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. 1.
    Upgrade to Lightchain version: 1.4.0 Constantinople
  2. 2.
    Open genesis.json located in Lightchain $DATADIR/database/genesis.json
  3. 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: