ioTube

ioTube is a cross-chain bridge designed to be decentralized, multi-chain, and multi-asset. ioTube enables bi-directional exchange of tokens between IoTeX, Ethereum, Binance Smart Chain, and now Polygon! ioTube v5 is a major upgrade to our already sophisticated cross-chain bridge. ioTube utilizes multiple smart contracts on both the origin/destination blockchain to enable cross-blockchain token transfers. It starts when a user deposits assets into the Cashier contract on Chain A, which is an event that is observed by multiple Witness nodes. These witnesses verify this event and send a signature to the Relayer network, which aggregates all signatures and instructs the Validator contract on Chain B to mint the same amount of Proxy tokens that were deposited on Chain A.