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[-] untakenusername@sh.itjust.works 2 points 1 month ago

this honestly doesn't sound too bad (as long as the chips aren't toxic)

using blockchains to track the movement of goods, like from ports or for cheese, is probably their only non-BS use case other than volatile currencies

the reason a Blockchain would be preferable to a traditional database is bc its effectively impossible to change the records on it

[-] yesman@lemmy.world 3 points 1 month ago

It's ironic that the design of blockchain is to be impossible to edit as security against fraud. Because crypto is famous for all the fraud, And the block-chain's nature makes the fraud permanent and fixed.

At least one of the currencies had to fork because fraudulent transactions couldn't be undone.

[-] untakenusername@sh.itjust.works 2 points 1 month ago

impossible to edit as security against fraud.

Well security against monetary fraud, like faking coins or double spending. Especially double spending, at the time when bitcoin started pretty much all the other mathematical problems were figured out except that one.

[-] prole@lemmy.blahaj.zone -1 points 1 month ago

And the block-chain's nature makes the fraud permanent and fixed.

Not true

[-] untakenusername@sh.itjust.works 1 points 1 month ago

well it is unless the blockchain is forked without that transaction, which doesn't happen often at all so its mostly true with like two exceptions ever

[-] Maeve@kbin.earth 1 points 1 month ago

They're silicone so I don't know. They're "considered safe for food use" right now.

[-] NaibofTabr@infosec.pub 0 points 1 month ago

using blockchains to track the movement of goods, like from ports or for cheese, is probably their only non-BS use case other than volatile currencies

We already do this with barcodes and QR codes, which you can just make with a printer.

[-] usrtrv@sh.itjust.works 3 points 1 month ago

No? Barcodes and QR codes do not have enough information for unique identification. (Well they could but they start getting bigger and bigger)

But the real issue is needing these codes tracked and audited in a public manner. Instead of having a third party company trusted with all the cheese, you use a Blockchain with a public ledger. This doesn't even require much processing power since there's no incentive to mine as many blocks as possible.

I hate cryptobros but logistics is a good use for the tech. Tech is tech, not all use cases are bad.

[-] NaibofTabr@infosec.pub 1 points 1 month ago* (last edited 1 month ago)

Barcodes and QR codes do not have enough information for unique identification. (Well they could but they start getting bigger and bigger)

This is not really true. A 16-digit decimal code gives you 10 quadrillion unique numbers. FedEx handled ~3 billion packages in 2024, so at that rate it would take them more than 3 million years to use up the ID space. You don't need ridiculously long strings (e.g. blockchain tokens) for useful package ID codes.

If you stored the 16 digits as ASCII characters (7 bits each) it would be all of 112 bits of data. The Micro QR format is more than enough to represent that data, with room to spare for error correction. If you used alphanumeric instead of decimal you'd have 62^16 unique IDs (UC + LC + 0-9), still only 16 ASCII characters (112 bits), and at that point you're more worried about the sun burning out than you are about running out of package ID codes.

But the real issue is needing these codes tracked and audited in a public manner. Instead of having a third party company trusted with all the cheese, you use a Blockchain with a public ledger. This doesn't even require much processing power

If you want the tracking to be useful, then every time a package passes through a handling station the ID needs to be scanned and the ledger updated indicating the transfer of the package ID from one station to the other. Then every node on the blockchain network needs to update their copy of the ledger with the new transaction data. Never mind mining, if you're handling millions of packages per day then updating the ledger will create a stupid amount of network traffic and just eat processing power.

since there's no incentive to mine as many blocks as possible.

Without mining, what incentive would there be for anyone besides the actual shipping company to host a blockchain node for this? How would it not still be "a third party company trusted with all the cheese"?

Also, correcting any errors that get written into the ledger due to some handling failure will be extremely difficult if not impossible:

Once a transaction is sent and confirmed, it cannot be reversed.

this post was submitted on 10 May 2025
19 points (95.2% liked)

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