Looks like w3c are #rejecting a #proposal for #unique #decentralized #id 's: https://lists.w3.org/Archives/Public/pub.. Apparently this is on the basis that it is not #energy #efficient due to the use of #blockchain - I somewhat have to agree. *Anything* that relies on blockchain will eventually grow to an #unsustainable #size , #computation or both. #proofofwork is simply not going to cut it.