Privacy-preserving and reward-based mechanisms of proof of engagement

TL;DR

This paper explores privacy-preserving and reward-based proof-of-engagement mechanisms, extending proof-of-attendance concepts to broader digital contexts using decentralized and centralized technologies.

Contribution

It introduces novel approaches for proof-of-engagement that balance privacy, transferability, and incentive integration, expanding beyond traditional proof-of-attendance methods.

Findings

Different solutions including DLTs and centralized systems are evaluated.

The mechanisms address privacy, scope, transferability, and incentives.

The study provides a comparative analysis of these approaches.

Abstract

Proof-of-Attendance (PoA) mechanisms are typically employed to demonstrate a specific user's participation in an event, whether virtual or in-person. The goal of this study is to extend such mechanisms to broader contexts where the user wishes to digitally demonstrate her involvement in a specific activity (Proof-of-Engagement, PoE). This work explores different solutions, including DLTs as well as established technologies based on centralized systems. The main aspects we consider include the level of privacy guaranteed to users, the scope of PoA/PoE (both temporal and spatial), the transferability of the proof, and the integration with incentive mechanisms.