Astar Network Pioneers First Multi-Chain SuperchainERC20 Token with Chainlink CCIP Integration

Astar Network, Japan’s leading blockchain platform, has announced the implementation of the SuperchainERC20 standard for its native ASTR token, becoming the first project to create a fully interoperable ERC-7802 token that also leverages Chainlink’s Cross-Chain Interoperability Protocol (CCIP).

This groundbreaking development enables ASTR to move seamlessly between Astar’s Polkadot-based Layer 1, Sony’s Soneium blockchain, and eventually all Optimism-based Superchain networks such as Base, OP Mainnet, and World Chain. It also represents one of the first bridges between the Polkadot and Ethereum ecosystems, laying the groundwork for ASTR’s future as a multichain asset with broad utility across Web3.

The integration specifically addresses longstanding challenges in cross-chain token transfers by enabling direct burn/mint functionality between chains instead of relying on liquidity pools. Leveraging the standard removes the need for wrapped token versions across different networks, which has been a cause of numerous bridge security exploits in the past. It provides a unified, standardized implementation across all Superchain networks that requires zero infrastructure costs for added cross-chain functionality.

Chainlink’s CCIP enables this breakthrough by providing a secure cross-chain messaging protocol that verifies and executes token transfers between blockchains. When a user initiates an ASTR transfer, CCIP’s decentralized oracle network validates the transaction on the source chain and then relays this verified data to trigger the corresponding mint function on the destination chain. This architecture maintains security through Chainlink’s proven oracle infrastructure while eliminating the need for centralized bridges or liquidity pools.

“ASTR has become a true multi-chain asset by leveraging the SuperchainERC20 standard,” said Sota Watanabe, CEO of Startale Group. “This breakthrough implementation eliminates the fragmentation and poor user experience of traditional wrapped tokens, and allows native movement of ASTR between ecosystems instead of relying on liquidity pools or wrapping mechanisms.”

The ASTR token can now go cross-chain from Astar Network to Soneium using Chainlink CCIP via the Astar Portal with just one transaction. Once Optimism’s Superchain interoperability reaches production readiness, users will be able to transfer ASTR to any Superchain network with similar ease, requiring only two clicks to move tokens across the entire ecosystem in addition to any blockchain that is a part of the CCIP network.

The integration specifically addresses longstanding challenges in cross-chain token transfers by enabling direct burn/mint functionality between chains instead of relying on liquidity pools. Leveraging the standard removes the need for wrapped token versions across different networks, which has been a cause of numerous bridge security exploits in the past. It provides a unified, standardized implementation across all Superchain networks that requires zero infrastructure costs for added cross-chain functionality.

Chainlink CCIP enables this breakthrough by enabling the secure transfer of messages and value across both public and private blockchains. When a user initiates an ASTR token transfer from Astar Network to Soneium, CCIP validates the transaction on Astar Network and then relays this verified data through the protocol to lock the original asset from Astar Network and trigger a corresponding mint function to bring ASTR natively on Soneium. This architecture maintains security through Chainlink’s battle-tested oracle infrastructure, leveraging multiple Decentralized Oracle Networks to enable the secure transfer of the ASTR token.

“As Superchain interop rolls out, assets like ASTR will benefit from frictionless movement between chains, with 1-block finality, zero slippage, and a unified security model. This creates an ideal foundation for DeFi growth across Ethereum and the Superchain,” said Zain Bacchus, Staff Product Manager at OP Labs.

The implementation also serves as a reference for other blockchain projects looking to adopt true cross-chain interoperability. Developers across the Astar, Soneium, and broader Superchain ecosystems can now build multi-chain applications that leverage ASTR tokens without worrying about liquidity fragmentation or multi-step bridging mechanics.

“With around +650 million ASTR already on Soneium, this integration opens up serious value for both users and builders,” said Maarten Henskens, Head of Astar Foundation. “ASTR isn’t just the native token of Astar Network—it’s becoming a core asset across DeFi, gaming, and creative ecosystems. We’re building it as a true multi-chain utility token designed to power activity wherever innovation happens.”

Rather than creating wrapped tokens or fragmenting liquidity, ASTR implements a unified token model. The same ASTR token can exist natively on both Astar and Soneium through a burn-and-mint mechanism. When ASTR moves from Astar to Soneium, tokens are burned on the source chain and minted on the destination chain, maintaining a consistent total supply.

The implementation includes CrosschainMint and CrosschainBurn functions that allow authorized bridges to manage token supply across chains, role-based access control that ensures only Chainlink cross-chain contracts can mint or burn ASTR, and comprehensive auditing by Cyfrin that ensures the cross-chain functionality is secure.

The SuperchainERC20 implementation offers substantial advantages over traditional cross-chain bridges because users interact with the same token across all networks without wrapping. It solves the capital efficiency challenge because no capital is locked in bridge contracts or liquidity pools, and the token behaves identically across all supported chains.