ONUS

ONUS was a Vietnamese cryptocurrency super-app and digital asset exchange that operated from 2020 until its abrupt shutdown by Vietnamese authorities in March 2026. At its peak, the platform claimed more than seven million registered users and positioned itself as the leading crypto on-ramp for Vietnamese retail investors, supporting spot and futures trading across 600-plus cryptocurrencies on a single mobile-first interface.

Background and Origins

ONUS launched on March 23, 2020, as a rebranding and expansion of VNDC Wallet, itself established in 2018. The platform was developed by Digital Asset Management JSC, a Vietnamese entity whose General Director was Vuong Le Vinh Nhan — also known as Eric Vuong — who also served as Chairman of HVA Group and CEO of the investment fund FundGo. The platform's parent holding structure ultimately connected to Vemanti Group Inc., a U.S.-listed company.

The name ONUS stood for "Open Nation for Universal Success," and the project framed itself as a gateway to financial inclusion for Vietnamese users who had historically faced limited access to global capital markets. The platform operated primarily through a mobile app available on Android and iOS.

Platform Features and Supported Assets

ONUS offered a broad range of services packaged into a single consumer application:

Spot and Futures Trading. Users could trade over 600 cryptocurrencies, including Bitcoin, Ethereum, Solana, and a large selection of altcoins, with leverage available on perpetuals.

Multi-Chain Support. The platform supported deposits and withdrawals across a wide array of blockchain networks, including Bitcoin, Ethereum (ERC-20), Binance Smart Chain (BEP-20), TRON (TRC-20), Polygon, Solana, TON Network, and Arbitrum One. Solana integration meant users could move SOL and Solana-based tokens natively without bridging through intermediary chains.

Native Tokens. ONUS issued several tokens that formed the backbone of its internal economy:

• VNDC — a Vietnamese-dong-pegged stablecoin marketed as a fiat on-ramp tool
• ONUS — the platform's governance and utility token
• HNG — the token of affiliated HANAGOLD Jewelry Company, marketed alongside ONUS as an investment product

Investment and Savings Products. Beyond trading, the platform offered staking, savings pools, and third-party investment products, including a tie-in with HANAGOLD that linked jewelry-backed assets to digital token issuance.

ONUS Pro. A higher-tier product targeting more active traders offered advanced charting, deeper liquidity, and access to institutional-grade features. By early 2025, the platform reported 4.5 million registered users through ONUS Pro alone.

Solana Ecosystem Presence

ONUS's connection to Solana was primarily infrastructural: the exchange listed SOL as a tradeable asset and offered native Solana network support for deposits and withdrawals, allowing users to move tokens at Solana network speeds and fees rather than routing through slower or more expensive chains. The ONUS token itself appears to have had a Solana-chain deployment, contributing to the exchange's presence in Solana ecosystem listings.

Fraud, Arrests, and Shutdown

Despite rapid user growth, Vietnamese authorities began a broad investigation into the ONUS ecosystem that culminated in coordinated enforcement action in March 2026.

On March 20-21, 2026, Vietnamese police conducted search operations and interrogations of more than 140 individuals across multiple cities. Seven individuals were formally arrested, including:

• Vuong Le Vinh Nhan (born 1984, Can Tho) — General Director of Digital Asset Management JSC and CEO of investment fund FundGo
• Tran Quang Chien (born 1991, Hanoi) — Technical administrator of the ONUS exchange
• Ngo Thi Thao (born 1994, Ho Chi Minh City) — Director of HANAGOLD Jewelry JSC

Criminal proceedings were formally initiated on March 23, 2026. Suspects were charged with utilizing computer networks, telecommunications, and electronic devices to execute asset misappropriation, as well as money laundering.

Authorities alleged that beginning in 2018, the group had systematically fabricated cryptocurrencies — specifically VNDC, ONUS, and HNG — then disseminated misleading promotional materials and conducted wash trading to create artificial supply and demand, manipulating token prices upward to attract investor capital. The operation also incorporated a multi-level marketing structure with deceptive commission promises.

The Vietnamese Ministry of Finance estimated investor losses at approximately 3 billion USD, making it one of Vietnam's largest cybercrime cases on record. Individual victims reported losses ranging from thousands to tens of thousands of dollars each.

Platform Shutdown and User Impact

The ONUS super-app went offline on March 20, 2026, the same day authorities launched their enforcement sweep. Users were locked out with no ability to log in, access balances, or initiate withdrawals. At the time of shutdown, approximately seven million users held assets on the platform. No official communication was made to users at the point of closure.

The sudden freeze of user funds, with no announced recovery process at the time of shutdown, left the full extent of individual losses unclear. Vietnamese authorities called on victims to cooperate with investigators to assist in quantifying total harm.

Regulatory Context

ONUS's rapid growth occurred against a backdrop of ambiguous Vietnamese cryptocurrency regulation. Vietnam permitted blockchain development while formally banning cryptocurrency as a payment method, leaving enforcement gaps that authorities acknowledged had allowed the scheme to scale over nearly eight years. Resolution 05/2025/NQ-CP, passed in September 2025, introduced a five-year regulatory pilot program for digital assets — but the legislation came too late to prevent the ONUS collapse.

Status

ONUS is no longer operational. The platform was shut down by Vietnamese authorities in March 2026, its founders have been arrested, and users cannot access funds held on the exchange. The project's native tokens — VNDC, ONUS, and HNG — lost effective utility upon the platform's closure.