On September 5th, according to official reports, as the industry's leading one-stop Web3 portal, OKX Web3 Wallet has now upgraded the Wallet API function to help developers manage on-chain assets and transaction data faster, more fully and smartly. At present, OKX Web3 Wallet API can be applied for closed beta for free use, developers can enjoy high-quality on-chain services at zero cost, and empower Web3 application innovation and rapid iteration. Key features include: Multi-dimensional address query mode: supports single-address multi-chain, multi-address batch processing and structured aggregation query, providing a more flexible and efficient data query experience. 2) Real-time query of full on-chain data: Quickly obtain full token balance and currency price data, and intelligently filter garbage airdrop tokens to ensure accurate data. The on-chain data is updated in seconds, allowing you to keep abreast of asset dynamics at any time. 3) Transaction lifecycle management: Comprehensive support for transaction construction, broadcasting, tracking and query, from Gas Price, FeeRate query to EIP1559 support, including Pending pool Nonce query and pre-execution return GasLimit consumption, Webhooks push transaction status in real time. Transaction history can be traced back to Genesis block, and transaction records can also be filtered by token perspective. 4) Comprehensive coverage of multi-chain ecosystem: support for EVM chain, BTC and other UTXO blockchains, helping developers easily build multi-chain applications.