What is 0x Protocol?

0x Protocol supplies open-source infrastructure that lets users exchange Ethereum-based digital assets directly from their own wallets, removing intermediaries and custodial risk. Running on the Ethereum blockchain, the framework gives developers the tools to build decentralized exchanges (DEXs), NFT marketplaces, and other DeFi applications while keeping every component open source and permissionless.

How it works: off-chain speed, on-chain security

0x combines off-chain order relay with on-chain settlement:

Order creation – A trader defines the tokens to swap, the exchange rate, and conditions such as expiration.
Cryptographic signing – The order receives a digital signature that proves authenticity without exposing private keys.
Off-chain matching – Relayers broadcast the signed order and match counterparties without ever touching user funds.
On-chain settlement – After a match, a smart contract verifies balances, signatures, and conditions, then finalizes the swap in a single atomic transaction.
Direct wallet transfer – Tokens move straight from one wallet to another, eliminating counterparty risk.
Relayer fees – Relayers earn ETH or other tokens for each successful match.

What makes 0x stand out?

Gas efficiency – Off-chain order books defer gas costs until settlement, unlike fully on-chain exchanges that charge fees at every step.
Flexibility and modularity – Developers can tailor the protocol to DEXs, NFT marketplaces, or institutional trading desks.
Interoperability – Support extends to all Ethereum token standards, including ERC-20 and ERC-721.
Liquidity aggregation – Relayers draw liquidity from multiple sources, reducing slippage and improving prices.

The role of ZRX

ZRX, the native token, underpins protocol governance and staking. Holders vote on upgrades and stake tokens within the governance system, aligning user incentives with the long-term health of the network.

About the Author

Jan Strandberg is the Founder and CEO of Acquire.Fi. He brings over a decade of experience scaling high-growth ventures in fintech and crypto.

Before founding Acquire.Fi, Jan was Co-Founder of YIELD App and the Head of Marketing at Paxful, where he played a central role in the business’s growth and profitability. Jan's strategic vision and sharp instinct for what drives sustainable growth in emerging markets have defined his career and turned early-stage platforms into category leaders.

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DISCLAIMER: Acquire.Fi is a listing and advertising platform for businesses and secondaries and does not certify or verify the information provided to the platform by the business owners. Acquisition Solutions Inc. (Acquire.Fi) does not hold itself out as providing any legal, financial or other advice. Acquire.Fi also does not make any recommendation or endorsement as to any investment, advisor or other service or product or to any material submitted by third parties to Acquire.Fi. Acquire.Fi is not a licensed crypto asset service provider and does not provide regulated financial services. The following list is compiled from Acquire.Fi partners.