> For the complete documentation index, see [llms.txt](https://services.stakeangle.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://services.stakeangle.com/testnets/andromeda/state-sync.md).

# State Sync

{% hint style="info" %}
State Sync allows to sync a new node by fetching a snapshot of the network state at a recent height, instead of fetching and replaying all historical blocks.
{% endhint %}

{% hint style="info" %}
Some networks which use `wasm` may not yet support `wasm` folder transfers with State Sync. In this case you may need to download `wasm` folder separately.
{% endhint %}

{% hint style="info" %}
Depending on network, State Sync may need different amount of RAM to successfully fish sync process. It is recommended to have at least 8GB RAM.
{% endhint %}

1. **Stop existing service and reset database.**

```
sudo systemctl stop andromedad
andromedad tendermint unsafe-reset-all --home $HOME/.andromedad --keep-addr-book
```

2. **Add peers.**

```
PEERS="06d4ab2369406136c00a839efc30ea5df9acaf11@10.128.0.44:26656,43d667323445c8f4d450d5d5352f499fa04839a8@192.168.0.237:26656,29a9c5bfb54343d25c89d7119fade8b18201c503@192.168.101.79:26656,6006190d5a3a9686bbcce26abc79c7f3f868f43a@37.252.184.230:26656,50ce639d8889108b488f0aa802468bc13d4873a4@75.119.159.195:26656"
sed -i.bak -e "s/^persistent_peers *=.*/persistent_peers = \"$PEERS\"/" $HOME/.andromedad/config/config.toml
```

3. **Fill variables with data for State Sync.**

```
RPC="https://andromeda-rpc.stakeangle.com:443"
RECENT_HEIGHT=$(curl -s $RPC/block | jq -r .result.block.header.height)
TRUST_HEIGHT=$((RECENT_HEIGHT - 1000))
TRUST_HASH=$(curl -s "$RPC/block?height=$TRUST_HEIGHT" | jq -r .result.block_id.hash)

echo $RECENT_HEIGHT $TRUST_HEIGHT $TRUST_HASH
```

4. **Add variable values to config.toml.**

```
sed -i.bak -E "s|^(enable[[:space:]]+=[[:space:]]+).*$|\1true| ; \
s|^(rpc_servers[[:space:]]+=[[:space:]]+).*$|\1\"$RPC,$RPC\"| ; \
s|^(trust_height[[:space:]]+=[[:space:]]+).*$|\1$TRUST_HEIGHT| ; \
s|^(trust_hash[[:space:]]+=[[:space:]]+).*$|\1\"$TRUST_HASH\"|" $HOME/.andromedad/config/config.toml
```

5. **Start service and check journal.**

```
sudo systemctl restart andromedad
sudo journalctl -u andromedad -f -o cat
```

{% hint style="info" %}
State Sync typically takes up to 10 minutes. 
{% endhint %}