RWCTF 3rd Billboard Writeup
Overview Billboard is a public chain CTF challenge built by using Cosmos SDK and Tendermint.
Note that there hasn’t been any kind of challenges like this before.
Cosmos This chapter is intended to provide a brief introduction to the underlying Cosmos SDK for those who are not familiar with it.
Cosmos Blockchain Loosely speaking, a blockchain is made up of many blocks chained together by some cryptographic methods. Each block contains plenty of transactions.