ETSI GR PDL 003 V1.1.1 (2020-12)

Permissioned Distributed Ledger (PDL); Application Scenarios

DGR/PDL-003_App_scenarios

General Information

• Status: Not Published
• Technical Committee: PDL - Permissioned Distributed Ledger
• Current Stage: 12 - Completion
• Due Date: 15-Jan-2021
• Completion Date: 18-Dec-2020

Standards Content (Sample)

ETSI GR PDL 003 V1.1.1 (2020-12)






GROUP REPORT
Permissioned Distributed Ledger (PDL);
Application Scenarios
Disclaimer
The present document has been produced and approved by the Permissioned Distributed Ledger ETSI Industry Specification
Group (ISG) and represents the views of those members who participated in this ISG.
It does not necessarily represent the views of the entire ETSI membership.

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2 ETSI GR PDL 003 V1.1.1 (2020-12)
Reference
DGR/PDL-003_App_scenarios
Keywords
ledger, use case
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3 ETSI GR PDL 003 V1.1.1 (2020-12)
Contents
Intellectual Property Rights . 7
Foreword . 7
Modal verbs terminology . 7
1 Scope . 8
2 References . 8
2.1 Normative references . 8
2.2 Informative references . 8
3 Definition of terms, symbols and abbreviations . 9
3.1 Terms . 9
3.2 Symbols . 9
3.3 Abbreviations . 9
4 PDL Reference Framework . 10
4.1 Introduction . 10
4.2 Definition of PDL . 10
4.3 Abstract PDL Architecture . 11
4.4 PDL Platform Governance and Management . 12
4.5 Stakeholders . 13
4.6 PDL Platform Abstraction Layers . 14
5 The infrastructure Layer . 15
5.1 ICT Verticals . 15
5.2 The Connectivity Vertical . 16
5.2.1 Introduction to the Connectivity Vertical . 16
5.2.2 Accessibility . 16
5.2.3 Availability . 16
5.2.4 Integrity . 16
5.2.5 Confidentiality . 16
5.2.6 Quality . 16
5.3 The Compute Vertical . 17
5.3.1 Introduction to the Compute Vertical . 17
5.3.2 Jurisdiction . 17
5.3.3 Privacy and Confidentiality . 17
5.3.4 Availability . 17
5.3.5 Integrity and Security. 17
5.3.6 Compute Device Characteristics . 17
5.4 The Storage Vertical . 17
5.4.1 Introduction to the Storage Vertical . 17
5.4.2 Per node storage . 17
5.4.3 Off-Chain storage . 18
5.4.4 Jurisdiction . 18
5.4.5 Privacy and Confidentiality . 18
5.4.6 Availability . 18
5.4.7 Integrity and Security. 18
5.4.8 Storage Characteristics . 18
6 Horizontal Integration . 18
6.1 Definitions . 18
6.2 Similarities and differences between PDL and Legacy Databases/Ledgers . 19
6.2.1 Introduction to comparative discussion of PDLs and Legacy Databases/Ledgers . 19
6.2.2 Consensus Mechanisms . 19
6.2.3 Basic Blockchain Operation . 19
6.2.3.1 Discussion of basic Blockchain operations . 19
6.2.3.2 Capture data transactions . 19
6.2.3.3 Hashing the block . 19
6.2.3.4 Chaining blocks . 20
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6.2.3.5 Reading data from blocks . 20
6.2.4 Other Blockchain Operations . 20
6.2.4.1 Discussion of other Blockchain operations . 20
6.2.4.2 Smart Contracts . 20
6.2.4.3 Zero Knowledge Proof (ZKP) . 20
6.2.4.4 Forks . 20
6.2.4.4.1 Discussion of Forks . 20
6.2.4.4.2 Incidental Forks . 21
6.2.4.4.3 Intentional Forks . 21
6.2.4.4.4 Hard Forks . 21
6.2.4.4.5 Soft Forks . 21
6.2.5 Data storage and Privacy concerns . 21
6.2.5.1 Discussion of Privacy concerns . 21
6.2.5.2 Competition . 21
6.2.5.3 Geography . 21
6.2.5.4 GDPR . 21
6.2.5.5 Storage in the Cloud and On-Premise . 22
6.2.6 Data Interfaces . 22
6.2.6.1 Introduction to Data Interfaces . 22
6.2.6.2 Application to PDL . 22
6.2.6.3 PDL node to Storage . 22
6.2.6.4 Node to Node . 22
6.2.7 Data Operation and Management . 23
6.2.7.1 Introduction to Data Operation and Management . 23
6.2.7.2 Membership Management . 23
6.2.7.3 Governance . 23
6.2.8 Non-Permissioned/Permissionless Ledgers . 25
6.3 Platform Management . 25
6.3.1 Inter-Node Communications . 25
6.3.2 Node Management . 25
6.3.2.1 Node management consideratons . 25
6.3.2.2 Hardware resource management . 25
6.3.2.3 Software resource management . 26
6.3.2.4 Storage resource management . 26
6.3.2.5 Node-Level Governance management . 26
6.3.3 Network resource management . 27
6.3.3.1 Bandwidth Management . 27
6.3.3.2 Performance Management . 27
6.3.3.3 Governance . 27
6.3.3.4 Inter-Node Network Management . 27
6.3.3.5 Inter-Node Network Management . 27
6.3.4 Identity Management . 27
6.3.5 Inter-Ledger Management . 28
6.3.6 Inter-Layer Management . 29
6.4 General Considerations . 29
6.4.1 Security . 29
6.4.2 Economic Incentives . 30
6.4.3 Operational Incentives . 30
6.4.4 Disintermediation . 30
6.4.5 Identity Sovereignty . 30
7 Integration Layers and Applications . 31
7.1 Introduction to Integration . 31
7.2 Templates . 31
7.2.1 Template considerations . 31
7.2.2 Applications . 31
7.2.3 APIs . 31
7.2.4 Common Functions . 31
7.2.5 PDL Implementations . 31
7.2.6 Platform management and Governance . 32
7.2.7 Infrastructure . 32
7.2 PDL Middleware . 32
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7.2.1 PDL-Application abstraction . 32
7.2.2 Application-Application abstraction . 32
7.2.3 PDL-PDL abstraction . 33
7.3 Platform APIs . 33
7.4 Service and Ecosystem APIs . 34
7.5 PDL-based Retail Applications . 34
7.6 PDL-based Wholesale Applications . 34
7.7 Interactions between PDL-based Wholesale and Retail applications . 35
8 Permissioned Distributed Ledger Governance . 35
8.1 The need for Governance . 35
8.2 Governance Methods and Structure . 36
8.3 Governing the Governance . 36
History . 38


