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IoTeX is a blockchain-based platform, designed to become the decentralized backbone for Internet of Things applications.

With an ever-growing ecosystem of projects and products from DeFi to Tools to Gaming, IoTeX currently leads the world’s premier industry consortiums and standards bodies such as IEEE, IIC, and more. With numerous contributions to the Blockchain and IoT space, the IoTeX blockchain already powers real devices, including Ucam, an award-winning blockchain-powered cameras presented at the Consumer Electronics Show (CES) and the Pebble geo device. Pebble is a secure device designed by IoTeX and perfect for supply chain optimization in any industry. As a next step, IoTeX is launching “MachineFi” , to power next-gen IoT applications.

Quick facts

Property Value
IoTeX Mainnet chainId 4689
IoTeX Testnet chainId 4690
IoTeX Bridge
IoTeX Blockchain Explorer
Block time ~5 seconds

Supported endpoints


    • Get token balances for address. Return a list of all ERC20 and NFT token balances including ERC721 and ERC1155 along with their current spot prices.

    • Retrieve all transactions for address including their decoded log events. This endpoint does a deep-crawl of the blockchain to retrieve all kinds of transactions that references the address.

    • Get ERC20 token transfers for address alongwith historical token prices.

    • Return a paginated list of token holders contract_address as of any historical block height.

    • Return a paginated list of decoded log events emitted by a particular smart contract.

    • Return a paginated list of decoded log events with one or more topic hashes separated by a comma.

Go to Covalent’s API Reference

Last modified: January 20, 2022: Reverse order changelog navbar (d7df8a9)