with POW, the total system cost of a blockchain tx are astronomically higher than putting a record into 2+ DBs
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Additionally, sometimes even setting up the business relationship with the intermediary is either impossible or way too costly
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Here, the focus is one car and you want proof of monotonically increasing readings from that car. It's not even the right structure
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How so? If over a 10 year car history, I get 20 entries that increase monotonically, thatโs sufficient?
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you and I know people who drive 40k+ in a year, and sometimes 5k+ in two weeks. What if I reset by 500k once week?
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Fair enough, canโt comment on whether that example is relevant, but sure, you need to record with the right granularity
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if we're trying to prevent cheating we'll have to account for a hack that keeps setting the odometer back frequently in small steps
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thus you'll probably have to track each change at the counter resolution of the odometer, i.e. each km.
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My guess is the use case is to have a track record spanning multiple owners, only very few of which cheat.
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But only if cars are serviced there. So one idea could be to set up a globally trusted intermediary โฆ or use a blockchain :)
Mar 18, 2017 ยท 10:14 AM UTC