April encompassed a dense series of initiatives within the Nexa ecosystem. Despite subdued activity in cryptocurrency markets during this period, Nexa’s endeavors attracted significant attention. To commence, we provided a comprehensive review of our recent Amsterdam conference, at which Bitcoin Unlimited President Andrew Clifford and Nexa Core developer Andrea Suisani engaged in substantive dialogue and delivered incisive insights of the current industry landscape.
Nexa blockchain splitted with its inaugural hard fork at block height 781,429, full-node users are advised to update their software to ensure continued protocol compliance. Furthermore, Nexa has attained Golden Sponsorship status for Canada’s foremost Web3 convening, the Blockchain Futurist Conference. With Nexa halving event scheduled to occur within the next year, alongside the successful BUIPs and numerous additional strategic developments, a comprehensive exposition is presented in this month’s newsletter below.
Andrew Clifford & Andrea Suisani at Web3 Panel, Amsterdam, March 2025
B.U. President Andrew Clifford and B.U. Core Developer Andrea Suisani join a panel discussion at Web3 Amsterdam. “To fee or not to fee?” is a highly relevant topic.
“To Fee or Not to Fee?” represents a salient issue within contemporary blockchain discourse. This question has assumed growing significance for both users and practitioners of decentralized ledger technologies. The panelists uniformly agreed that, in order to undergird the sustainability of a decentralized cryptocurrency network, participants must incur some form of economic contribution. In prevailing implementations, this contribution takes the form of modest transaction fees, although alternative funding mechanisms have been proposed.
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Nexa Blockchain Officially Hard-Forked at Height: 781429
Nexa’s blockchain underwent its inaugural hard fork at block height 781429, precipitating a network-wide migration to the Nexa Full Node 2.0 software. Continued participation in consensus now mandates that all full-node wallet operators upgrade to version 2.0 to remain compatible with the protocol. This release delivers an extensive suite of protocol optimizations and scripting extensions designed to enhance developer ergonomics, and markedly broaden the Nexa blockchain’s programmability.
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Nexa at Blockchain Futurist 2025 in Toronto - Discover Innovations Driving the Next Digital Era
The Blockchain Futurist Conference returns to Toronto with Nexa participating as a Golden Sponsor. As Canada’s premier Web3 gathering, the event convenes developers, investors and industry leaders to examine advancements and challenges in blockchain technology, decentralized finance, and digital assets.
Nexa is pleased to announce three speakers from our team. Nexa’s founder and lead developer, Andrew Stone, will deliver a talk titled “Leading with Code: Developers Building the Web3 Future”. Andrew Clifford, President of Bitcoin Unlimited and Chief Executive at Nexa, will present “10,000 Exchange-Traded Cryptos: Why Nexa?” and Shanice Desilva, Nexa’s Business Development & Ecosystem B2B lead, will join the panel “Code Meets Community: Building Teams that Scale Tech and Strategy”.
13 May 2025
Toronto, Canada
Blockchain Futurist Conference:
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Hashlock x Nexa sponsor Fractl Founders & Investors brunch ‘Maple and Gold’ edition, a Key Networking Experience for Canada’s Crypto and Finance Professionals
Toronto, Canada, will host Consensus, one of the most significant cryptocurrency conferences of 2025, when CoinDesk presents its inaugural Toronto-based edition from 14 to 16 May 2025.
The program features an array of distinguished speakers drawn from Canada’s leading digital-asset firms and the Canadian divisions of major global crypto enterprises. Among those scheduled to appear are Dean Skurka, Chief Executive Officer of WonderFi and Lucas Matheson, Canadian Chief Executive Officer of Coinbase.
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Bitcoin Unlimited Improvement Proposals 212 to 218: All Proposals Accepted
A major milestone for the Bitcoin Unlimited (BU) organization: all seven proposed Bitcoin Unlimited Improvement Proposals (BUIPs 212–218) were ratified following the membership vote, which concluded on 15 April 2025. The results demonstrate a strong consensus among members, with each proposal receiving a majority of affirmative votes and thereby influencing both the technical roadmap and organizational governance of BU. Voting was conducted via the VotePeer system and by manual signature submission, ensuring transparent, and verifiable participation. The ratified proposals encompass a range of development initiatives and organizational measures, including the election of new board members, and the renewal of key leadership appointments.
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Chainge Finance Services Unavailable: Please be aware that Chainge Finance services are currently unavailable.
Nexa has been integrated with Chainge Finance since May 2023 and we acknowledge their efforts in facilitating cross-chain connectivity. However, Chainge Finance has temporarily suspended bridge services for NEXA coin for the reasons detailed below. As this functionality is provided by an independent third-party, we recommend refraining from using the bridge until Chainge Finance resolves the underlying issues.
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New Hardfork Feature: OP_PARSE Script Explained
Within the evolutionary trajectory of UTXO‐based blockchain architectures, the augmentation of scripting languages through the introduction of novel opcodes has become essential to support increasingly sophisticated transaction constructs. The OP_PARSE opcode exemplifies this advancement by enabling deterministic extraction of structured script elements, such as serialized bytecode segments, according to a predefined format, thereby ensuring precise, schema‐driven placement onto the execution stack. In contrast to OP_SPLIT, which employs offset‐based indexing to segment arbitrary data buffers, OP_PARSE imposes a serialization schema that guarantees both the integrity and interpretability of extracted components.
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Nexa Special Purpose BIP-44 Accounts
Developers have convened to propose an extension to BIP-44 for Nexa, designed to mitigate the challenges decentralized applications face when managing UTXO-chain multi-address architectures. Our draft specification reserves accounts 1–99 within BIP-44-compliant Nexa wallets for designated “special-purpose” uses, thereby creating a standardized namespace for application-specific address management. We invite all developers to review the initial draft and provide feedback or contributions to refine, and enhance the proposal.
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Nexa Block Reward Halving Countdown: 365 Days
Nexa operates as a Proof-of-Work blockchain in which a protocol-enforced halving event occurs every 1,050,000 blocks. Each halving reduces the miner reward by fifty percent, decreasing new NEXA issuance from 10 million NEXA per block to 5 million NEXA per block.
Track halving:
To Summarize
In closing, Nexa’s rapid pace of innovation, from our first hard fork and the successful ratification of BUIPs to our growing presence at major Web3 conferences, underscores our commitment to advancing the blockchain ecosystem. As we approach the halving event and continue rolling out protocol enhancement, your participation and feedback remain invaluable. Stay connected via our forum, join us at upcoming events and help shape the future of Nexa. Together, we’re building the next generation of decentralized finance, the yellow blocks.