4.x

Read about the major cheqd network upgrade, moving to version 4.x

This upgrade moved cheqd to support Cosmos SDK v0.50 "Eden".

Cosmos SDK v0.50 is a long-term support version bringing major improvements in performance, developer experience, and modularity. Key features include ABCI++ for more flexible and efficient consensus and IAVL 1.0 for faster and more efficient data storage. It also adds Optimistic Execution to reduce block times and Sign Mode Textual for clearer, more secure transaction signing. This release sets a solid foundation for building faster, more customizable applications on cheqd.

We also enhanced our DIDs to support a more flexible service section, enabling direct connections to did:cheqd DIDs using DIDComm. This enhancement brings full cheqd support for DIDComm endpoint discovery, making it easier for apps and SDKs like ACA-Py and Credo to integrate seamless messaging and communication.

⚙️ ABCI++ Integration

Introduces programmable consensus by extending the Application Blockchain Interface (ABCI) with new lifecycle hooks.

Key Improvements

  • Application developers gain greater control over block processing and state transitions.

  • Enables custom consensus logic that can be tailored to specific application needs (e.g. advanced voting, inter-block dependencies).

  • Allows decoupling of consensus steps, improving both flexibility and performance.

⚡ Optimistic Execution

Introduces support for executing transactions before consensus is finalized.

Key Improvements

  • Reduces block time and latency by speculatively executing blocks.

  • Enhances the performance of high-throughput applications.

  • Improves UX for end-users by speeding up transaction confirmations without sacrificing safety.

🧩 IAVL 1.0 Merkle Trees

An upgrade to the core data structure used for state storage in the Cosmos SDK.

Key Improvements

  • Faster reads and writes from disk.

  • Significantly improved disk usage and storage efficiency.

  • Makes the ledger more scalable as data grows.

✍️ Sign Mode Textual

A new signing mode that enhances human readability and security of transactions.

Key Improvements

  • Makes signing workflows more understandable for humans, especially in multisig or governance scenarios.

  • Ideal for wallet interfaces and offline signing tools.

  • Enhances auditability and transparency of what is being signed.

🔌 DIDComm Enhancement for did:cheqd

We’re upgrading our DIDs to support a more flexible service section—a key step toward making did:cheqd fully interoperable with DIDComm.

Key Changes

  • Enables direct DIDComm connections using did:cheqd identifiers.

  • Adds support for DIDComm endpoint discovery within DID Documents.

  • Enhances compatibility with identity SDKs and agents such as ACA-Py and Credo.

These updates pave the way for seamless messaging and secure interactions between agents using cheqd DIDs.

🌟 What This Means for You

  • Faster performance & better tooling: Cosmos SDK v0.50 makes node operation and application development smoother and more efficient.

  • Stronger identity integrations: Full DIDComm support will enable easier adoption of cheqd DIDs in SSI ecosystems.

  • Future-proofing: This release lays the foundation for new features and upgrades in identity, governance, and interoperability across the Cosmos ecosystem.

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