ONUS

ONUS was a Vietnamese cryptocurrency super-app that positioned itself as a fiat-to-crypto gateway and multi-asset investment platform for retail users across Southeast Asia. Founded in 2020, the platform claimed over 7 million registered users at its peak before abruptly halting operations in March 2026, following a Vietnamese law enforcement investigation into alleged fraud and money laundering involving the project's core team.

Origins and Rebranding

The project began as VNDC Wallet, launched in early 2020 by a team led by Vuong Le Vinh Nhan (also known as Eric Vuong). The VNDC Wallet was initially built around VNDC, a Vietnamese dong-pegged stablecoin (1 VNDC = 1 VND) designed to provide Vietnamese retail users a stable digital currency denominated in their local currency. In October 2021, after accumulating approximately 1.5 million users in its first 18 months, the platform rebranded to ONUS to signal its expansion beyond the VNDC stablecoin into a broader digital asset investment platform.

Products and Features

ONUS offered a mobile-first trading and investment platform covering several product areas.

Spot and Futures Trading (ONUS Pro): In March 2023, the team launched ONUS Pro as an enhanced exchange layer offering advanced trading tools, including perpetual futures contracts with leverage. The platform reported maker fees of approximately 0.02% and taker fees of 0.04% for futures, with spot commissions around 0.1% or less. ONUS Pro listed over 600 digital assets including major cryptocurrencies, DeFi tokens, stablecoins, and tokenized stocks.

Fiat Integration: A distinguishing feature for Vietnamese users was direct integration with over 30 Vietnamese bank accounts for VND deposits and withdrawals, with fiat-to-crypto conversions reportedly completing within 10 seconds. This made ONUS one of the most accessible on-ramps for Vietnamese retail investors.

Multi-Blockchain Custody: The platform's custodial wallets supported deposits and withdrawals across multiple blockchain networks, including Bitcoin, Ethereum (ERC-20), BNB Chain (BEP-20), Tron (TRC-20), Polygon, Arbitrum, TON, and Solana. Users could hold and transact Solana-native tokens including SOL through the ONUS interface.

Launchpad: ONUS ran a launchpad product for early token access. By September 2025, the platform had conducted 48 launchpool campaigns.

ONUS Chain and Native Token

The ONUS project operated its own blockchain, ONUS Chain, described as a high-performance, EVM-compatible smart-contract platform built on BNB Application Sidechain (BAS) using a Proof of Stake Authority (PoSA) consensus mechanism. ONUS Chain was not a Solana-based chain; it was architecturally positioned within the BNB ecosystem.

The native ONUS token served as both a utility and governance token for ONUS Chain: it powered transaction fees (approximately 50 Gwei per transaction), secured the network through validator staking, and enabled on-chain governance votes. CoinMarketCap data shows a maximum supply of 96.2 million ONUS tokens with approximately 83.1 million in circulating supply at the time of the platform's suspension. Token allocation included 33% for the community, 25.7% for ecosystem development, 20.6% for a foundation, and 10.3% for the core team.

Corporate Structure and Regulatory Licenses

The parent entity was Vemanti Group, Inc. (OTC: VMNT), listed on U.S. OTC markets. A separate operating entity, ONUS Finance UAB, was incorporated in Lithuania in 2022 and obtained cryptocurrency service provider licenses in Lithuania, the Czech Republic, and Poland. As of early 2025, the platform reported serving over 4.5 million registered users across more than 20 countries, with Vietnam historically representing approximately 80% of its user base.

Security Incidents

In December 2021, ONUS suffered a significant data breach exploiting the Log4Shell vulnerability. The breach compromised the personal information of approximately 1.92 million users.

Collapse and Criminal Investigation

On March 20, 2026, ONUS halted withdrawals and users began reporting login errors and inability to access funds. The shutdown preceded a coordinated law enforcement action by Vietnam's Ministry of Public Security.

On March 23 and 24, 2026, Vietnamese authorities initiated criminal proceedings against seven individuals, including Vuong Le Vinh Nhan (the platform's founder and Chairman of HVA Group, a company listed on Vietnam's UpCOM market), Tran Quang Chien (technical operations manager), and Ngo Thi Thao (Director of HANAGOLD Jewelry Company). Charges included appropriating property through computer networks and money laundering under Vietnam's Penal Code.

Investigators alleged that since 2018 the group had created and issued the VNDC, ONUS, and HNG tokens as fraudulent instruments, using misleading promotional information and wash trading to artificially manipulate token prices and attract investor funds. More than 140 individuals were questioned during the investigation. Authorities characterized the total financial harm as reaching into the billions of US dollars, though official loss estimates had not been published as of the time of the arrests.

Following the arrests, parent company Vemanti Group acknowledged a significant service disruption affecting users' ability to access their accounts and funds and stated it lacked direct system access to intervene on behalf of users. The ONUS platform did not resume trading operations. Vietnamese authorities appealed to affected investors to come forward with information.

Ecosystem Fit

ONUS's connection to the Solana ecosystem was at the integration layer: the platform supported Solana as one of multiple blockchain networks for asset custody and on-chain transfers, enabling Vietnamese users to deposit and withdraw SOL and Solana-native tokens. ONUS Chain itself was built on BNB Application Sidechain rather than Solana, and the project was not a Solana-native protocol. The platform's role within the Solana ecosystem was as a Southeast Asian retail access point, one of the larger consumer gateways through which Vietnamese users could acquire and hold Solana-ecosystem assets.

As of mid-2026, the ONUS platform remains suspended, with ongoing criminal proceedings against its founders and key executives in Vietnam.