What Are the Alternatives to a Block Chain?

The big problem seems to be nobody can really tell where something came from, because it gets mixed up all over the place. And they're like, well, if we use a block chain with r f i d tags, then we will know that this mango came from this particular farm in new zealand. Ah, if that's what you want, then block chain is the wrong tack. What you can have are triple signed receipts. A triple signed receipt is is what it sounds like. It's three signatures. You have the signature of the person that's selling it, you have the signing of theperson that's receiving it, and you have the signatureof somebody that's auditing