URL=https://api.github.com/repos/cosmos/chain-registry/contents
+
+# PINGPUB_API_URL default
+VITE_PINGPUB_API_URL=https://registry.ping.pub
+
+# IBC use PINGPUB_API_URL by Default (false) or GITHUB_API_URL (true)
+VITE_IBC_USE_GITHUB_API=false