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List of Figures
Figure 1: Abstract PDL Reference Framework .11
Figure 2: Simplified Functional PDL Reference Framework .12
Figure 3: PDL Reference Framework .15
Figure 4: The Infrastructure Layer .16
Figure 5: Architecture of Standards Governance .24
Figure 6: Inter-Ledger Management .28


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7 ETSI GR PDL 003 V1.1.1 (2020-12)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
Foreword
This Group Report (GR) has been produced by ETSI Industry Specification Group (ISG) Permissioned Distributed
Ledger (PDL).
Modal verbs terminology
In the present document "should", "should not", "may", "need not", "will", "will not", "can" and "cannot" are to be
interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

ETSI

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8 ETSI GR PDL 003 V1.1.1 (2020-12)
1 Scope
The present document describes Permissioned Distributed Ledger Application Scenarios. The aim is to consider and
describe the potential application scenarios for the operation of PDLs, including provision models with special
emphasis on as-a-service paradigms, and PDL infrastructure governance aspects. The present document provides
definition of terms to be used in the scenarios and recommendations for future normative specifications.
2 References
2.1 Normative references
Normative references are not applicable in the present document.
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] ISO TC307: "Blockchain and distributed ledger technologies".
[i.2] ISO 22739: "Blockchain and distributed ledger technologies -- Vocabulary".
[i.3] Recommendation ITU-T SG13: "Future networks including cloud computing, mobile and next-
generation networks".
[i.4] ETSI GR PDL 001: "Permissioned Distributed Ledger (PDL); Landscape of Standards and
Technologies".
[i.5] ITU-T Technical Specification FG DLT D1.1: "Distributed ledger technology terms and
definitions", Definition number 6.22 "Fork".
[i.6] ITU-T Technical Specification FG DLT D1.1: "Distributed ledger technology terms and
definitions", Definition number 6.25 "Hard Fork".
[i.7] World Economic Forum (04/2020): "Inclusive Deployment of Blockchain for Supply Chains:
Part 6 - A Framework for Blockchain Interoperability".
NOTE: Available at https://www.weforum.org/whitepapers/inclusive-deployment-of-blockchain-for-supply-
chains-part-6-a-framework-for-blockchain-interoperability.
[i.8] Jennifer J.Xu.:"Are blockchains immune to all malicious attacks?".
NOTE: Available at https://jfin-swufe.springeropen.com/track/pdf/10.1186/s40854-016-0046-5.
[i.9] Aljosha Judmayer, Nicholas Stifter, Alexei Zamyatin, Itay Tsabary, Ittay Eyal, Peter Gaži, Sarah
Meiklejohn, Edgar Weippl: "Pay-To-Win: Cheap, Crowdfundable, Cross-chain Incentive
Manipulation Attacks on Cryptocurrencies".
NOTE: Available at https://eprint.iacr.org/2019/775.pdf.
[i.10] ETSI GR PDL 004: "PDL: Smart Contracts Permissioned Distributed Ledgers System
Architecture and Functional Specification".
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[i.11] ETSI GR PDL 006: "Permissioned Distributed Ledger (PDL); Inter-Ledger Interoperability".
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
API Gateway: API management tool that sits between a client and a collection of backend services and acts as a
reverse proxy to accept all Application Programming Interface (API) calls, aggregate the various services required to
fulfil them, and return the appropriate result
®
NOTE: See Red Hat at https://www.redhat.com/.
chain: collection of PDL records concatenated to each other through a unique format and a specific order that may vary
depending on PDL type
common functionalities: such functionalities that offer similar or same behaviour across multiple applications
core functionalities: such functionalities t
...