QX Interoperability - v.0.7
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  • 👬Industry Initiatives
    • ISO Interoperability Framework
    • EEA Crosschain Interoperability Specification Suite
    • IEEE Standards for Blockchain Interoperability
    • ICMA Bond Data Taxonomy
    • IETF Secure Asset Transfer Protocol
    • SODA MIT Crosschain Interop WG
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  • 🏦Use Cases
    • Payments/Digital Asset Transactions
      • Enable transfers of digital payment tokens
      • Conduct Compliant Cross-VASP Digital Asset Transaction
      • Swap NFT for Tokenized Bank Deposits
      • Enable Intra-Group Payments with Tokenised Deposits
    • Wholesale CBDC (wCBDC)
      • Enable Settlement with Simultaneous Delivery versus Payment
      • Facilitate Cross-Border Payments with wCBDC
      • Enable FX transactions to facilitate cross-border payments
      • Settle Crypto Derivatives using wCBDC
      • Access Liquidity via wCBDC
      • Settle Interbank Payments with wCBDC
      • Settle Interbank Payments with wCBDC (Acquirer-Merchant Settlement)
      • Make Property Payments with Tokenized Deposits
      • Provide FX Liquidity using wCBDC
      • Enable Payment versus Payment (PvP)
      • Crosschain digital bonds trades
    • Decentralized Finance (DeFi)
      • Aggregate Yields across Blockchains for Corporate Treasuries
    • Retail CBDC (rCBDC)
      • Provide Targeted Government Transfers (Government Vouchers)
      • Streamline Home Equity Lending
      • Provide Corporate Vouchers and Rewards
      • Make Milestone-Based Property Purchase Payments
      • Enable Traceable and Targeted Donations
      • Consumer Prepayments to Corporations
      • Enable Asset Transactions
      • Enable Cross-Border Remittances
      • Government Payouts
      • Managing Learning Accounts
    • Private Markets/Asset Tokenization and Trading
      • Tokenize and Trade Private Equity Fund Shares
      • Distribute and Settle Private Corporate Debt Issuance
      • Trade Employee Stock Grants as Digital Securities
      • Enable Secondary Trading for Non-Listed Assets and Private Markets
      • Automated Discretionary Portfolio Management with Tokenized Assets
    • Trade & Commerce
      • Support Tokenized Electronic Bills of Lading for Global Trade
      • Commercial Vouchers
      • Online Commerce
      • Programmable Rewards
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  • 📓Requirements
    • Legal & Regulatory Layer
    • Governance and Policies Layer
      • Audit and Compliance sub-layer
      • Operations sub-layer
    • Application Layer
    • Integration and Middleware Layer
      • Oracle sub-layer
    • Semantic Layer
    • Syntactic Layer
    • Foundational Layer
      • Discovery sub-layer
      • Smart contract sub-layer
      • Function call sub-layer
      • Messaging sub-layer
      • Transaction sub-layer
      • Consensus sub-layer
      • Data transfer sub-layer
      • Security sub-layer
        • Identity and Authentication
        • Data Privacy
    • -
  • Protocol Providers
    • Chainlink
    • Axelar
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    • Comparison
  • Bridging Approaches
    • Bridges
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      • Hash Locking
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  1. Industry Initiatives

EEA Crosschain Interoperability Specification Suite

Industry Initiatives

PreviousISO Interoperability FrameworkNextIEEE Standards for Blockchain Interoperability

Last updated 1 year ago

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Overview

Initiative Name

EEA Crosschain Interoperability Specification Suite

Organization

Enterprise Ethereum Alliance (EEA)

Type

Standard

Description

The goal is to provide a set of specifications to enable crosschain interoperability between EVM-based networks and between EVM-based and non-EVM based blockchains.

