BlockchainBeginner#DeFi#Trading
DEX (Decentralized Exchange)
D
Definition
An exchange design that uses blockchain transactions, smart contracts, or an onchain order book to match or execute trades. Custody, operator roles, access controls, fees, execution, and protections vary by protocol and jurisdiction.
Source reviewed
- Uniswap v2 Core whitepaper opens in a new tab
Supports: Explains automated market-maker pools, reserve-ratio pricing, routing, trading fees, and the protocol-specific nature of swap execution.
- EIP-20: Token Standard opens in a new tab
Supports: Defines ERC-20 transfer and approval behavior, including allowances that a spender may use.
Concept Diagram
Key Takeaways
1
DEX is a broad design label, not a guarantee of custody, privacy, access, or safety
2
AMMs and order books can have different contract, sequencing, and operator assumptions
3
Verify the chain, exact token and exchange contracts, allowance, route, and transaction data
4
A quote or early availability does not prove execution price, legitimacy, liquidity, or value
Practical Example
Before swapping from a wallet, a user verifies the official application domain, selected network, token and router addresses, requested allowance, minimum received, price impact, fee, and transaction simulation. The user does not treat a familiar DEX brand or a new token listing as verification of the contract or trade.
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Related Terms
Blockchain
AMM (Automated Market Maker)A smart-contract market design that quotes swaps from pool state and a specified pricing rule instead of matching a traditional order book. The formula, fees, liquidity range, oracle behavior, and risks are protocol and pool specific.
Blockchain
Hyperliquid L1A layer-1 blockchain whose documentation describes HyperCore spot and perpetual order books and HyperBFT consensus. Product availability, latency, fees, liquidity, and risk remain deployment- and market-specific.
Blockchain
CEX (Centralized Exchange)A platform managed by a central entity that facilitates the buying and selling of digital assets and may provide custody or conversion services.
Blockchain
Liquidity PoolAssets supplied to a smart-contract market-making system so swaps can execute against its rules instead of a traditional order book. The assets, fees, price curve, liquidity shares, withdrawal conditions, and risks depend on the specific pool and protocol.
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