Proto Enables Privacy Token Standard on Beldex Testnet: When Privacy Is Built Into the Token Itself

Public blockchains made digital assets programmable, transferable, and accessible across applications. But they also introduced a fundamental trade-off: financial activity is often publicly observable by default. A token can power a decentralized application, represent an asset, facilitate payments, or provide access to a service. Yet on most transparent blockchain networks, the transactions involving that token can leave a publicly traceable history. Privacy is then something developers have to add later, as an afterthought. Beldex changes this approach. At Beldex, we have taken the exact opposite approach: we start with privacy at the network layer and build outward from there. With Confidential Assets, also known as Privacy Tokens, now live on the Beldex testnet, we are extending that approach beyond BDX and enabling developers to deploy/issue their own privacy-preserving assets directly on the Beldex network. The implementation is being introduced through the Proto testnet hard fork at block height 4,242,200. Developers can now deploy and test Privacy Tokens on the Beldex testnet and obtain testnet BDX through the Beldex Faucet. The Problem With Adding Privacy Later Blockchains were designed around verifiability. That has enormous benefits, but transparency also creates challenges when blockchain infrastructure is used for financial activity that users or businesses may not want exposed publicly. On a transparent network, transaction information can potentially be analyzed to build a picture of how an address interacts with other addresses and applications. This correlation may sometimes also reveal information pertaining to a user’s Web3 identity. Developers can attempt to introduce privacy at the application level, but the underlying asset may still operate on transparent infrastructure. This raises a broader question: What if privacy were a property of the asset itself? That is the idea behind Privacy Tokens on Beldex. Instead of issuing an asset first and subsequently building mechanisms to make its transactions private, developers can issue tokens on infrastructure where transaction confidentiality is already part of the underlying network. Privacy at the Asset Layer Privacy Tokens are independently issued assets on Beldex that inherit transaction-level privacy from the network. The initial implementation uses Beldex's UTXO-based architecture, extending the privacy model used for BDX to other assets issued on the network. This allows sensitive transaction information, including sender and recipient details, transferred amounts, and balances, to remain protected from public visibility. As Beldex Chairman Afanddy Bin Hushni explains: “Privacy Tokens lets developers build an entire application economy where privacy is the starting point. It isn’t just another token standard. Whether it’s a private DeFi protocol, a confidential rewards system, or a new dApp entirely that no one has previously imagined, these assets all inherit the same cryptographic guarantees that protect every BDX transaction on our network.” From Building Private Applications to Infrastructure for Developers Until now, much of Beldex's development has focused on building applications around different areas of online privacy. That ecosystem includes BChat for private messaging, BelNet for decentralized network routing, the Beldex Browser for private web access, the Beldex Wallet, and BNS for decentralized blockchain-based names. Privacy Tokens represent a shift in what developers outside Beldex can build on the network. A developer could issue a Privacy Token and make it the native asset of an independent application. Depending on the project, that asset could be used for private payments, rewards, access mechanisms, community utilities, DAOs, decentralized financial applications, or other use cases. Rather than requiring every developer to recreate the underlying privacy infrastructure, Beldex provides the network and asset layer on which those applications can be built. A Token Standard Needs a Developer Stack Making private assets available on a blockchain is only one part of the problem. If developers are going to build applications around those assets, they also need a practical way for applications to communicate with wallets and interact with the network. That is why the Privacy Token rollout is accompanied by two important developer-facing components: the Beldex Extension Wallet and Beldex Web3JS SDK. Beldex Extension Wallet The Beldex Extension Wallet provides a browser-based wallet interface through which users can create and manage wallets and interact with supported applications. For developers, the extension creates the connection between a web application and the user's Beldex wallet. Beldex Web3JS SDK The Beldex Web3JS SDK provides the developer interface for integrating Beldex functionality into web applications. Together, these components create the beginnings of a developer stack around private assets: Privacy Tokens → Extension Wallet → Web3JS SDK → Privacy-first dApps Applications can connect with wallets, retrieve relevant wallet information, initiate supported transactions, and incorporate Privacy Tokens into application workflows while preserving the privacy model underneath. What Could Be Built With Private Assets? There isn't a single prescribed use case for Privacy Tokens. That is the point. A private asset layer could provide the foundation for applications such as private payment networks, decentralized swap platforms, confidential rewards systems, privacy-focused DeFi applications, access or membership systems, and applications that have yet to be conceived. Consider a rewards system, for example. On transparent infrastructure, token balances and transfers associated with rewards could potentially become part of a publicly inspectable transaction history. With a privacy-preserving asset, the application can provide token utility without requiring the user's underlying financial activity to become publicly visible. The same principle can extend to payments, financial applications, community assets, and other forms of tokenized utility. Developers also do not need to launch an entirely new blockchain simply to create an asset with transaction privacy. They can build on an existing Layer 1 designed around privacy. Why Beldex Is Starting With UTXO The first version of Privacy Tokens uses Beldex's existing UTXO-based architecture. There is a deliberate reason for that. Instead of beginning with a transparent account-based architecture and attempting to introduce privacy afterward, the initial implementation builds on the privacy architecture Beldex already uses. But the UTXO implementation is not intended to be the final stage. Beldex is developing account-based addresses along with a planned EVM-compatible sidechain. As that infrastructure develops, the goal is to provide a path for assets originating on Beldex's UTXO layer to move or bridge into an EVM-compatible environment while retaining privacy-oriented capabilities. The progression is therefore: UTXO-native privacy → Account-based infrastructure → EVM-compatible privacy Or more simply: Privacy first. EVM compatibility second. This is fundamentally different from starting with a transparent EVM environment and attempting to attach privacy afterward. Opening Beldex to More Builders Privacy Tokens also represent part of a larger transition for Beldex. For years, we have primarily built our own ecosystem of privacy applications. Now, the network is increasingly being opened to developers who want to build their own. Privacy Tokens provide the asset layer. The Extension Wallet provides the user interface. The Web3JS SDK provides the developer interface. And the Beldex Grants Program (Apply here → https://www.beldex.io/grants) provides another route for developers, startups, and teams interested in building privacy-focused applications and infrastructure on Beldex. The $1 million ongoing grants program is open globally to projects that build on or meaningfully utilize the Beldex network, with applications reviewed individually based on factors including privacy innovation, technical feasibility, ecosystem impact, security standards, milestone clarity, and other relevant criteria. Start Experimenting on Testnet Privacy Tokens are now available on the Beldex testnet through the Proto hard fork at block height 4,242,200. Developers interested in experimenting with the new infrastructure can start with: Beldex Testnet: <https://testnet.beldex.dev/](https://testnet.beldex.dev/) Testnet BDX Faucet: <https://faucet.beldex.dev/](https://faucet.beldex.dev/) Beldex Extension Wallet: <https://chromewebstore.google.com/detail/beldex-wallet/onhnehjhhionmnbidajneakngpiefapa](https://chromewebstore.google.com/detail/beldex-wallet/onhnehjhhionmnbidajneakngpiefapa) Beldex Web3JS SDK: <https://www.npmjs.com/package/@bdxi/web3js](https://www.npmjs.com/package/@bdxi/web3js) Beldex Grants Program: https://www.beldex.io/grants The current rollout is a testnet release, giving developers the opportunity to deploy assets, test integrations, experiment with applications, and provide feedback ahead of the planned mainnet rollout. Blockchains have spent years making assets programmable. The next question is whether those assets also need to make every financial interaction publicly observable. With Privacy Tokens, our answer is no. Privacy can begin with the asset itself.