Ecosystem

EVM-focused

Public Participants

Wanchain

Adhara

QualitaX

Datachain

Clearmatics

ConsenSys

Date Started

2020

Status

Draft - Under development

Link

https://entethalliance.github.io/crosschain-interoperability/ and

https://entethalliance.github.io/crosschain-interoperability/draft_crosschain_techspec.html

The EEA Crosschain Interoperability Specification Suite was initiated by ConsenSys and Wanchain in 2020. This suite consists of three technical specifications that address the requirements for interoperability between EVM-based networks and the integration between EVM-based and non-EVM-based blockchains, such as R3 Corda. The design revolves around a layered and modular protocol stack for cross-chain interoperability, encompassing the Application, Function Call, and Messaging layers. The approach is for Crosschain Applications to use Crosschain Function calls to allow business logic to be executed across blockchains. Components in the Crosschain Function Call layer rely on components in the Crosschain Messaging layer to deliver information from one blockchain to another such that the information can be trusted.

It is important to note that the specification suite is currently under development. However, in its current state, it provides implementable technical requirements and interfaces. It is already leveraged by some of the EEA members and some participants of the which focuses on crosschain interoperability in the banking sector. As such, it stands as a robust technical guide, detailing the interfaces and considerations for achieving interoperability within the enterprise EVM-based ecosystem.

Organizations aiming for best practices in enterprise Ethereum-based crosschain interoperability, especially those looking to bridge with non-EVM enterprise DTL/blockchains, should consider staying up to date and monitoring the evolution and updates of the EEA Crosschain Interoperability Specification Suite.

Analysis

Scope and Purpose

Target Audience

Developers, Researchers, Blockchain Architects, Product Managers

Coverage

Primarily EVM-based crosschain interoperabilty.

Technical Aspects

Architecture

Suggests a layered and modular architecture as a way for enterprises to create interoperable components for crosschain communication and execution.

Interoperability

Provides standardized interfaces.

Security Considerations

The specification suite comes with Crosschain Security Guidelines and Crosschain Decentralization Guidelines documents.

Adoption and Implementation

Vendor-agnostic Reference implementation

None

Current Adopters/Vendor Implementations

Case Studies

  • PvP - cash transfers between two Ethereum ledgers

  • DvP - between Corda and Ethereum

Ease of Implementation

Detailed technical interfaces are provided, but the ease of implementation would depend on the specific use case and developers' expertise.

Governance and Update Mechanism

Oversight Body

Enterprise Ethereum Alliance - Crosschain Interoperability WG

Update Mechanism

Ongoing specification development and bi-weekly meetings involving EEA members and invited experts.

Strengths and Weaknesses

Advantages

Provides a standardized detailed approach and mechanism for crosschain messaging and crosschain function calls.

Challenges

While it aims for wider adoption, its primary focus remains on EVM-based systems and their interoperability.

Compatibility and Integration

Inter-standard Compatibility

Extensibility

The modular architecture proposed ensures adaptability to future technological advancements.

Community and Support

Community Engagement

There are currently no active community engagement efforts.

The EEA has a broad community of experts and stakeholders. However, direct involvement is limited to EEA members. Feedback and reviews from non-members are welcomed and encouraged.

Support Channels

For EEA members: GitHub Issues, Github PRs, and Slack are the preferred channels for discussions.

For Non-members: james.harsh@entethalliance.org.

Future Roadmap

Next Step

Finalize the Messaging Layer and Function Call Layer specifications, ready for publication as official EEA standards.

Long-term Vision

Establish a globally recognized set of standards for enterprise EVM-based networks and between EVM-based and non-EVM based blockchains.

Comparative Analysis

Comparative Analysis

The EEA specification suite is primarily designed to address the needs for technical standardization of crosschain interoperability for enterprises. Stands out due to ongoing effort and its potential impact considering the number of enterprise EVM-based implementations/solutions.

Reviewer

We have contacted or we will contact the proposed reviewer.

Proposed reviewer: Dr Weijia Zhang, Wanchain

Review status: Not started.

(as part of a project working with and R3). Possible anticipated adoption by Enterprise Ethereum solution providers when officially published as an official EEA open standard.

The specification suite intends to align with EIP-3220: Crosschain Identifier Specification, ERC-5164: Cross-Chain Execution and the

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