The document discusses the construction of trust within digital environments, focusing on online purchasing and the role of institutional trust. It emphasizes the necessity of trust-related third parties and explores the implications of decentralized trust mechanisms, particularly blockchain technology. Conclusion highlights a shift from traditional trust architectures to innovative, distributed systems that redefine the foundations of trust and the institutions governing it.

1. Numérique & Confiance
Henri ISAAC, M&O, Dauphine Recherches en Management UMR CNRS 7088
PSL-Université Paris-Dauphine

2. Un univers de pure
confiance
Une construction collaborative de la confiance
Vers une infrastructure by design de la
confiance?
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3. © Henri ISAAC, 2017 3

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7. © Henri ISAAC, 2017 7
Achat en ligne selon le
niveau de confiance dans
l’Internet
Le baromètre du numérique 2016, CGE, ARCEP, Agence du Numérique

8. © Henri ISAAC, 2017 8

9. Un univers de
confiance pure
© Henri ISAAC, 2017 9

10. © Henri ISAAC, 2017 10

11. La nécessité de tiers de confiance
© Henri ISAAC, 2017 11

12. La marque,
élément central
de la confiance
en ligne?
© Henri ISAAC, 2017 12

13. L’importance de la confiance institutionnelle
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16. La production décentralisée de la confiance
© Henri ISAAC, 2017 16

17. Paradoxe de la confiance décentralisée
• Pas de confiance sur l’identité des
individus pris isolément
(anonymat)
• Confiance dans les
recommandations collaboratives
(algorithmes)
• Confiance dans l’agrégation d’avis
anonymes
• Enjeux sur la fiabilité des avis
(norme ISO, texte législatif)
© Henri ISAAC, 2017 17

18. Vers une infrastructure
de confiance
distribuée?
© Henri ISAAC, 2017 18

19. Typologie des structures de réseau
© Henri ISAAC, 2017 19

20. Principes
d’une
blockchain
© Henri ISAAC, 2017 20

21. Infrastructure Blockchain & confiance
• Un architecture technique qui par conception assure:
• Authentification forte & pseudonymat
• Cryptage des transactions
• Inviolabilité des transactions dans un registre distribué des
transactions (livre de comptes)
• DAO: Decentralized Autonomous Organization
© Henri ISAAC, 2017 21

22. Vers la disparition des coûts de
transaction?
© Henri ISAAC, 2017 22

23. Conclusion
• Mise en données du monde
• Mise en réseau du monde
• D’une architecture classique de la construction de la confiance
à
• … une nouvelle architecture distribuée et une ingénierie
renouvelée de la confiance
• Emergence d’une solution technique qui permet de repenser
les fondements de la confiance et les institutions qui la gère
(tiers de confiance)
© Henri ISAAC, 2017 23

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