Two-tier blockchain timestamped notarization with incremental security

Alessio Meneghetti, Armanda Ottaviano Quintavalle, Massimiliano Sala, Alessandro Tomasi

Digital notarization is one of the most promising services offered by modern blockchain-based solutions. We present a digital notary design with incremental security and cost reduced with respect to current solutions. A client of the service receives evidence in three steps. In the first step, evidence is received almost immediately, but a lot of trust is required. In the second step, less trust is required, but evidence is received seconds later. Finally, in the third step evidence is received within minutes via a public blockchain.

Knowledge Graph

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