# Ropsten TTD override

Use the following command to override the `Terminal Total Difficulty (TTD)` in your client.

Note: the current value of `50000000000000000` will be changed on June 3, 2022 to a `TTD` expected to be hit around June 8, 2022.

# Geth

To override TTD in geth we should start the node with:
`--override.terminaltotaldifficulty 50000000000000000`.

# Nethermind
To override TTD in Nethermind we should start the node with:
`--Merge.TerminalTotalDifficulty 50000000000000000`

# Besu
For besu there are a couple of options:
* via toml config, add a config line:
`override-genesis-config=["terminalTotalDifficulty=50000000000000000"]`
* via cli parameter:
`--override-genesis-config="terminalTotalDifficulty=50000000000000000"`

# Erigon
Use `--override.terminaltotaldifficulty=50000000000000000`

# Lighthouse
Use `--terminal-total-difficulty-override=50000000000000000`

# Nimbus
Use `--terminal-total-difficulty-override=50000000000000000`

# Teku
Use `--Xnetwork-total-terminal-difficulty-override=50000000000000000` on the latest build

# Prysm
You need to update the `config.yaml` file with the new `TOTAL_TERMINAL_DIFFICULTY` in your configuration directory and restart your client

# Lodestar
You can use `--terminal-total-difficulty-override 50000000000000000` to override the TTD. For more information, see [this blog post](https://blog.chainsafe.io/lodestar-v0-37-0-bopsten-ready-release-231d185e3e1e).