bytelines

> I fail to see the added benefit of slapping a blockchain/web3/NFT/whatever on top, but maybe I'm just ignorant.

Mainly being able to run this as a service and having assurance that the data you put onto it is correct, like a digital notary. And to provide assurances like no double spend and transaction ordering. A way to verify that something happened and not rely on an intermediary to decide that or to have custody of that data.

So for example Amazon could easily implement this, and do it at scale. Would you trust Amazon? To both keep custody of your data, ensure that it will always be available, that it would not be meddled with? Would an enterprise like Wal-Mart trust that?

That's essentially TCB's problem. Wal-Mart doesn't necessarily trust the TCB, either, even though it is industry non-profit. So TCB uses Hedera as its data layer - it does not own the data.

And how can Wal-Mart trust Hedera, ultimately? The governing council

I, as a supplier, want to prevent coupon fraud - a ~300M year problem. Today they mitigate this with trust relationships between retailers and distributers, which consequentially means that coupons are less widely distributed and more marginal in what discounts they offer than they could be.

When coupons are redeemed, a cashier stuffs them in a bag, they get counted and redeemed and the supplier cuts a check. A shady retailer can simply say they have double the coupons they actually received, and they will get the same check. There's nothing unique about the coupon to prevent this.

Ignoring web3, how could you solve this? You could set up some simple database and rest api and have the coupons have some unique identity. You'd need to make this cryptographically secure so you couldn't simply forge identities, you'd need to be able to issue these easily and in bulk, have them expire at a certain time, onboard retailers to easily redeem these coupons and then facilitate payments to the retailer.

And, well, that's essentially what Hedera does[1], as a cryptographic DLT. Its value is that the cryptographic proof of whether something is unique and how it can be redeemed is done via NFT, and this protects against a number of attacks at the "consensus level". It offers you a secure way to do this and not run any computer, for minimal and predictable fees. Every transaction is fixed to USD and costs 0.0001 USD and completes in 5 seconds.