# State Sync

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

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

2. **Add peers.**

```
PEER="1d73521c565b37a53038fc730bcd207a3db361b6@144.91.91.30:26656,524dd60331c56d198deabbb70238c2cc69119cca@161.97.122.216:36656,0c9ebd7b36f96d0279dbf6dc38572f5797c096c1@65.108.42.168:26656,320e4b81ab327dd2593a39de0d3ae718fdb9347c@176.9.168.220:26656,b8eeb6d99594c218c0373d8ec4c1e81031b92198@68.183.92.46:26656,387c32677c54dd4627366ffdf8e2dda68e71af69@54.193.168.147:26656,5e8eccab6b376be84eab7a017a112ca244e38ea2@5.9.121.55:41356"
sed -i.bak -e "s/^persistent_peers *=.*/persistent_peers = \"$PEER\"/" $HOME/.starsd/config/config.toml
```

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

```
RPC="https://stargaze-rpc.stakeangle.com:443"
RECENT_HEIGHT=$(curl -s $RPC/block | jq -r .result.block.header.height)
TRUST_HEIGHT=$((RECENT_HEIGHT - 2000))
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/.starsd/config/config.toml
```

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

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

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