🚀 Restore Celestia Node from Posthuman TESTNET Snapshots

This guide explains how to restore your Celestia node using a snapshot from Posthuman.

🛑 Step 1: Stop Celestia Node

Before restoring, stop the Celestia process to prevent database corruption:

sudo systemctl stop celestia-appd

📌 Step 2: Backup Validator State (IMPORTANT)

To avoid double signing issues, backup your validator state file:

cp $HOME/.celestia-app/data/priv_validator_state.json $HOME/.celestia-app/priv_validator_state.json.backup

🗑 Step 3: Remove Old Blockchain Data

Delete the old data to free space and prevent conflicts:

rm -rf $HOME/.celestia-app/data

📥 Step 4: Download & Extract the Latest Posthuman Snapshot

Note: Since Posthuman updates snapshots every 48 hours, use the latest one:

curl -L https://snapshots.celestia-testnet.posthuman.digital/data_latest.lz4 | lz4 -dc - | tar -xf - -C $HOME/.celestia-app

📂 Step 5: Restore Validator State

Move back the backup validator state file:

mv $HOME/.celestia-app/priv_validator_state.json.backup $HOME/.celestia-app/data/priv_validator_state.json

▶️ Step 6: Restart Celestia Node & Monitor Logs

Now, restart the service and monitor its logs:

sudo systemctl restart celestia-appd
sudo journalctl -u celestia-appd -fo cat

✅ Done!

Your node should now sync from the restored Posthuman snapshot. 🚀