IOTX Token Contracts

IOTX ERC20

Blockchain	Symbol	Contract Address
Ethereum	IOTX	0x6fb3e0a217407efff7ca062d46c26e5d60a14d69

IOTX ERC20 token is the original form of the IOTX token that was issued on the Ethereum blockchain during the initial development phase of the IoTeX blockchain protocol. Before the launch of the IoTeX blockchain in 2019, IOTX was primarily an Ethereum ERC20 token to facilitate early distribution and community engagement.

Read more: History of the ERC20 IOTX token

Migration to Native IOTX

With the official bootstrap of the IoTeX blockchain in 2019, the native IOTX token became available. Token holders of the ERC20 IOTX were encouraged to swap their tokens for the native IOTX to take full advantage of the newly launched blockchain’s features. The swap was facilitated through a service originally known as "tube," designed specifically for this transition.

Swap Mechanism

The swap from ERC20 IOTX to native IOTX was also supported by major centralized exchanges, including Binance and Gate.io, ensuring a broad and accessible platform for all token holders to migrate their assets seamlessly. While it was initially planned to phase out the "tube" service post-migration, considerations regarding user access and token utility led to the service remaining operational.

Evolution into ioTube

Over time, the tube service evolved into what is now known as the ioTube bridge. This evolution expanded the functionality from a simple one-way IOTX swap service to two-was swap, and then to a more comprehensive bridge service between various blockchains supporting any token.

Current Swap Process

Today, holders of the ERC20 IOTX can still swap their tokens to native IOTX using the following multi-step process through iotube:

1. Swap on Ethereum: Users first swap their ERC20 IOTX for CIOTX (CrossChain IOTX) on Ethereum using Uniswap. This step is necessary to convert the token into a format compatible with the iotube bridge.

2. Bridge to IoTeX: The CIOTX tokens are then sent through the iotube bridge to the IoTeX blockchain. Upon reaching IoTeX, CIOTX is converted into WIOTX (Wrapped IOTX), an ERC20-wrapped version of the native token on the IoTeX blockchain.

3. Unwrap to Native IOTX: Finally, users can unwrap their WIOTX to receive native IOTX tokens, completing the migration process using the wrapping service provided by iotube.

Wrapped IOTX (WIOTX)

Blockchain	Symbol	Contract Address
IoTeX	WIOTX	0xa00744882684c3e4747faefd68d283ea44099d03

WIOTX is an ERC20 token deployed on the IoTeX blockchain. Due to its exchangeability and representation on the IoTeX blockchain, WIOTX is commonly referred to as "Wrapped IOTX." It represents an ERC20-wrapped version of the native IOTX token, enabling it to interact with other ERC20-compatible services within the IoTeX ecosystem. This token typically originates from the bridging of CIOTX tokens from the Ethereum blockchain to the IoTeX blockchain. This process is facilitated through iotube.org, a cross-chain bridge.

WIOTX is designed to be directly exchangeable with the native IOTX token at a consistent 1:1 ratio. This exchange (also called "unwrapping") can be performed on the dedicated iotube service or the mimo Decentralized Exchange (DEX).

CrossChain IOTX (CIOTX)

Blockchain	Symbol	Contract Address
IoTeX	CIOTX	0x99B2B0eFb56E62E36960c20cD5ca8eC6ABD5557A
Polygon	CIOTX	0x300211Def2a644b036A9bdd3e58159bb2074d388
BSC	CIOTX	0x2aaF50869739e317AB80A57Bf87cAA35F5b60598
Ethereum	CIOTX	0x9F90B457Dea25eF802E38D470ddA7343691D8FE1

CIOTX, also known as "CrossChain IOTX," is an ERC20 token utilized within the iotube bridge ecosystem. It is designed to facilitate the bridging of the native IOTX token between the IoTeX blockchain and all other blockchains supported by iotube. This interoperability enables seamless IOTX token transfers across different blockchain networks. CIOTX maintains a consistent 1:1 swap ratio with both the native IOTX token and the Wrapped IOTX (WIOTX) token on the IoTeX blockchain, utilizing the dedicated service provided by iotube.