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DESMO-LD decentralized oracle for IoT

DESMO-LD decentralized oracle for IoT

Slides presented at the ONTOCHAIN Summit for Trustworthy Internet by Lorenzo Gigli, Software Architect at VAIMEE

ONTOCHAIN

June 02, 2022
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  1. CLICK TO EDIT
    MASTER TITLE STYLE
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    Location
    Date
    DESMO-LD
    A decentralized oracle
    solution for the Internet
    of Things
    Berlin
    02/06/2022

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  2. | ONTOCHAIN.NGI.EU
    2
    WHO WE ARE
    Innovative start-up focused on
    data interoperability and modular applications.
    We believe in the value of self-describing data,
    semantic technologies and the open source.
    Target domains include smart farming,
    industrial IoT, structural health monitoring,
    environmental monitoring.
    My name is Lorenzo Gigli.
    I'm a Software Architect at VAIMEE and a
    researcher for the University of Bologna.

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  3. | ONTOCHAIN.NGI.EU
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    BACKGROUND
    The Internet of Things is thriving, we are seeing the emergence of different
    dedicated solutions and protocols tailored to one or more application domains.
    This uncontrollable growth of software products and platforms has
    led to an interoperability problem.
    The World Wide Web Consortium (W3C), with its Working Group for the
    Web of Things is tackling the very same problem.
    The Web of Things standard does not define a new protocol/APIs, on the contrary,
    it choses a descriptive approach.

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  4. | ONTOCHAIN.NGI.EU
    BACKGROUND - WOT
    A Web Thing (WT) is the abstraction of a
    physical or virtual entity (e.g., a device or
    a room) and is described by standardized
    metadata: the Thing Description (TD).
    A Thing Description Directory (TDD) is a
    service that provide a search mechanism
    for collections of WoT Thing Descriptions
    that can be dynamically registered by
    Things or entities acting on their behalf.

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  5. | ONTOCHAIN.NGI.EU
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    DESMO-LD
    The DESMO-LD project aims to provide a fully integrated distributed solution for
    consuming IoT external data, enriched with Web of Things semantics and data
    model, inside the ONTOCHAIN.
    This addresses the call's objectives of designing new trustful decentralized Oracles
    to poll semantic data from off-chain decentralized data sources.

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    DESMO-LD - ARCHITECTURE

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    DESMO-LD – ARCHITECTURE – ON CHAIN
    ● Client
    It can be a smart contract, a DApp, etc.
    ● DESMO-LD Hub Contract
    A registry for TDDs that supports multiple “basic” operations
    such as registration, unregistration, retrieval, listing, ban, etc.
    It is also responsible for selecting the TDDs to participate in a
    new request and keeping track of their reputation over time.
    ● DESMO-LD Contract
    The entry-point of our system: exposes an
    API for retrieving data from devices and triggering actions.
    This contract also manages the distribution of the token
    among the various actors in the protocol.

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  8. | ONTOCHAIN.NGI.EU
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    DESMO-LD – ARCHITECTURE – OFF CHAIN
    ● Oracle DApp
    It’s an iExec decentralized application written in Node.js.
    It's in charge of parsing and translating the on-chain requests,
    collecting the results from the selected TDDs, retrieving and
    validating the WTs responses, and returning the result to the
    DESMO-LD Contract on-chain.
    ● WoT TDD
    The main search engine for IoT devices outside the chain.
    It stores the TDs of the registered WTs and provide a set of APIs
    for CRUD and search operations.
    Device owners or third parties may deploy their own TDDs and
    join the distributed network of Desmo-LD.
    ○ W3C compliant API *
    ○ Registering in the DESMO-LD Hub *
    ○ Support the DESMO-LD advanced geo-spatial API

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  9. | ONTOCHAIN.NGI.EU
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    DESMO-LD – DATA LIFECYCLE

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    DESMO-LD – TOKEN
    DESMO-LD will use an ERC-20 token to allocate resources in the network.
    ● TDDs (Earn)
    TDDs are our data/device provider in DESMO-LD network that stake tokens in order to provide join
    the system. TDDs earn query fees and rewards for their services. The registering tax is used for
    disincentivize poor decision making that could harm the integrity of the network.
    ● DESMO Pool (Earn)
    A portion of query fees contributed to the DESMO Pool. This pool will be used in the future to
    implement extra features and extra reward mechanisms for TDDs and other actors.
    ● DApp nodes (Earn)
    ● Clients (Pay)
    They pay query fees for the requests. Clients are likely to be developers or projects themselves that
    cover query fees for their applications.

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  11. | ONTOCHAIN.NGI.EU
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    DESMO-LD – USE CASE
    Next generation blockchain application will need to access and interact with IoT
    actors and data sources in time. DESMO-LD will satisfy these needs.
    ● Smart-grid energy sharing: Automatic energy sharing in local communities
    using IoT data.
    ● EVs distributed platform: building a fully decentralized electric vehicle sharing
    platform needs IoT oracles for accessing vehicle data and to unlock/lock them.
    ● Automatic insurances: Contracts can represent microinsurance when physical
    events or criteria are met.

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  12. | ONTOCHAIN.NGI.EU
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    DESMO-LD – PROJECT STATUS
    Today
    1. DApp deployed
    2. DESMO-LD Hub
    (deployed on Rinkeby)
    3. Mock up frontend
    4. Token economics
    (draft)
    July 2022
    DESMO-LD Contract
    Early September
    Thing Description Directory
    with advanced features
    September
    Final deployment
    August 2022
    Frontend application for
    DESMO-LD Hub Contract and
    DESMO-LD Contract
    June 2022
    Thing Description Directory
    W3C compliant

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  13. STAY UPDATED
    AND GET INVOLVED!
    www.linkedin.com/company/vaimee
    vaimee.com
    @MaVaimee
    www.f6s.com/vaimee
    Great things
    are built
    together!

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