ELIB: DAG vs PoS Blockchain

ELIB, Explain Like I’m Boss, is a collection of executive summaries for Web 3 technologies and projects.

Glossary

• DAG: Directed Acyclic Graph
• PoS: Proof-of-Stake
• TX: Transaction

This ELIB lists the unique advantages of features seen in DAG and PoS Blockchain structures:

DAG

Individual TX Based

• Faster Finality

Leaderless TX Proposing

• Fairer Sequencing
• More Censorship Resistant (in proposal stage)

Full Set Validator Voting (commonly seen but not tied)

• More Censorship Resistant (in confirmation stage)
• More Liveness Attack Resistant (in terms of DDoS and Bribed Collusion)

PoS Blockchain

Batched TX Based

• Less Overhead
• More reliable Transaction Interoperability

Determined Sub Set Validator Voting (commonly seen but not tied)

• Higher Cap on Total Validator Count
• More Liveness Attack Resistant (in terms of Invalid Proposal/Vote Spam)

Note that mirrored disadvantages and mutual features/advantages across DAG and PoS Blockchain are intentionally omitted for conciseness.

For further discussions: https://twitter.com/globallager/status/1478640152062803971

Credit to the works of (in alphabetical order) Eric Wall, Hans Moog, John Adler, Linus Naumann and Vitalik Buterin for inspiring this piece.