YD/T 4545-2023
Blockchain-based domain name registration data access protocol overall technical requirements (English Version)

Standard No.

YD/T 4545-2023

Language

Chinese, Available in English version

Release Date

2023

Published By

Professional Standard - Post and Telecommunication  CN  /  YD

Latest

YD/T 4545-2023

Introduction

Standard Background and Evolution Analysis

The traditional WHOIS protocol has defects such as non-standardized data structure and insufficient international support. This standard builds a new generation of domain name registration data access system by introducing the tamper-proof characteristics of blockchain and REST architecture. The technical evolution path is as follows:

Dimension	Traditional WHOIS	Blockchain RDAP
Data structure	Unstructured text	Standardized JSON format
Security mechanism	Unencrypted transmission	TLS+PKI certificate system
Data consistency	Centralized storage	Distributed ledger consensus

---

Core technology architecture

1. Two-layer blockchain design

Adopting Registry boot chain and Registrar boot chainSeparation architecture:

• Registry chain: manages the mapping relationship between top-level domains (TLDs) and service addresses, using the PBFT consensus algorithm
• Registrar chain: stores the service endpoints of ICANN-certified registrars and supports dynamic node election

2. Data access node

Key functional modules include:

Module	Function	Technical requirements
Presentation layer	Request routing	Support HTTP/HTTPS
Business layer	Access control	OAuth2.0 authentication
Data layer	On-chain query	Smart contract call

---

Security control system

Build five-dimensional protection based on YD/T 3747-2020:

1. Transmission security: mandatory TLS1.2+ encryption
2. Identity authentication: X.509 certificate + alliance identity
3. Data integrity: SHA-256 hash check
4. Access control: RBAC permission model
5. Anti-DDoS: node traffic monitoring

---

Implementation suggestions

1. Migration path

Implementation in stages:

• Phase one: Deploy blockchain boot service nodes
• Phase 2: Transform the existing WHOIS interface to RESTful
• Phase 3: Enable TLS two-way authentication

2. Performance optimization

Recommendations:

• Off-chain caching mechanism (TTL≤300s)
• Query result paging (≤100 items per page)
• Asynchronous log audit

YD/T 4545-2023 Referenced Document

• YD/T 3747-2020 Blockchain technology architecture security requirements

YD/T 4545-2023 history

• 2023 YD/T 4545-2023 Blockchain-based domain name registration data access protocol overall technical requirements

Topics on standards and specifications

Standard and Specification