GRANDPA

GHOST-based Recursive ANcestor Deriving Prefix Agreement

GRANDPA (GHOST-based Recursive ANcestor Deriving Prefix Agreement), also previously known as SHAFT (SHared Ancestry Finality Tool), and originally known as AfG, is a finality gadget for blockchains, implemented in Rust. 
​GRANDPA Block Finality in Polkadot: An Introduction (Part 1)​
Used in 
Polkadot is a blockchain for scalable decentralized computation and interoperability.
Whitepaper
The formal specification is published at https://github.com/w3f/consensus/blob/master/pdf/grandpa.pdf​
Resources
The first implementation is underway in Rust at https://github.com/paritytech/finality-afg​

Chain-based Hybrid models

Proof of authority (PoA)

Last modified 3yr ago