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Doppelganger detection (#2230)

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## Issue Addressed

Resolves #2069 

## Proposed Changes

- Adds a `--doppelganger-detection` flag
- Adds a `lighthouse/seen_validators` endpoint, which will make it so the lighthouse VC is not interopable with other client beacon nodes if the `--doppelganger-detection` flag is used, but hopefully this will become standardized. Relevant Eth2 API repo issue: https://github.com/ethereum/eth2.0-APIs/issues/64
- If the `--doppelganger-detection` flag is used, the VC will wait until the beacon node is synced, and then wait an additional 2 epochs. The reason for this is to make sure the beacon node is able to subscribe to the subnets our validators should be attesting on. I think an alternative would be to have the beacon node subscribe to all subnets for 2+ epochs on startup by default.

## Additional Info

I'd like to add tests and would appreciate feedback. 

TODO:  handle validators started via the API, potentially make this default behavior

Co-authored-by: realbigsean <seananderson33@gmail.com>
Co-authored-by: Michael Sproul <michael@sigmaprime.io>
Co-authored-by: Paul Hauner <paul@paulhauner.com>
This commit is contained in:
realbigsean
2021-07-31 03:50:52 +00:00
parent 834ee98bc2
commit c5786a8821
38 changed files with 2302 additions and 201 deletions
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2
scripts/local_testnet/README.md
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@@ -20,7 +20,7 @@ Start a local eth1 ganache server
./ganache_test_node.sh
```
Assuming you are happy with the configuration in `var.env`, deploy the deposit contract, make deposits,
Assuming you are happy with the configuration in `var.env`, deploy the deposit contract, make deposits,
create the testnet directory, genesis state and validator keys with:
```bash