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DeFi Tokens Insight

What Are Wrapped Tokens?

Wrapped tokens let an asset from one blockchain be used on another. Here is how they work — and the risk to understand.

Editorial desk · · 2 min read
Aurora-style editorial cover illustrating: What Are Wrapped Tokens?
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Not financial advice. This article is for informational purposes only. Cryptocurrency is volatile and high-risk — do your own research.

Key takeaways
  • Wrapped tokens let an asset from one blockchain be used on another (e.g. WBTC on Ethereum).
  • Each wrapped token is meant to be backed 1:1 by the real asset held in reserve.
  • They unlock liquidity — using Bitcoin inside Ethereum DeFi, for example.
  • The catch is trust: if the custodian or bridge fails, the peg and backing can break.

Blockchains are, by default, separate worlds: Bitcoin lives on Bitcoin, and Ethereum apps can’t use it directly. Wrapped tokens are the bridge that lets an asset from one chain be used on another — most famously Wrapped Bitcoin (WBTC), which is Bitcoin usable inside Ethereum’s DeFi ecosystem.

How wrapping works

A wrapped token is designed to represent another asset one-for-one. To create WBTC, real Bitcoin is deposited with a custodian or protocol, which then issues an equivalent amount of the wrapped token on the target chain. To redeem it, you return the wrapped token and get the underlying Bitcoin back. In theory, every wrapped token is fully backed by the real asset held in reserve.

Why they exist

Wrapping unlocks liquidity. It lets Bitcoin holders lend, trade or provide liquidity in Ethereum-based DeFi without selling their Bitcoin, and it lets applications on one chain tap assets that live on another. It is a core piece of plumbing behind cross-chain finance.

The risk to understand

Wrapped tokens introduce a trust assumption: you are relying on whoever holds the underlying asset to actually hold it, one-for-one, and to honour redemptions. If that custodian or bridge is compromised — and bridges have been the target of some of crypto’s largest hacks — the wrapped token can lose its backing and its peg. Convenience comes with counterparty and smart-contract risk.

Explore the DeFi tokens we track on our DeFi hub. Not financial advice.