Testnet Release

Release 1: Support int256

Start Date: 18 November 2024 Completion Date: 23 November 2024 Status: Completed

Description: The inclusion of this new feature is designed to accommodate higher precision and larger numerical values, addressing current limitations and enabling Zetrix to support future scalability and advanced applications, such as high-volume transactions and complex smart contracts.

---

Release 2: Increase transaction queue

Completion Date: 24 October 2025 Status: Completed

Description: This release increases transaction queue capacity and timeout limits to handle higher load, with the transaction timeout extended to 24 hours, the total queue limit raised to 300,000, and per-account transaction limit increased to 64,000. It also updates the system to Ledger version 1002 and Chain version 1.0.3.

Release Info

Changes:

• Increased QUEUE_TRANSACTION_TIMEOUT to 24 hours

• Increased queue_limit to 300000

• Increased queue_per_account_txs_limit to 64000

Update info

• Ledger version : 1002

• Chain version : 1.0.3

---

Release 3: Improve consensus timing

Completion Date: 28 October 2025 Status: Completed

Description: This release improves consensus timing by reducing the leader node’s propose timeout and increasing the verification node’s check timeout, along with general timeout adjustments and enhanced logging. It also updates the system to Ledger version 1004 and Chain version 1.0.5.

Release Info

Changes:

• Reduce the propose timeout of the leader node and increase the check timeout of the verification node

• Increase log output

• Adjust the timeout settings

Update info

• Ledger version : 1004

• Chain version : 1.0.5

---

Release 4: Improve system stability and memory management

Completion Date: 30 October 2025 Status: Completed

Description: This release improves system stability and memory management by clearing cached data after block synchronization, introducing a scheduled cleanup of the transaction cache every 5 minutes, and adding debug logs for failed byte message sends. It also updates the system to Ledger version 1005 and Chain version 1.0.6.

Release Info

Changes:

1. Ensure cached data deleted after block synchronized

2. Scheduled cleanup on TX cache every 5 min

3. Added debug log when failed to send byte msg

Update info

• Ledger version : 1005

• Chain version : 1.0.6

---

Release 5: Enhances performance and concurrency by enabling direct account loading from the database

Completion Date: 3 November 2025 Status: Completed

Description: This testnet release enhances performance and concurrency by enabling direct account loading from the database without locks, replacing timer-based ledger sync with a dedicated thread and queue, and removing read locks from web server queries. It also improves network reliability with a transaction resend mechanism. A breaking change requires the /getAccountMetadata endpoint to include a key parameter, or it will return an error. The update moves the system to Ledger version 1006 and Chain version 1.0.7.

Testnet Release Info

Changes

1. Introduce AccountFrm::LoadAccountFromDb for direct DB access without locks

2. Replace timer-based ledger sync with dedicated thread and queue processing

3. Add transaction resend mechanism to improve network propagation

4. Remove read locks from web server query operation

Update info

• Ledger version : 1006

• Chain version : 1.0.7

Breaking change

• /getAccountMetadata MUST provide key as well, otherwise it returns error eg) /getAccountMetadata?address=<ZTX3...>&key=dummy

---

Release 6: Restores mutex lock operation for block execution

Completion Date: 4 November 2025 Status: Completed

Description: This release restores mutex lock operations for block execution during both synchronization and consensus to ensure proper consistency and thread safety. It updates the system to Ledger version 1007 and Chain version 1.0.8.

Release Info

Changes:

1. Restore mutex lock operations for block execution during synchronization and block execution during consensus

Update info

• Ledger version : 1007

• Chain version : 1.0.8

---

Release 7: Updates the V8 engine usage and refines the calling logic of CallContract

Completion Date: 10 November 2025 Status: Completed

Description: This release updates the V8 engine usage and refines the calling logic of CallContract to improve execution behavior. It also upgrades the system to Ledger version 1008 and Chain version 1.0.9.

Release Info

Changes:

1. Modify the usage method of the V8 engine

2. Adjust the calling logic of CallContract

Update info

• Ledger version : 1008

• Chain version : 1.0.9

---

Release 8: MCP Server

Completion Date: 29 November 2025 Status: Completed

Description: User can use it to interact with our Zetrix RPC, WebSocket and even create/deploy/test a smart contract.

The Zetrix MCP Server is a comprehensive bridge between AI assistants (like Claude) and the Zetrix blockchain. It provides 44 specialized tools that enable natural language interactions with blockchain operations, making blockchain technology accessible through conversational AI.

Key Capabilities:

• Query blockchain data (accounts, blocks, transactions)

• Execute real-time monitoring via WebSocket connections

• Generate and manage cryptographic keys

• Develop and deploy smart contracts

• Sign and submit transactions

• Interact with existing contracts

---

Release 9: Fixes an initialization error encountered during contract queries

Completion Date: 16 November 2025 Status: Completed

Description: This release fixes an initialization error encountered during contract queries, improving reliability. It updates the system to Ledger version 1009 and Chain version 1.1.0.

Release Info

Changes:

1. Fixed initialization error during contract query

Update info

• Ledger version : 1009

• Chain version : 1.1.0

---

Release 10: Recompiles and fixes the initialization error during contract queries

Completion Date: 18 December 2025 Status: Completed

Description: This release recompiles and fixes the initialization error during contract queries to ensure the issue is fully resolved. It updates the system to Ledger version 1011 and Chain version 1.1.2.

Release Info

Changes:

1. Fixed initialization error during contract query (recompile)

Update info

• Ledger version : 1011

• Chain version : 1.1.2

---

Release 11: Simplifies the /getAccount API by removing metadata from its response

Completion Date: 3 March 2026 Status: Completed

Description: This release simplifies the /getAccount API by removing metadata from its response. It updates the system to Ledger version 1012 and Chain version 1.1.3.

Release Info

Changes:

1. Remove metadata from /getAccount api

Update info

• Ledger version : 1012

• Chain version : 1.1.3

---

Release 12: PQC upgrade on testnet

Completion Date: 23 April 2026 Status: Completed

Description: This release enhances smart contract capabilities by adding safe operations for int64 and int256 types, introducing bitwise operation support, and integrating Dilithium3 for post-quantum cryptography. It updates the system to Ledger version 1013 and Chain version 1.1.4.

Release Info

Changes:

1. Add in64/int256 safe op support in contract

2. Add bitwise op support in contract

3. Add Dilithium3 support for PQC

Update info

• Ledger version : 1013

• Chain version : 1.1.4

---

Release 13: Disables multiQuery API and hardens the V8 contract runtime

Completion Date: 24 July 2026 Status: Completed

Description: This release disables the multiQuery API, whose unbounded recursive calls could cause out-of-memory conditions and impact validator availability. It also hardens the V8 contract runtime against non-deterministic execution by removing Intl, disabling Function-constructor code generation, and undefining locale-sensitive String/Number prototype methods. It updates the system to Ledger version 1014 and Chain version 1.1.5.

Release Info

Changes:

1. Disable multiQuery API (unbounded recursive calls could cause OOM and impact validator availability)

2. Harden V8 contract runtime against non-deterministic execution (remove Intl, disable Function-constructor code generation, undefine locale-sensitive String/Number prototype methods)

Update info

• Ledger version : 1014

• Chain version : 1.1.5

---