What Is a Wrapped Token?
A wrapped token is a stand-in: a token on one chain or standard representing an asset locked somewhere else. Wrapped Bitcoin (WBTC) lets BTC value move through Ethereum DeFi; wrapped ETH (WETH) is ETH itself in the token-standard wrapper contracts require. The word "wrapped" always deserves the same follow-up: locked where, by whom, redeemable how?
How It Actually Works
- Custodial wraps (WBTC): real BTC sits with a custodian consortium; merchants mint and burn WBTC against it. The wrap is exactly as good as that custody and its transparency: reserves are publicly auditable on-chain, and the trust question never fully leaves.
- Contract wraps (WETH): a simple immutable contract holds ETH one-for-one, no custodian, no discretion. Wrapping and unwrapping is a permissionless function call; this is the benign end of the spectrum.
- Bridge wraps: assets minted by bridges against deposits on another chain, the riskiest family: when a bridge is exploited, its wrapped tokens become receipts for a robbed vault, the exact failure covered in the bridge entry.
Risks and Common Mistakes
- Treating all wraps as equal. WETH risk is a contract; WBTC risk is a custodian; bridge-wrap risk is whatever secures the bridge. Same word, different bets.
- Holding size in obscure wraps for yield: the extra points price the backing risk, per the who-is-paying rule.
- Depeg surprise: wraps trade on markets and can gap below the underlying during stress or doubt, the LST lesson in another costume.
- Tax note: wrapping may or may not be a disposal depending on facts; conservative filers treat asset-for-asset wraps as swaps. The property rules live in my tax guide.
When It Matters
Any DeFi position touching BTC on non-Bitcoin chains, any bridged asset, and any pool quoting WETH: know which wrap you hold and what stands behind it.
Related Terms
Glossary · Learn · Resource Library · Return to Official Home Page
Copyright © 2026 Crypto Guidance Inc.