Nexa Monthly Newsletter – February 2025

Announcements
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Nexa 2.0 Full Node Wallet Release & Hard Fork Scheduled For March 31 – Mandatory Upgrade

A major and mandatory upgrade for the Nexa blockchain is here. Nexa 2.0 Full Node Wallet is already released, and a hard fork is scheduled for March 31, 2025, at 12:00 UTC. This upgrade is essential for all Nexa full node wallet users, failure to upgrade before the activation date will result in incompatibility with the network.

Download Nexa Full-Node 2.0 Now:

To upgrade to Nexa 2.0, download the appropriate installer for your operating system. Additional installation options are available in the official release directory and on our website, and full release details are available on GitLab.

What’s New in Nexa 2.0?

Developers will benefit from advanced scripting capabilities, including new opcodes like OP_MERKLEROOT and OP_JUMP, which expand the functionality of NexScript and open up more possibilities for on-chain applications. Additionally, the implementation of script machine registers introduces OP_STORE and OP_LOAD, allowing more efficient data storage and retrieval within scripts, as outlined in the Nexa script registers specification.

Read-Only UTXOs upgrade introduces the ability to include inputs in a transaction that do not spend the underlying UTXO (Unspent Transaction Output). This allows transactions to “read” data from the blockchain without consuming or modifying that data.

In UTXO-based blockchains like Bitcoin, using an input would mean that the input is “destroyed” and cannot be reused. On Nexa multiple transactions can now read the same UTXO simultaneously in parallel without waiting for previous transactions to clear. This eliminates the need for a “queue”, where transactions would otherwise have to line up to access the same state data.

Below is the list of upgrades:

  • Advanced scripting capabilities – New opcodes like OP_MERKLEROOT and OP_JUMP expand NexScript’s functionality, enabling more complex on-chain applications.
  • Efficient data handling – Script machine registers (OP_STORE and OP_LOAD) improve data storage and retrieval, following the Nexa script registers specification.
  • Enhanced smart contracts – New introspection opcodes (OP_INPUTTYPE, OP_OUTPUTTYPE, OP_INPUTVALUE) allow for more sophisticated and secure transaction validation.
  • Improved stack operations – OP_ROLL and OP_PICK now support negative indexes, providing greater flexibility.
  • Simplified transaction introspection - A powerful opcode OP_PARSE automatically parsing structured script data, significantly reduces the complexity of writing custom bytecode parsers for smart contracts and state-dependent transactions.
  • Read-only inputs – Enables advanced transaction validation, improving both efficiency and security.
  • Resource optimization – Significant improvements in memory and CPU efficiency ensure Nexa full nodes operate smoothly across various hardware configurations.
  • Expanded platform support – Compatibility with RISC-V architectures and Alpine Linux enhances accessibility.
  • Enhanced documentation – Updated RPC documentation simplifies integration for developers.

This release is a major step forward for the Nexa blockchain. It boosts scalability, improves efficiency, and simplifies development. These features empower developers to create scalable decentralized apps, pushing the limits of traditional blockchain technology for a decentralized future of finance.

Important Notice

This is a mandatory release! All full node users must upgrade to version 2.0 before March 31, 2025 to remain compatible with the Nexa blockchain. Failure to do so will result in nodes being unable to participate in the network after activation.

A special thanks goes out to the Nexa developers and core contributors for their dedication: Andrea Suisani, Andrew Kallmeyer, Andrew Stone, Dagur Valberg Johannsson, Dolaned, Griffith, Jørgen Svennevik Notland, Peter Tschipper, Proteus, and vgrunner.

Full release details:

https://gitlab.com/nexa/nexa/-/blob/dev/doc/release-notes/2.0.0.0.md

Nexa as Platinum Sponsor at Web3 Conference Amsterdam – March 13-14

Nexa continues its global conference presence, following successful engagements at Crypto Adria in Mostar and the Australian Crypto Conference in Sydney. The next stop is the Web3 Amsterdam, taking place on March 13-14 at Circa Amsterdam in the Netherlands.

Why This Event Matters

This conference marks a significant moment for Nexa, coinciding with its upcoming hard fork and Nexa 2.0 upgrade. As a Platinum Sponsor, Nexa will have a prominent presence at the event, reinforcing its position as a fair, programmable, scalable, and decentralized blockchain.

The conference is a global hub for blockchain innovation, drawing developers, investors, enterprises, and blockchain enthusiasts. We will have our branded booth and will showcase, and introduce Nexa to the wide public.

  • Showcase capabilities in scalability, programmability and upcoming ecosystem.
  • Connect with top crypto companies and builders for dApp and payment solution integrations.
  • Engage with investors and key players in the Web3 ecosystem.

Nexa’s robust, scalable architecture is well-suited for various use cases.

  • E-commerce and micropayments
  • Gaming transactions and tokenization
  • Enterprise blockchain solutions
  • Event ticketing and secure transactions

This sponsorship underscores Nexa’s commitment to decentralization, scalability, and programmability, as well as fostering blockchain adoption. Attendees will have the opportunity to interact with the Nexa team and gain firsthand insights into its technology and future vision.

Nexa Speaker Lineup

Key figures from the Nexa will be speaking at Web3 Amsterdam:

  • Andrew Stone - Bitcoin Unlimited Founder & Nexa Lead Developer
  • Andrew Clifford - Bitcoin Unlimited President
  • Andrea Suisani - Nexa Core Developer

Free Tickets for Our Community

We have a limited number of free tickets available for community members interested in attending Web3 Amsterdam. If you are in the Netherlands or willing to travel, contact us to claim a ticket while supplies last.

For more details:

Moving Forward

With the hard fork approaching and an exciting conference schedule ahead, 2025 is shaping up to be a memorable year for Nexa. But that’s not all, there are more major plans and events in the pipeline, along with ongoing developments and technological improvements. We are excited about what’s coming, so make sure to stay with us on this journey!