About "globally definite states" of blockchains
Posted by Simone a year ago(Updated a year ago)

While reading the Whitepaper, in 3.3 on page 11 about IOTA I came over this: "The efficiency is obtained by losing globally definite states, which makes desired features like Simple Payment Verication (SPV) for light clients and smart contracts quite challenging".

Apart from the sequence of the blocks, can someone elaborate about what "global states" are definite in a blockchain that allow for SPV or smart contracts?

Thank you

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