And there are over 5 interoperable, independent and open source implementations of said specification:
- https://github.com/sigp/lighthouse/
- https://github.com/ChainSafe/lodestar
- https://github.com/status-im/nimbus-eth2
- https://github.com/prysmaticlabs/prysm
- https://github.com/ConsenSys/teku
- https://github.com/sifraitech/grandine
...