[Let’s take a crack at understanding distributed “consensus”](https://medium.com/@preethikasireddy/lets-take-a-crack-at-understanding-distributed-consensus-dad23d0dc95)

## Delegated PoS

see [EOS](/nodes/24256)

## Hashgraph

[Hashgraph: A Whitepaper Review](https://medium.com/opentoken/hashgraph-a-whitepaper-review-f7dfe2b24647) Febr, 2018
A critical peer review

[An Interview: Blockchain Rival That Invented Own Decentralization](https://cryptonews.com/exclusives/an-interview-blockchain-rival-that-invented-own-decentraliza-1756.htm) the project is looking to become commercial

## IOTA

[IOTA Doesn’t Scale](https://medium.com/@kaykurokawa/iota-doesnt-scale-fff54f56e975) feb 10, 2018

- there was a story of cryptography hacking problem by some academics

## Formal BFT

There seems to be a disconnect between formal BFT and practical BFT (for instance, Vitalik)

- a couple of papers attached

## Reviews

- [SoK: Consensus in the Age of Blockchains](https://knowen-production.s3.amazonaws.com/uploads/attachment/file/1644/SoK%2B-%2BConsensus%2Bin%2Bthe%2BAge%2Bof%2BBlockchains.pdf)

## PoW

[The State of Cryptocurrency Mining](https://blog.sia.tech/the-state-of-cryptocurrency-mining-538004a37f9b) David Vorick - I am the lead developer of Sia, a blockchain based cloud storage platform.

> The biggest takeaway from all of this is that mining is for big players. The more money you spend, the more of an advantage you have, and there’s not an easy way to change that equation

## Snow flake to Avalanche-  A Novel Metastable Consensus Protocol Family 

- attached  [Cornell Professor Unveils 'Simple Yet Powerful' Consensus Protocols](https://www.coindesk.com/emin-gun-sirer-unveils-simple-yet-powerful-consensus-protocol/)
Inspired by gossip algorithms, this new family gains its safety through a deliberately metastable mechanism. Specifically, the system operates by repeatedly sampling the network at random, and steering the correct nodes towards the same outcome.