Snapshot & State Sync

Snapshot

sudo add-apt-repository -y ppa:deadsnakes/ppa
sudo apt update
sudo apt install -y python3.12 python3.12-venv python3-pip aria2 lz4

sudo systemctl stop tacchaind
cp $HOME/.tacchaind/data/priv_validator_state.json $HOME/.tacchaind/priv_validator_state.json.backup
tacchaind tendermint unsafe-reset-all --home $HOME/.tacchaind --keep-addr-book
python3 -m venv gdown
source gdown/bin/activate
pip3 install gdown
gdown https://drive.google.com/uc?id=1f4vHS_cpliC8h_B_3I6Vfqr635MaD2c2 -O tacchain-snapshot.tar.lz4
deactivate
rm -rf gdown/
lz4 -dc tacchain-snapshot.tar.lz4 | tar -xf - -C $HOME/.tacchaind/data
mv $HOME/.tacchaind/priv_validator_state.json.backup $HOME/.tacchaind/data/priv_validator_state.json

Restart Service

sudo systemctl restart tacchaind && sudo journalctl -u tacchaind -f -o cat

State Sync

SNAP_RPC="https://tacchain-testnet-rpc.polkachu.com:443"

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)

sed -i.bak -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/.tacchaind/config/config.toml

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