DigitalCash

Context: AltMoney

Before there was BlockChain / BitCoin : https://satoshispeaks.com/early-digital-cash-predecessors/

Maybe BlockChain isn't the answer : https://www.wired.com/story/digital-cash-ecash-act/amp

Though I'm not entirely convinced.

If you really want digital can without blockchain I'm thinking something more like a IOTA's Tangle (fragmented graph) might be your best hope