# EPF - Update 2

After more research on consensus mechanisms, I've finalised my area of work on SIngle Slot Finality. I got in contact with Lincoln who worked on this in the previous cohort.

I got more context on how consensus and finality is reached in different BFT algorithms. I have a basic understanding that to reach SSF we would need "either" Finality or a Fork choice rule to function at any given time. (currently in Ethereum Gasper, both Casper and GHOST work in parallel)

I researched on how the Tendermint algorithm works to understand how single slot finality is implemented in practice currently. Note that Tendermint doesn't function if 1/3rd of validators go offline.

The goal of SSF is to be "available" even if a supermajority of nodes are not active.

### Roadmap for Week 3

Lincoln asked me to get in contact with Francesco and Lucas who lead research on SSF at EF. I want to their research paper this week before reaching out to them.

Apart from that I also want to read the Master's thesis of Lincoln which describes the state of SSF research and a proposed roadmap to achieve it.

### References

- https://www.youtube.com/watch?v=nPgUKNPWXNI
- https://arxiv.org/pdf/1710.09437
- https://arxiv.org/pdf/2003.03052
- https://decentralizedthoughts.github.io/2019-06-23-what-is-the-difference-between/
- https://docs.tendermint.com/v0.34/introduction/what-is-tendermint.html