“onchain”

Bro it’s a private database operated jointly by a few large companies that has “blockchain” in the name of the consortium.

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sounds more legit than Base

Earned my sats! FACTS!

Why don't they just have a database that you can verify against? I'm not sure what good a blockchain is.

Hype marketing. They could just serialize it and track sales in a publicly available database. And that's probably all their 'blockchain' is anyway.

And even this could probably be bypassed

True

Even simpler, they could just sign the CoA with their private key.

I think any of it could be bypassed. You can copy a paper CoA.

Some embedded RFID thing that's signed would probably be harder.

NFC I mean. I'm in work mode 😂

Why not just put this piece of paper in the box and do nothing else?

Ask them.

it’s obnoxiously overpriced goods with or without the blockchain fluff. the blockchain fluff is just another buzzword attempt at justifying the price.

promoting “investment handbags” were some of the more unique hyperfinancialization examples of the last couple years.

https://www.cnbc.com/amp/2025/03/22/are-designer-handbags-an-actual-investment-heres-how-returns-stack-up.html

Sure but it’s the same people who buy Prada bags sooo…

I'm all for dunking on Prada, but that's probably not a bad use case for one of those PoA chains. There are multiple competing luxury brands on it I'm guessing, they trust each other to a degree, but the volume, legal stuff and whatnot mean you need a single source of truth and immutability after approval. So blockchain probably beats the headache of trying to manage everyone's access in some multi-tenancy cloud database environment.

The way those secure NFC tags (the ones inside the bag) are resistant to cloning is also kinda neat.

But yeah, in spirit it's obviously a multi-tenancy private database, that goes without saying.

Or you can just use PKI or a database

Almost all of these systems that I have worked with either fall into symmetric or PKI.

For symmetric, this would be products like the NTAG 424 DNA, they are pretty cheap at <$0.3/tag, how they work is they encrypt a challenge value with a key. Then the client sends this to a server which also has the key and it tells you “this is legit”.

Of course with some anti-replay and key diversification

On PKI systems, these cost $1/tag, you issue a certificate to the chip. Then it can sign challenge messages. The benefit is that you can put other logic as well and validate these online, alongside stronger protection.

But PKI is usually extremely application-specific.

If there are "Prada Blockchain" people,

There must be "Blockchain, not Prada" people.