The European Central Bank has outlined three models for bringing central bank money on-chain to support settlement for tokenized securities, bank deposits, and stablecoins. The proposed frameworks include direct issuance, a bridging mechanism, and implementation through private intermediaries. These models aim to enable central bank money to function as a settlement asset on distributed ledger technology networks. The initiative seeks to integrate traditional monetary infrastructure with blockchain-based financial instruments to facilitate secure transaction settlement across digital asset markets.