2025-08-30
By 2025, the cross-chain trading platform of HashKey Exchange in Hong Kong will process more than 500,000 cross-chain asset interactions per day through Web3 API, and the confirmation time of a single transaction will be shortened to 1.2 seconds, verifying the underlying support ability of Web3 API for decentralized ecology. As the core hub connecting users, smart contracts and blockchain, Web3 API breaks the centralization limitation of traditional APIs through standardized interface protocols, serverless architecture and encrypted communication mechanism, and promotes Web3 applications from concept to large-scale landing.
The Web3 API is built on the JSON-RPC protocol and defines core interfaces such as eth_blockNumber (querying block height) and eth_sendTransaction (sending transactions). Developers call these interfaces through HTTP or WebSocket to interact with blockchain nodes. For example, a certain DeFi protocol obtains the asset price of the Uniswap V3 liquidity pool in real time through the eth_call interface, and combines Chainlink oracle data to complete automated market making. After integrating the JSON-RPC interface into the compliance framework of HashKey Exchange, cross-chain transaction verification will be processed more than 3 million times in 2025, and data consistency will be improved by 99%.
Libraries such as Web3.js and Ethers.js encapsulate the underlying complexity and provide concise programming interfaces. Developers can query account balances through web3.eth.getBalance or use the ethers. Contract object to call smart contract methods. A certain NFT market implements batch minting of ERC-721 tokens through Ethers.js, and a single operation can generate 1000 NFTs, reducing gas costs by 70%. HashKey Exchange's DeFi aggregator integrates Ethers.js, and when users pledge LP tokens, the API automatically calculates profits and triggers smart contract distribution. The profit distribution will exceed 80 million Hong Kong dollars in 2025.
Web3 API achieves off-chain data on-chain through oracles such as Chainlink. A certain supply chain platform calls AWS IoT interface to obtain container temperature and humidity data through API, which is verified by Chainlink nodes and written into the blockchain to achieve full logistics process certification. The compliance framework of HashKey Exchange integrates such mechanisms. KYC files uploaded by users are automatically called for IPFS storage through API. By 2025, it has processed cross-border data verification more than 2 million times, reducing the risk of data leakage by 99%.
GraphQL allows clients to accurately request the required data, avoiding redundant transmission of traditional REST APIs. A certain DAO governance platform queries proposal voting results, token holder distribution, and other information through GraphQL, and can return Structured Data with a single request. The NFT market of HashKey Exchange integrates the GraphQL interface. When users filter blue-chip NFTs, the API can simultaneously return historical transaction data, holder addresses, and royalty income. By 2025, the query response time has been shortened from 2 seconds to 0.3 seconds.
The WalletConnect protocol achieves seamless connection between mobile end and web end through QR codes or deep links. Users sign and confirm transactions in their mobile wallets, and the web application obtains real-time results through APIs. After a certain DeFi lending platform connected to WalletConnect, the process of users pledging ETH to borrow USDC was simplified from 5 steps to 2 steps, and the conversion rate increased by 40%. The mobile end SDK of HashKey Exchange integrates this protocol, and by 2025, the proportion of mobile end transactions processed will reach 65%, and the average user operation time will be shortened to 30 seconds.
Cross-chain protocols such as Axelar and Across enable multi-chain asset interaction through APIs. A cross-chain DEX bridges BTC from the Bitcoin network to Ethereum through the Axelar API, allowing users to directly exchange BTC for ERC-20 tokens on Uniswap. The cross-chain gateway of HashKey Exchange integrates the Across API, processing over 100,000 cross-chain NFT transactions in 2025, increasing asset liquidity by 200% and reducing transaction fees by 40%.
A certain DeFi platform integrates the liquidity of protocols such as Uniswap and Curve through API, and automatically selects the optimal exchange path. When a user exchanges 1 ETH, the API calls the getAmountOut interface of each protocol to obtain a quote, and finally selects the path with the lowest slippage to execute the transaction. The DeFi aggregator of HashKey Exchange integrates such logic and processes transaction amounts exceeding $1 billion/day in 2025, reducing the average Gas fee by 50%.
A certain metaverse platform manages users' decentralized identities (DID) and virtual assets through APIs. When users create digital avatars, the API calls the ENS protocol to generate a unique domain name, and the virtual clothing NFT is minted through the ERC-1155 standard. The compliance framework of HashKey Exchange supports such operations. By 2025, it will process virtual asset rights confirmation more than 500,000 times, and the efficiency of cross-platform asset circulation will be improved by 10 times.
A real estate platform splits property rights into ERC-721 tokens through an API. Holders can vote on decoration plans and share rental income through smart contracts. The compliance framework of HashKey Exchange supports the blockchain of such assets. By 2025, more than 2 million real asset tokenization transactions will be processed, and the asset circulation cycle will be shortened from 30 days to 7 days.