Web 4.0 and virtual worlds

This standard establishes a practical, technical baseline of specific methodologies and tools for the development, implementation, and use of effective fail-safe mechanisms in autonomous and semi-autonomous systems. The standard includes (but is not limited to): clear procedures for measuring, testing, and certifying a system's ability to fail safely on a scale from weak to strong, and instructions for improvement in the case of unsatisfactory performance. The standard serves as the basis for developers, as well as users and regulators, to design fail-safe mechanisms in a robust, transparent, and accountable manner.

Blockchain-based digital assets exist in a specific system in the form of digitization. Considering the diversity of blockchain systems and applications, as well as the diversity of digital assets in these systems and applications, digital assets based on blockchain systems have typical characteristics such as intangibility, encryption verification mechanism, use of distributed ledgers, decentralization, consensus algorithms, etc. For better classification and management, this standard provides a unified classification method for blockchain digital assets for reference. This standard proposes the principles and methods for the classification of blockchain-based digital assets. This standard follows the principles of scientificity, systematicness and scalability, and proposes an attribute-based classification method for blockchain digital assets, whose classification attributes include technical attributes, economic attributes and legal attributes.

The technical architecture and details of three cross-chain approaches is described in this standard, including Centralized/Multi-signature Notary-based cross-chain technology, HTLC-based cross chain technology and Relay Chain-based cross-chain technology.

This standard defines a set of protocols that enable Blockchain networks to locate each other's trusted nodes through standardized names. The set of protocols define a naming scheme, an interface for name registration, and the data format that request and response messages use to resolve names.

This standard defines the types of occupations, competency requirements, and evaluation methods of blockchain and distributed ledger technology for service practitioners, including but not limited to competency elements, evaluated process, and employment grade. This standard applies to the ability evaluation and training of blockchain and distributed ledger technology service practitioners.

The standard establishes access control requirements for blockchain systems. The standard addresses the following access control attributes of the system, including but not limited to:a) Node permissions - the permissions of block generation, block synchronization, block verification and broadcasting, and sending transactions.b) Smart contract access permissions - interface access control, user access control, and hybrid access control.c) User permissions - registered user permissions and unregistered permissions. The concept of role is applied to differentiate the permissions of registered users, which means permissions vary according to the role of a user.d) Global permissions - user access to deploy smart contracts, and to read smart contracts.

This standard defines a decentralized identity and access management (IAM) framework for the Internet of Things (IoT) based on the emerging concepts such as decentralized identifiers (DIDs) and verifiable credentials (VCs). The framework addresses the integration of DIDs and VCs into the lifecycle of IoT devices as well as the decentralized IoT security services such as device authentication, data authorization and access control.

This standard provides a framework for the implementation, and interaction utilizing Web 3.0 (Web3) in healthcare and life sciences involving privacy challenges. Web 3.0 represents the next iteration of the evolution of the web and is built upon the core concepts of decentralization, openness, and greater user utility. Digital Ledger Technology (DLT) tokens, smart contracts, transactions, assets, networks, off-chain data storage and access architectural patterns, and Web3 permissioned and permission-less DLT are included in the framework.

This deliverable specifies quality measures for quantitatively measuring quality characteristics of sensor data, where these characteristics are specified by ISO 8000-210. The following are within the scope of this deliverable:(1) fundamental principles and assumptions for measuring the quality of sensor data; and(2) quality measures for sensor data, with respect to applicable quality characteristics and corresponding data anomalies.The following are outside the scope of this deliverable:(3) specific values for each measure, where the value indicates a distinction between, for example, good quality and poor quality; and(4) methods to improve the quality of sensor data.

ISO 14306:2017 defines the syntax and semantics of a file format for the 3D visualization and interrogation of lightweight geometry and product manufacturing information derived from CAD systems, using visualization software tools that do not need the full capability of a CAD system. ISO 14306:2017 has been adopted as a 3D visualization capability in addition to the ISO 10303 series. The file format supports the following information:(1) facet information (triangles), stored with geometry compression techniques(2) visual attributes such as lights, textures and materials(3) product manufacturing information, such as dimensions, tolerances and other attributes(4) boundary representation (b-rep) solid model shape representations. Several alternatives are available, including a representation based on the geometry standard defined in ISO 10303(5) configuration representations(6) delivery methods such as asynchronous streaming of content ISO 14306:2017 does not specify the implementation of, or definition of a run-time architecture for viewing or processing of the file format.

This document analyses visualization elements that are key components of the interface between the physical asset and the avatar (digital replica of the physical asset).

The present document collects information on glass-type AR/MR devices in the context of 5G radio and network services. The primary scope of this Technical Report is the documentation of the following aspects:- providing formal definitions for the functional structures of AR glasses, including their capabilities and constraints,- documenting core use cases for AR services over 5G and defining relevant processing functions and reference architectures,- identifying media exchange formats and profiles relevant to the core use cases,- identifying necessary content delivery transport protocols and capability exchange mechanisms, as well as suitable 5G system functionalities (including device, edge, and network) and required QoS (including radio access and core network technologies),- identifying key performance indicators and quality of experience factors,- identifying relevant radio and system parameters (required bitrates, latencies, loss rates, range, etc.) to support the identified AR use cases and the required QoE, and- providing a detailed overall power analysis for media AR related processing and communication.