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> Who's to stop anyone from producing a "Rolex" watch pointing to the exact same entry on the blockchain? No one. But only one is signed by Rolex's keys, and t

by 3np 5y ago

> Who's to stop anyone from producing a "Rolex" watch pointing to the exact same entry on the blockchain? No one. But only one is signed by Rolex's keys, and therefore considered legitimate. > Indeed. So how exactly does blockchain protect against counterfeit goods? It depends on who you are if it does or not. It can 1) prevent inconsistencies in different databases in different orgs, 2) prevent companies trying to hide their tracks or muddy the waters, 3) provide near-instantaneous settlement and coordination Let me ask you this; if you buy a Rolex watch on eBay that includes a QR code as proof of authenticity, how can you be confident that the same QR code has not been included with 100 other duplicate watches otherwise? (I had this happen with fake Bose headphones, BTW. A correct blockchain implementation would have allowed me to spot that within minutes of receiving the package as well as irrefutable proof to present to eBay/law enforcement, as opposed to months later when they failed and vague evidence)

dmitriid 5y ago
> But only one is signed by Rolex's keys How do you sign a physical watch with keys? > Let me ask you this; if you buy a Rolex watch on eBay that includes a QR code as proof of authenticity, how can you be confident that the same QR code has not been included with 100 other duplicate watches otherwise? I can't be confident. So, once again, how does blockchain help? > A correct blockchain implementation would have allowed me to spot that within minutes of receiving the package as well as irrefutable proof to present to eBay/law enforcement - What's a "correct blockchain" and who implements it? - How would it help if both watches/headphones/whatnot point to the same record in the ledger? - more in two comments to this: https://news.ycombinator.com/item?id=27435785 https://news.ycombinator.com/item?id=27435785
- 3np 5y ago
  > How would it help if both watches/headphones/whatnot point to the same record in the ledger? The watch has an ID/serial number. The record on the ledger is transferred to the new owner. If both new owners check the ledger, only one of them will have been assigned the watch with the corresponding SN. the payment could even be done atomically with the assignment of the (authentic) watch. As long as the buyer validates it, the only one who could forge watches would be Rolex.
  - dmitriid 5y ago
    > The record on the ledger is transferred to the new owner. This. How does this magical transfer happen? The moment you say "authorised resellers", please read comments to this: https://news.ycombinator.com/item?id=27435785 https://news.ycombinator.com/item?id=27435785 > the payment could even be done atomically with the assignment What's to stop an automatic payment with the assignment of the counterfeit watch? > As long as the buyer validates it, the only one who could forge watches would be Rolex. Why?
    - 3np 5y ago
      It sounds like you need to review some blockchain fundamentals. None of the above should be unclear in any way if you have a basic understanding. I could go on and try to address your questions, but really, at this point you may as well just be trolling. The way you have been strongly arguing above is not founded on reality if your last questions are honest.

by 3np 5y ago

dmitriid 5y ago

> But only one is signed by Rolex's keys How do you sign a physical watch with keys? > Let me ask you this; if you buy a Rolex watch on eBay that includes a QR code as proof of authenticity, how can you be confident that the same QR code has not been included with 100 other duplicate watches otherwise? I can't be confident. So, once again, how does blockchain help? > A correct blockchain implementation would have allowed me to spot that within minutes of receiving the package as well as irrefutable proof to present to eBay/law enforcement - What's a "correct blockchain" and who implements it? - How would it help if both watches/headphones/whatnot point to the same record in the ledger? - more in two comments to this: https://news.ycombinator.com/item?id=27435785 https://news.ycombinator.com/item?id=27435785

3np 5y ago
> How would it help if both watches/headphones/whatnot point to the same record in the ledger? The watch has an ID/serial number. The record on the ledger is transferred to the new owner. If both new owners check the ledger, only one of them will have been assigned the watch with the corresponding SN. the payment could even be done atomically with the assignment of the (authentic) watch. As long as the buyer validates it, the only one who could forge watches would be Rolex.
- dmitriid 5y ago
  > The record on the ledger is transferred to the new owner. This. How does this magical transfer happen? The moment you say "authorised resellers", please read comments to this: https://news.ycombinator.com/item?id=27435785 https://news.ycombinator.com/item?id=27435785 > the payment could even be done atomically with the assignment What's to stop an automatic payment with the assignment of the counterfeit watch? > As long as the buyer validates it, the only one who could forge watches would be Rolex. Why?
  - 3np 5y ago
    It sounds like you need to review some blockchain fundamentals. None of the above should be unclear in any way if you have a basic understanding. I could go on and try to address your questions, but really, at this point you may as well just be trolling. The way you have been strongly arguing above is not founded on reality if your last questions are honest.