Bridges are both custodial (also referred to as centralized or trusted) or noncustodial (decentralized or trustless). The distinction explains who controls the tokens which are used to create the bridged property. All wrapped bitcoin (WBTC) is held in custody by BitGo, making it a centralized bridge. Conversely, bridged property on Wormhole are held by the protocol, which means it’s extra decentralized.
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