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edi3 / edi3-igl

Inter-Goverment Ledger
GNU General Public License v3.0
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Document transfer #27

Open shujingliew opened 5 years ago

shujingliew commented 5 years ago

Indication of how ICL transfer document, e.g. the document is stored in the repository and API will provide the link for document access.

monkeypants commented 5 years ago

I have a suggestion.

  1. ICL messages make reference to a unique document ID (but we do not put the document itself onto a ledger)
  2. The country that sent the message provides access to the document via an API (e.g. GET /documents/{document_id})
  3. the fact there is a message referencing the document, sent from country A to country B is proof (to country A) that country B is entitled to access the document. So, any party who can authenticate as country B is granted access to that document.
  4. the document ID could be a cryptographic hash of the contents of the document. So, anyone who access the document is able to be certain that they have been given the correct, unadulterated copy of the document.

This way, the ledger contains pointers to documents, but those pointers are "cryptographic pegs" that effectively notarize the document.

onthebreeze commented 5 years ago

I've put more about this in the spec - see sequence story