Open Peer-to-Peer Systems over Blockchain and IPFS: an Agent - - PowerPoint PPT Presentation

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Open Peer-to-Peer Systems over Blockchain and IPFS: an Agent - - PowerPoint PPT Presentation

May 07, 2023 202 likes •528 views

Open Peer-to-Peer Systems over Blockchain and IPFS: an Agent Oriented Framework. Cryblock2018 Antonio Tenorio-Forns, Samer Hassan and Juan Pavn 0 Table of Contents 1. Introduction 2. System Requirements 3. Decentralization Technology

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Open Peer-to-Peer Systems over Blockchain and IPFS: an Agent Oriented

  • Framework. Cryblock2018

Antonio Tenorio-Fornés, Samer Hassan and Juan Pavón

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Table of Contents

  • 1. Introduction
  • 2. System Requirements
  • 3. Decentralization Technology
  • 4. Challenges of Decentralized open systems: Consistency and

Search

  • 5. Architecture
  • 6. Conclusions
  • 7. Thanks!
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1 Introduction

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1.1 Centralized, decentralized and P2P systems

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1.2 Open P2P systems with Blockchain and IPFS

Framework Open Systems Agents with partial information

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2 System Requirements

Open System Peer to peer Agents with partial information Communication through a query protocol

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2.1 Open system

External agents may join and leave Examples: The Web, Operating Systems Complex and heterogeneous systems

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2.2 Peer to Peer System

P2P systems do not depend on single nodes to function

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2.3 Agents with partial information

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2.4 Communication through a query protocol

Share information Query for information

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3 Decentralization Technology

Content Addressability Merkle Links and structures Blockchain IPFS

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3.1 Content Addressability

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3.2 Merkle Links and structures

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3.3 Blockchain

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3.4 IPFS

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4 Challenges of Decentralized open systems: Consistency and Search

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4.1 CAP Theorem

(Brewber 2012) Consistency Availability Partition resistance

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4.2 CALM Principle

(Alvaro et al 2011) True statements remain when adding information Order independence Formal analysis available

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4.3 Blockchain for distributed consistency

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4.4 Design guidelines

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4.4.1 Monotonic queries

Monotonic queries can be implemented without using Blockchain or other coordination technologies.

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4.4.2 Consistency requirements

Consistency requirements are a design decision. If inconsistent behaviour is acceptable for non-monotonic queries, coordination technologies such as Blockchain are not required.

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4.4.3 Strong consistency

The non-monotonic queries of the system with strong consistency requirements should be supported by a coordination technology such as Blockchain.

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5 Architecture

Tackling data access Tackling data trust Trustless distributed Data Discovery protocol

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5.1 Tackling data access

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5.2 Tackling data trust

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5.3 Trustless distributed Data Discovery protocol

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6 Conclusions

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6.1 Challenges

Privacy Sustainability Security (Sybil attacks, generation attacks…)

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6.2 Discussion and Conclusions

Framework for Open P2P systems Blockchain + IPFS Design guidelines (When to use blockchain) Distributed architecture Data access Data trust Data discovery (trustless query protocol)

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7 Thanks! Antonio Tenorio-Fornés

antoniotenorio@ucm.es atenor.io Universidad Complutense de Madrid P2P Models project: p2pmodels.eu