Cross-chain is the ability of two or more independent blockchains to communicate and share data or value with each other. Now imagine if blockchains were independent islands. Each island has its own currency and rules. So you canโ€™t use Bitcoin on the Ethereum island because they don’t speak the same language. Here comes cross-chain technology, which acts as the bridge or ferry system connecting these islands.

Since you can’t literally send a coin from one chain to another, most cross-chain systems use a lock and mint mechanism. So when you send your original crypto, like Bitcoin, to a digital vault on its home blockchain, it is safely locked up. This means that the Bitcoin is held securely and cannot be used until it is released from the vault.

A bridge protocol then sees that your Bitcoin is locked and creates an identical “wrapped” version (e.g., Wrapped Bitcoin or WBTC) on a different blockchain, like Ethereum. When you want to go back, the wrapped version is destroyed, and your original Bitcoin is released from the vault.

Tools like Across, Stargate, and Wormhole are popular bridge services used to move funds between networks like Ethereum, Solana, and various Layer 2s. Then there are wrapped tokens like WBTC, which allow you to use the value of your Bitcoin inside Ethereumโ€™s financial apps. And finally there are interoperability networks like Cosmos and Polkadot that are built specifically to be “Blockchains of Blockchains,” where every sub-chain is cross-chain compatible by design.

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Related Terms

Rekt

Rekt is crypto slang for “wrecked.” Usually associated with financial losses, it describes a moment when your portfolio, gains, or entire stack collapses. It’s a go-to word when things go horribly wrong in the market. Youโ€™ll hear it when a coin dumps hard, when leverage blows up your position, or when you buy the top and watch everything evaporate. Think of it as the ultimate “game over” screen for your digital wallet. Itโ€™s not just about losing a few dollars;

Derivatives

Derivatives are financial contracts whose value is based on the price of an underlying asset. The cryptocurrency market derivatives are linked to digital assets which include Bitcoin and Ethereum instead of direct ownership of these assets. Traders use derivatives to access price changes because they do not buy or sell coins directly. The most common types of crypto derivatives are futures and options. Traders use futures contracts to make today price agreements which will determine their future asset buying and

Soulbound Token

A Soulbound Token SBT functions as an untransferable digital token which remains locked to its wallet after its initial distribution. A Soulbound Token establishes permanent ownership to a blockchain address which differs from the marketable nature of cryptocurrencies and traditional NFTs. The system exists to establish identity through its representation of credentials and reputation instead of financial value. The idea was introduced in 2022 by Ethereum co founder Vitalik Buterin along with researchers Glen Weyl and Puja Ohlhaver. They proposed