Noble Express supports CCTP blockchains: Arbitrum, Avalanche, Base, Ethereum, Noble, OP Mainnet and Polygon PoS. CCTP is Circle’s permissionless on-chain utility that facilitates USDC transfers securely between blockchains via native burning and minting. Noble Express also supports 40+ appchains leveraging the Cosmos ecosystem and the modular stack, including Osmosis, dYdX, Neutron, Kujira, Injective, Sei and Stargaze, among others. Over time, we expect to see hundreds of appchains and rollups added to Noble Express.

Noble Express does not charge fees. Noble Express incorporates Skip Go, a third party routing services provider, which incorporates an on-chain fee. This fee is displayed in the Noble Express user interface and is a function of transaction fees (i.e., gas fees) incurred when transferring across various blockchain networks. Note that where network transaction fees cannot be covered by USDC, the user is required to hold a fee paying token in their wallet (e.g., gas fees paid in ETH for transactions on Ethereum, Arbitrum, Optimism, etc.).

Noble is a blockchain purpose built for real-world assets (RWAs) use and interoperability. It is the native issuance platform for USDC in Cosmos and provides native USDC to the broader interchain and modular ecosystems. Noble is changing how stablecoins and other RWAs are issued on blockchains by combining minimalistic, high security architecture with the cross-chain efficiencies of protocols like IBC and CCTP.

Noble Express leverages Circle’s CCTP, a permissionless on-chain utility that facilitates USDC transfers securely between blockchains via native burning and minting, and the IBC protocol which allows for non-custodial bridging between enabled chains. Noble also leverages packet forward middleware to allow for multiple hops between Cosmos chains in one-click. Further, Noble has developed a proprietary forwarding module which allows users to go between Ethereum blockchains and Cosmos appchains in 1 click. For users, the goal is to simply connect your wallet(s), select your origin chain and destination chain and that’s it!

USDC only. Noble Express is currently focused on being the optimal front end for routing natively-issued USDC across the entire blockchain ecosystem.

Noble Express leverages Skip Go to help you find the most efficient routes for USDC across various blockchains in a non-custodial manner. If you are having trouble with a transaction, visit the Skip Discord and open a ticket in the #noble-express-support channel.