OKLink

OKLink is a multi-chain blockchain explorer and Web3 data platform operated by OKG Technology Holdings Limited, a company listed on the Hong Kong Stock Exchange under ticker 01499.HK. OKG was established in 2013 as one of the earliest blockchain companies in China and has since grown into a global blockchain services provider with offices across the United States, Europe, South Korea, Japan, and other regions. OKLink operates as OKG's dedicated blockchain data and information services arm and has grown into one of the most comprehensive on-chain data platforms in the industry.

Scale and Coverage

OKLink's defining characteristic is its breadth. The platform supports over 170 blockchain networks, ranging from major chains such as Bitcoin, Ethereum, Solana, BNB Chain, Polygon, Arbitrum, Optimism, and zkSync Era to emerging ecosystems including Aptos, Sui, Starknet, and numerous testnets. This unified coverage distinguishes OKLink from single-chain explorers and makes it a common starting point for researchers and institutions that need to track activity across multiple ecosystems simultaneously.

The platform manages over 1,000 terabytes of structured blockchain data and maintains a library of more than 3 billion labeled on-chain addresses. These labels attach identifiers to wallets associated with exchanges, MEV bots, smart contracts, hackers, crypto whales, known protocols, and other entities, forming the backbone of OKLink's analytics and compliance offerings.

Core Products

OKLink Explorer is the public-facing blockchain search and analytics interface. It provides real-time transaction tracking, address monitoring, token and NFT analytics, and rich contextual data across every supported chain. Explorer features include a CEX assets dashboard for visualizing centralized exchange holdings and fund flows, a gas price tracker for identifying optimal transaction timing, and a bytecode decompiler for inspecting and debugging unverified smart contracts. The explorer is designed to serve both casual users monitoring wallet activity and professional researchers conducting deeper on-chain investigation.

OpenAPI is OKLink's developer infrastructure layer. It provides programmatic access to multi-chain real-time data, on-chain transaction records, and address analysis across dozens of supported networks. The API aggregates data from OKLink's explorer suite, mainstream exchange Proof of Reserve data, ETH deflation metrics, stablecoin statistics, and BRC-20 token data. Developers can use OKLink's smart contract verification endpoints—supporting Solidity and Vyper contracts, with integrations for Hardhat, Foundry, and Truffle—at no query cost. The API is positioned as an alternative to running self-hosted nodes, removing the infrastructure burden for developers and institutions that need broad on-chain data access without managing synchronization and uptime themselves.

Onchain AML is OKLink's anti-money laundering and compliance platform, launched by OKG Tech in 2023. It is targeted at virtual asset service providers (VASPs), financial institutions, and DeFi protocols that need to screen transactions and addresses against regulatory requirements. The platform covers 100 or more blockchains and delivers a 3.4 billion address label library with response times under 100 milliseconds, enabling real-time risk alerting on on-chain activity.

The two core analytical products within Onchain AML are KYT (Know Your Transaction) and KYA (Know Your Address). KYT monitors deposit and withdrawal transactions, establishes connections between on-chain addresses and real-world entities, identifies malicious addresses, and generates compliance alerts. KYA categorizes and estimates risk types associated with specific on-chain addresses, supporting digital asset investigations and preliminary transaction screening. Address risk detection runs across five dimensions: direct exposure to blacklisted addresses, association with blacklisted addresses, suspicious transaction patterns, high-risk entity identification, and broader risk entity classification. The platform can be customized to match specific regulatory jurisdictions, compliance programs, or internal risk policies.

Chaintelligence extends OKLink's compliance capabilities into criminal investigation and law enforcement support. It is a forensic investigation and crime-prevention system built on the same underlying address graph and labeling infrastructure as Onchain AML, designed to trace illicit fund flows and support professional investigators.

Users and Positioning

OKLink's user base spans multiple segments. Crypto traders use the explorer and CEX dashboard to track market activity and monitor exchange fund flows. Developers and teams building Web3 applications use OpenAPI to integrate multi-chain data without running their own infrastructure. Institutional investors and researchers rely on the platform's historical data depth and labeling coverage for due diligence and market intelligence. Compliance teams at VASPs and financial institutions use Onchain AML and Chaintelligence to meet KYC/AML obligations across jurisdictions where virtual asset regulation is tightening.

The platform is positioned primarily for professional use. Its strength lies in data depth and multi-chain coverage rather than simplified user interfaces, making it best suited for users with existing familiarity with blockchain data structures.

Infrastructure and Partnerships

OKLink has formed partnerships with organizations across security, finance, and blockchain sectors, and its API data is accessible through third-party marketplaces including Huawei Cloud. iPeakoin partnered with OKLink in 2024 to bring on-chain AML capabilities to traditional industries in emerging markets, reflecting the platform's expanding reach beyond purely crypto-native use cases.

OKG Technology Holdings Limited, OKLink's parent company, provides services to over 50 million users across 180 or more countries and regions. Its Hong Kong Stock Exchange listing and multi-subsidiary structure—with OKLink as its primary data and analytics brand—positions the company as a publicly accountable and institutionally oriented actor in the blockchain infrastructure space.