Create readme.md

UNION/readme.md

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+# UNION
+[RPC](http://union.srgts.xyz:21657) | [API](http://union.srgts.xyz:1337) | [STATESYNC](#title1) 
+
+### <a id="title1">State Sync</a>
+````
+seeds="[email protected]:27656,8a07752a234bb16471dbb577180de7805ba6b5d9@union.testnet.4.seed.poisonphang.com:26656"
+peers="[email protected]:21656"
+sed -i -e 's|^seeds *=.*|seeds = "'$seeds'"|; s|^persistent_peers *=.*|persistent_peers = "'$peers'"|' $HOME/.union/config/config.toml
+
+sudo systemctl stop uniond
+cp $HOME/.union/data/priv_validator_state.json $HOME/.union/priv_validator_state.json.backup
+uniond tendermint unsafe-reset-all --home $HOME/.union --keep-addr-book
+SNAP_RPC="http://union.srgts.xyz:21657"
+
+LATEST_HEIGHT=$(curl -s $SNAP_RPC/block | jq -r .result.block.header.height); \
+BLOCK_HEIGHT=$((LATEST_HEIGHT - 2000)); \
+TRUST_HASH=$(curl -s "$SNAP_RPC/block?height=$BLOCK_HEIGHT" | jq -r .result.block_id.hash)
+
+echo $LATEST_HEIGHT $BLOCK_HEIGHT $TRUST_HASH
+
+sed -i -E "s|^(enable[[:space:]]+=[[:space:]]+).*$|\1true| ; \
+s|^(rpc_servers[[:space:]]+=[[:space:]]+).*$|\1\"$SNAP_RPC,$SNAP_RPC\"| ; \
+s|^(trust_height[[:space:]]+=[[:space:]]+).*$|\1$BLOCK_HEIGHT| ; \
+s|^(trust_hash[[:space:]]+=[[:space:]]+).*$|\1\"$TRUST_HASH\"|" $HOME/.union/config/config.toml
+
+mv $HOME/.union/priv_validator_state.json.backup $HOME/.union/data/priv_validator_state.json
+sudo systemctl restart uniond && sudo journalctl -u uniond -f -o cat
+````