How Does Collateralization Differ between Centralized and Decentralized Stablecoins?
Centralized stablecoins are typically backed 1:1 by fiat currency (like USD) or short-term treasuries held in a bank account, with the issuer holding the reserves. Decentralized stablecoins are backed by crypto assets, often in an over-collateralized manner, managed by transparent smart contracts on a blockchain.
The key difference is the custody and transparency of the reserves: centralized is trust-based, decentralized is trustless and auditable on-chain.