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