Sui

Object Model (Critical Difference)

Sui uses objects, not accounts — everything is an object with unique ID

Objects are owned or shared — owned objects enable parallel transactions

Coins are objects too — SUI balance is sum of coin objects you own

Object IDs are permanent — address doesn't change but objects move

Different from Ethereum's account model — requires different mental model

SUI Token

Native gas token — required for all transactions

Total supply fixed at creation — no inflation, but distribution ongoing

Gas fees burned — deflationary pressure

Staking rewards from fees — validators and delegators earn from gas

Transaction Characteristics

Sub-second finality — extremely fast confirmation

Parallel execution for owned objects — independent transactions don't wait

Gas is predictable — know exact cost before submitting

Transactions are atomic — all or nothing, no partial execution

Sponsored transactions possible — someone else pays gas

Address Format

Addresses start with "0x" — 64 hex characters

One address per wallet — but many objects owned

Not the same as Ethereum addresses — different derivation

Same seed gives different addresses than other chains

Wallet Options

Sui Wallet (official) — browser extension

Suiet, Ethos — alternative wallets with good UX

Ledger support coming — check current status

Mobile wallets available — Sui Wallet has mobile app

Staking

Delegate to validators — no minimum to stake

Epoch-based rewards — epochs are ~24 hours

Staking locks SUI — but liquid staking options exist

Choose validators carefully — commission rates vary

Rewards compound automatically — unless you withdraw

Gas and Fees

Gas denominated in MIST — 1 SUI = 10^9 MIST

Gas budget set per transaction — unused gas refunded

Storage fees separate — pay for object storage

Gas prices stable — reference gas price updated per epoch

Very cheap transactions — fractions of a cent

Move Language

Smart contracts written in Move — not Solidity

Object-centric programming — different from EVM

Strong safety guarantees — resources can't be copied or lost

Abilities system — controls what objects can do

Package upgrades possible — but original stays on chain

DeFi and NFTs

Cetus, Turbos for DEX — major decentralized exchanges

NFTs are objects — natural fit for Sui's model

Kiosk standard for NFT trading — built-in marketplace primitives

SuiFrens and other NFT collections — active NFT ecosystem

Dynamic NFTs easy — objects can change over time

Common Issues

"Insufficient gas" — need more SUI for transaction

Object not found — object was consumed or transferred

Transaction failed — check error message, often gas or permission

Coins fragmented — many small coin objects, merge them

Staking delayed — rewards start next epoch after staking

Coin Management

Coins are separate objects — can have many coin objects

Merge coins to simplify — combine into fewer objects

Split coins for exact amounts — needed for some dApps

Gas paid from one coin object — automatically selected

Wallet usually manages this — but understand the model

Cross-Chain

Wormhole bridge available — connect to other chains

Bridged assets are wrapped — not native on other chains

Bridge verification important — verify official bridge addresses

Native USDC coming — Circle deploying natively

Security

Seed phrase controls everything — standard 12/24 word recovery

Transaction preview shows effects — review before signing

dApp permissions matter — revoke unused connections

Objects can have transfer restrictions — check before assuming transferable

Verify package addresses — scam dApps exist