Casper Proof of Stake compendium

Contents

• Casper FFG
• Casper CBC
  • Further reading
• Applications/Infrastructure using Casper

For an introduction to PoS, see PoS FAQs.

Casper FFG

Casper the Friendly Finality Gadget (FFG), AKA for short as Casper FFG, for PoS validation with Proof-of-Work (PoW). Resources include:

• sharding + casper (= shasper) spec
• EIP 1011 (deprecated)
• implementation doc; and
• a testnet
• repo

Casper CBC

Casper the Friendly GHOST: Correct by Construction (CBC), AKA Casper CBC; for full Proof-of-Stake (PoS). GHOST stands for Greediest Heaviest Observed Sub-Tree, and is a blockchain fork-choice rule protocol. PoS will be essential for the sustainability of Ethereum, drastically reducing its energy consumption while increasing scalability and performance. Resources include:

• See this repo.
• wiki

Further reading

• a comparison of FFG and CBC
• the https://ethresear.ch Casper category, e.g.:
  • CBC-Casper in the face of the new PoS+Sharding plans on Ethereum, includes a comparison of FFG and CBC with a link to a draft formal proof of FFG

Applications/Infrastructure using Casper

• Rocket Pool: allows pooling, in alpha as of August 2018. "Unlike traditional centralised proof-of-work (PoW) pools, Rocket Pool utilises the power of smart contracts to create a self-regulating decentralised network of smart nodes that allows users with any amount of ether to earn interest on their deposits and help secure the Ethereum network at the same time."