Re:Walmart Is Getting Suppliers to Put Food on the Blockchain
by bildung on Thursday April 26, 2018 @04:08AM
(#16929903)
Scenario B: Walmart rents a $5 digital ocean VPS and installs postgres. Each producer generates a (e.g. GPG) key pair and sends the public key to Walmart. Each day, each producer creates a new entry in the db, signs it with his/her private key, and is done.
The mining is completely worthless in the scenario you described. Imagine either a rogue producer or Walmart having an interest in changing the database. In your scenario of 10 mining boxes the adversary would just have to buy 5 additional boxes and would have complete control over the blockchain.
Lets assume 10 suppliers each add 10 new 'produce transactions' on some day. It also occurs during work hours, so maybe between 9-5 there is 100 new transactions.
The miners are all known nodes, in fact, only 10 of them if we assume each supplier gets one.
Once the 100 transactions are minted into new blocks and the day ends...
What exactly are the miners supposed to mine into blocks? There are no transactions. Nothing to add.