Instructions on how to enable Lightchain Constantinople hard-fork.

If you are running a Lightchain Mainnet node, you must enable Constantinople hard-fork before block number 492834.


  1. Upgrade to Lightchain version: 1.4.0 Constantinople

  2. Open genesis.json located in Lightchain $DATADIR/database/genesis.json

  3. Add two more attributes "constantinopleBlock":492834,"petersburgBlock":492834 into the config section:

3. Restart the Lightchain node

4. Verify the hard-fork block numbers from lightchain run output: