Andrew Clifford & Andrea Suisani at Web3 Panel, Amsterdam 2025
B.U. President Andrew Clifford and B.U. Core Developer Andrea Suisani participated in a panel discussion at Web3 Amsterdam.
“To fee or not to fee?”, a question that has become increasingly relevant within the blockchain ecosystem, was the central theme of the session. All panelists concluded that sustaining a decentralized cryptocurrency network inevitably requires some form of user contribution, typically in the form of low transaction fees, though alternative mechanisms also exist.
Moderated by Crimson Cloud of Hive and Dom from Heiko, the discussion explored the role of transaction fees in supporting decentralized networks, their implications for adoption and potential alternatives such as staking models or perceived “feelessness”. While perspectives varied on how costs should be structured, there was consensus that some cost must be borne to maintain a secure and operational blockchain.
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Bitcoin Unlimited Improvement Proposals 212 to 218: All Proposals Accepted
We are pleased to announce a significant milestone for the Bitcoin Unlimited (BU) organization. All seven proposed Bitcoin Unlimited Improvement Proposals (BUIPs 212–218) have been successfully ratified. The membership vote concluded on 15 April 2025, marking a strong consensus among participants.
Voting was conducted through both the VotePeer system and manual signature submissions, ensuring transparency and verifiability. These proposals encompassed a wide range of topics, including development initiatives, organizational structure, the election of new members and the continuation of key leadership roles. All BUIPs met the quorum requirement of over 50% member participation.
This round of approvals plays a vital role in shaping the future technical and organizational trajectory of Bitcoin Unlimited.
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New Hardfork Feature: OP_PARSE Script Explained
As UTXO-based blockchains evolve, the introduction of new opcodes continues to enhance scripting capabilities to meet increasingly complex transaction requirements. The new OP_PARSE opcode is a major step forward, it enables automated parsing of common script data types, such as bytecode, by extracting specific segments and placing them onto the stack.
Unlike OP_SPLIT, which retrieves data from buffers of any format using offset-based indexing, OP_PARSE operates on data serialized in a predefined format. This ensures precise and structured data extraction.
The opcode significantly reduces the complexity of constraint scripts and enables more efficient implementation of advanced transaction patterns such as vaults, reversible payments and state batons. Its design prioritizes flexibility and compatibility, allowing both current and future scripts to utilize its capabilities without sacrificing functionality. OP_PARSE exemplifies how targeted opcode enhancements can increase scripting precision and developer productivity in UTXO-based systems.
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Chainge Finance Services Unavailable: Please be aware that Chainge Finance services are currently unavailable
Please be advised that Chainge Finance services are currently unavailable.
Nexa has been integrated with Chainge Finance since May 2023 and we acknowledge their role in bridging networks and providing services to the Nexa ecosystem. However, it has been brought to our attention that bridge services for the NEXA coin are currently unavailable. The Chainge team has provided further explanation in the linked update.
We remind our users that Chainge is a third-party service provider. Until the situation is resolved, we advise against using their services for NEXA-related bridging operations.
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Nexa Special Purpose BIP-44 Accounts
In response to the challenges decentralized applications (dApps) face when managing the multi-address architecture typical of UTXO chains, a draft specification has been proposed to extend BIP-44 within the Nexa ecosystem.
This extension reserves accounts 1–99 in BIP-44, compliant Nexa wallets for special purposes, streamlining wallet behavior for developers and applications. The draft is open to public feedback and contributions from the broader community are encouraged.
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Closing Thoughts
The Nexa team continues to advance the foundational infrastructure essential for a resilient and forward-looking decentralized system. While much of this critical work takes place behind the scenes, we invite community members, developers and investors to remain actively engaged. Your contributions are vital as we collectively build the future of decentralized finance.