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I don't understand the supply chain use case. You can't trust the third party to enter "shipping container #123 has 10,000 bananas" into a centralized database,

I don't understand the supply chain use case. You can't trust the third party to enter "shipping container #123 has 10,000 bananas" into a centralized database, but you can trust them to enter "shipping container #123 has 10,000 bananas" into a blockchain? They can still lie about what they put into the blockchain, it isn't magic.

bluesign 6y ago
Imagine like you trust edges but not middleman.
madmax96 6y ago
It doesn't eliminate that. But it gathers evidence. Where did they acquire the 10,000 bananas? Multiple parties must collude -- and then that collusion is on record. I'm interested in if that data is useful to anyone? Also, why not trust a central entity with that data?
- HideousKojima 6y ago
  >Also, why not trust a central entity with that data? I.E. blockchain does nothing to solve this potential issue
rglullis 6y ago
Of course they can lie, but with blockchain it is much easier to detect the lie. If the banana producer has a receipt from the shipping company that says "10,000 bananas in the container for Jasper" and the shipping company only has 8,000 to put at your door, you can be sure it who was malicious. Without a blockchain, if the shipping company and banana producers were colluding to skim you of 2,000 bananas, it's much easier for them to do.
- HideousKojima 6y ago
  If the shipping company and producer are colluding, blockchain does nothing to stop that.
  - rglullis 6y ago
    No, but if the producer has a record saying they put 10 bananas and the shipping company only delivers 8, it will be undoubtedly on the shipping company to bear the costs of the difference.
    - Jasper_ 6y ago
      OK. But what if the producer said they put 10 bananas, but they lied and actually put 8? When it finally gets to the recipient, nobody knows whether the shipping company stole them or whether the producer lied. The blockchain did not help.
      - rglullis 6y ago
        Come on, it's not that hard... I mention about the producer saying they have a receipt indicating 10 bananas. Whoever produced that receipt signed a message saying "I got 10 bananas from the producer" is now on record responsible for it.
    - HideousKojima 6y ago
      So why wouldn't a central database work, with the producer entering how much they sent to the shipping company, and the shipping company entering how much they sent? What in the world does the use of blockchain enable in this case?
      - rglullis 6y ago
        Who controls the "central database"? What if the manager of the central database is colluding with the shipping company, or the producer? What if the manager of the central database wants to block one of the producers to favor another one? "What does the blockchain enable in this case?" To get rid of the central database and all the potential sources of conflict?

bluesign 6y ago

Imagine like you trust edges but not middleman.

madmax96 6y ago

It doesn't eliminate that. But it gathers evidence. Where did they acquire the 10,000 bananas? Multiple parties must collude -- and then that collusion is on record. I'm interested in if that data is useful to anyone? Also, why not trust a central entity with that data?

HideousKojima 6y ago
>Also, why not trust a central entity with that data? I.E. blockchain does nothing to solve this potential issue

rglullis 6y ago

Of course they can lie, but with blockchain it is much easier to detect the lie. If the banana producer has a receipt from the shipping company that says "10,000 bananas in the container for Jasper" and the shipping company only has 8,000 to put at your door, you can be sure it who was malicious. Without a blockchain, if the shipping company and banana producers were colluding to skim you of 2,000 bananas, it's much easier for them to do.

HideousKojima 6y ago
If the shipping company and producer are colluding, blockchain does nothing to stop that.
- rglullis 6y ago
  No, but if the producer has a record saying they put 10 bananas and the shipping company only delivers 8, it will be undoubtedly on the shipping company to bear the costs of the difference.
  - Jasper_ 6y ago
    OK. But what if the producer said they put 10 bananas, but they lied and actually put 8? When it finally gets to the recipient, nobody knows whether the shipping company stole them or whether the producer lied. The blockchain did not help.
    - rglullis 6y ago
      Come on, it's not that hard... I mention about the producer saying they have a receipt indicating 10 bananas. Whoever produced that receipt signed a message saying "I got 10 bananas from the producer" is now on record responsible for it.
  - HideousKojima 6y ago
    So why wouldn't a central database work, with the producer entering how much they sent to the shipping company, and the shipping company entering how much they sent? What in the world does the use of blockchain enable in this case?
    - rglullis 6y ago
      Who controls the "central database"? What if the manager of the central database is colluding with the shipping company, or the producer? What if the manager of the central database wants to block one of the producers to favor another one? "What does the blockchain enable in this case?" To get rid of the central database and all the potential sources of conflict?