Cosmos (ATOM) is a cryptocurrency that powers an ecosystem of blockchains designed to scale and interoperate with each other. The team aims to "create an Internet of Blockchains, a network of blockchains able to communicate with each other in a decentralized way." Cosmos is a proof-of-stake chain.

native chain explorer:
Cosmos Explorer - Atomscan
Cardano on Coingecko
Cosmos on Coinmarketcap

social networks:

Cosmos network
Keplr Wallet
Osmosis Zone
Mintscan for Osmosis
Chihuahua - Useless meme coin on Cosmos
Chihuahua/Atom Staking on Osmosis
Chihuahua Monitoring

Guide - How to bridge LUNA to ATOM and backwards.