genesisTimestamp is hardcoded to a wrong date

[dfstio]

  // copied from mina/genesis_ledgers/berkeley.json
  // TODO fetch from graphql instead of hardcoding
  const genesisTimestampString = '2023-02-23T20:00:01Z';
  const genesisTimestamp = UInt64.from(
    Date.parse(genesisTimestampString.slice(0, -1) + '+00:00')
  );

https://github.com/o1-labs/o1js/blob/main/src/lib/mina.ts#L742

[dfstio]

https://github.com/MinaProtocol/mina/blob/develop/genesis_ledgers/berkeley.json:

"genesis": {
    "genesis_state_timestamp": "2023-10-17T16:01:01Z"
  },

[mitschabaude]

Thanks 🙏🏻