diff --git a/docs/rpc.md b/docs/rpc.md
index 63d80d5d..145681d3 100644
--- a/docs/rpc.md
+++ b/docs/rpc.md
@@ -1,5 +1,8 @@
-Cosmosia uses snapshots from:
-- [quicksync.io](https://quicksync.io/)
-- [alexvalidator.com](https://snapshots.alexvalidator.com/)
-- [staketab.com](https://cosmos-snap.staketab.com/)
-- [polkachu.com](https://polkachu.com/tendermint_snapshots)
\ No newline at end of file
+### RPC service
+
+There is a [RPC service](../rpc) for each chain. Each RPC service could has one or more instances, and load-balanced with [load-balancer](../load_balancer).
+
+Instance could be down or synching... at runtime. So there is a healthcheck cgi-script to let the load-balancer knowns if 
+its healthy to serve.
+
+
diff --git a/docs/snapshot.md b/docs/snapshot.md
index 1581adf2..8ee4e76e 100644
--- a/docs/snapshot.md
+++ b/docs/snapshot.md
@@ -15,5 +15,10 @@ snapshot_node = "cosmosia1"
 ```
 
 
-
+---
+Cosmosia also uses snapshots from other providers as 1st bootstrap snapshot or backup:
+- [quicksync.io](https://quicksync.io/)
+- [alexvalidator.com](https://snapshots.alexvalidator.com/)
+- [staketab.com](https://cosmos-snap.staketab.com/)
+- [polkachu.com](https://polkachu.com/tendermint_snapshots)