Computer Science · Oct / Nov 2023 · Paper 12 · Question 12
0478
As printed in the paper
The question as text
Digital currency can be used to pay for products and services. Digital currencies are often tracked using digital ledgers.
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
12(a)[2]
Any two from:
Only exists electronicallyCan be a decentralised systemCan be a centralised systemUsually encrypted12(b)[1]
Blockchain
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