Cosmos

Ecosystem Overview

• Cosmos is a network of blockchains — not a single chain
• Cosmos Hub is the main chain — where ATOM lives
• IBC connects all Cosmos chains — Inter-Blockchain Communication
• Each chain is sovereign — own validators, own token, own governance
• Same wallet works across chains — different addresses per chain

ATOM Token

• Native token of Cosmos Hub — staking and governance
• Used to secure the Hub — not other Cosmos chains
• Inflationary — staking rewards come from inflation
• Not used for gas on other chains — each chain has own token

IBC Transfers (Critical)

• Send tokens between Cosmos chains — native cross-chain
• Recipient address differs per chain — same seed, different address
• Channel/path matters — tokens take specific routes
• Tokens may be wrapped — ATOM on Osmosis is IBC ATOM
• Verify channel is active — some channels deprecated

Address Format

• Bech32 format — human-readable prefix + data
• cosmos1... for Cosmos Hub — other chains have different prefixes
• osmo1... for Osmosis, juno1... for Juno — each chain unique
• Same mnemonic gives different addresses — per chain derivation
• Verify prefix matches destination chain — wrong prefix = wrong chain

Staking

• Delegate to validators — earn staking rewards
• 21-day unbonding period — funds locked during unstake
• Slashing risk — validators can lose stake for misbehavior
• Redelegation instant — switch validators without unbonding
• Liquid staking available — stATOM, qATOM maintain liquidity

Validators

• Choose carefully — commission and uptime vary
• Voting power concentration — avoid top validators for decentralization
• Validator can vote on your behalf — unless you vote yourself
• Check slashing history — past behavior indicates reliability
• Community validators vs exchanges — support decentralization

Governance

• On-chain proposals — deposit, voting period, execution
• Vote with staked ATOM — voting power = stake
• Options: Yes, No, NoWithVeto, Abstain — veto can kill proposal
• Validator votes if you don't — delegate your vote
• Active participation encouraged — proposals affect chain direction

Wallets

• Keplr — most popular, browser extension + mobile
• Leap — alternative to Keplr, similar features
• Cosmostation — mobile and web
• Ledger support — via Keplr or native app
• One seed for all Cosmos chains — Keplr manages addresses

Gas and Fees

• Fees paid in native token — ATOM on Hub, OSMO on Osmosis
• Relatively low fees — fractions of a cent typically
• Gas estimation usually automatic — wallets handle it
• Can fail if gas too low — retry with higher gas

DeFi on Cosmos

• Osmosis — largest Cosmos DEX, AMM pools
• Stride — liquid staking protocol
• Mars Protocol — lending on Osmosis
• Astroport — DEX on multiple chains
• Kava — lending, originally separate, now IBC connected

Common Issues

• "Account not found" — address exists but has no transactions yet
• IBC transfer stuck — usually relayer delay, wait or try different path
• "Sequence mismatch" — transaction sent twice, wait for first to confirm
• Unbonding pending — 21 days is normal, not stuck
• Wrong chain address — cosmos1 address won't work on Osmosis

Airdrops

• Cosmos ecosystem has frequent airdrops — stakers rewarded
• Stake with non-exchange validators — exchanges don't qualify
• Check claiming requirements — some have expiration
• Popular for early supporters — OSMO, JUNO, STARS all airdropped

Security

• Same seed for all chains — secure it carefully
• Verify Keplr connections — phishing sites common
• IBC doesn't add security risk — but verify channels
• Ledger recommended for large amounts — works with Keplr
• Revoke unused permissions — wallet can audit connections