Wormhole

Wormhole is a cross-chain messaging and bridging protocol that enables communication between more than 30 blockchain networks, including Ethereum, Solana, BNB Chain, Polygon, Avalanche, Arbitrum, Optimism, Sui, Aptos, and many more. Originally incubated by Jump Crypto, one of the most influential trading and infrastructure firms in the crypto industry, Wormhole has grown into one of the most widely used interoperability solutions in the blockchain ecosystem. The protocol facilitates the transfer of tokens, NFTs, and arbitrary data between chains, serving as critical infrastructure for the multi-chain future of Web3.

Wormhole operates through a network of 19 Guardian nodes — trusted entities that observe events on connected blockchains and attest to their validity. When a user initiates a cross-chain action (such as bridging tokens from Ethereum to Solana), the source chain contract locks or burns the assets, Guardians observe this event and sign a Verified Action Approval (VAA), and the destination chain uses this signed message to mint or release the corresponding assets. This Guardian-based architecture prioritizes speed and reliability over full decentralization, with plans to progressively decentralize the validator set over time.

The project gained notoriety in February 2022 when an exploit drained approximately 120,000 wETH (worth ~$320 million) from the Solana side of the Wormhole bridge — one of the largest hacks in DeFi history. Jump Crypto stepped in to cover the losses entirely, and the incident led to significant security improvements. By 2026, Wormhole has processed billions in cross-chain volume, powers numerous multi-chain applications through its messaging layer, and has expanded into cross-chain governance, queries, and native token transfers through its Connect and NTT (Native Token Transfers) products.