6 ms·
You don't need a blockchain for that, see how old credit cards worked without network access.
by mosdl 1y ago
You don't need a blockchain for that, see how old credit cards worked without network access.
- throw219080123 1y agoI didn't say you need a blockchain. I just said a cryptographic protocol (mostly offline and unrelated to blockchain) would help to automatically and quickly detect and proof fraud. The offline credit card system does not proof fraud but just has insurance.