0x Protocol Token (ZRX) is the native ERC-20 governance and utility token of 0x Protocol, a decentralized exchange (DEX) aggregation and swap-settlement infrastructure built on Ethereum (ERC-20).
0x provides an open-source, on-chain protocol that other wallets and applications use to source and route token swaps across multiple liquidity venues rather than operating as a standalone exchange itself. Its API and smart contracts are publicly auditable and integrated by third-party DeFi applications for swap functionality.
0x differentiates itself as DEX-aggregation infrastructure rather than a standalone exchange, letting third-party wallets and applications embed swap functionality through its API instead of building their own routing engines.
0x Labs' 2025 acquisition of DEX aggregator Flood.bid, its first-ever acquisition, strengthened this routing and aggregation engineering. ZRX holders govern the protocol's ongoing development and its treasury.
ZRX functions as both a governance and utility token within the 0x Protocol ecosystem, granting holders participation rights in protocol decision-making.
0x Protocol Token (ZRX) has a fixed total/maximum supply of 1,000,000,000 tokens, with circulating supply of approximately 848,396,562.9 ZRX (about 84.8% of total) as of 2026-09-02.
Total supply is fixed rather than subject to ongoing issuance, making net emission flat and non-inflationary.
0x Protocol Token (ZRX) launched through a public ICO that concluded on August 20, 2017, raising approximately $24 million.
The ICO sold 500,000,000 ZRX, half of total supply, at approximately $0.0480 per token. 0x Protocol was founded in 2016, with the ICO and on-chain contract deployment on August 11, 2017 following roughly a year later. Early backers included Pantera Capital, Blockchain Capital, Polychain Capital, and FBG Capital.
0x Protocol Token (ZRX) is deployed as an ERC-20 token on Ethereum, and 0x does not operate its own blockchain or validator set.
As an Ethereum-based token, ZRX issuance, transfers, and smart-contract execution settle according to Ethereum's proof-of-stake consensus mechanism. 0x functions as a protocol layer built on top of Ethereum rather than as an independent chain.
0x Protocol was founded in 2016 by Will Warren and Amir Bandeali, who also co-founded 0x Labs, the company building the protocol, and launched its ICO in August 2017.
As of May 14, 2026, Will Warren stepped out of the co-CEO role, leaving Amir Bandeali as sole CEO. Early investors included Pantera Capital, Blockchain Capital, Polychain Capital, and FBG Capital.
0x Labs, headquartered in San Francisco, California, develops and maintains the 0x Protocol today, operating under the official domains 0x.org and 0xprotocol.org.
Following a May 2026 leadership change, co-founder Amir Bandeali leads 0x Labs as sole CEO. In May 2025, 0x Labs made its first-ever acquisition, acquiring DEX aggregator Flood.bid to strengthen its in-house trade-routing and aggregation engineering.
0x Protocol Token (ZRX) holders govern the protocol through on-chain voting on 0x Improvement Proposals (ZEIPs), which decide protocol upgrades and expansion directions.
The protocol also maintains a community-governed on-chain treasury, the 0x DAO, originally seeded by 0x Labs with an initial allocation on the order of 2,000,000 ZRX. ZRX holders control how the DAO's holdings are allocated to fund projects benefiting the broader 0x ecosystem.
0x's 2026 roadmap has centered on multi-chain expansion of its Swap API and new trade-execution features.
Further expansion to Solana and Monad is planned, alongside a new stack component teased for August 2026.
0x Protocol's core contracts are open source and have been audited, including a ConsenSys Diligence audit of 0x Protocol v2 alongside published audits of the newer 0x Settler contracts.
0x maintains an active bug bounty program on Immunefi and has met Immunefi's "Standard Badge" best-practice requirements. Structural risk factors include thin on-chain liquidity relative to market capitalization and notable holder concentration, with the top 10 addresses controlling approximately 54% of supply among roughly 189,296 total holders as of 2026-09-02.