JuCoin is facing renewed scrutiny after on-chain investigator ZachXBT flagged user reports of withdrawal delays and questioned the quality of the exchange’s reported reserves. The concerns emerged after several users said they had experienced difficulty withdrawing funds, prompting wider attention to the exchange’s liquidity position, reserve disclosures and operational stability.
The exchange, now operating as Ju.com, has attributed service disruptions to platform upgrades and restructuring activity. Its website has displayed multiple announcements related to service resumption schedules, internal transfer suspensions, asset security upgrades and business restructuring. However, the explanation has not fully addressed concerns raised by users and analysts because withdrawal issues at centralized exchanges are often treated as an early warning sign of liquidity stress.
ZachXBT also questioned JuCoin’s reported reserve figures. The exchange has cited reserves of more than $500 million, while CoinMarketCap data recently showed Ju.com with roughly $412 million in reported total assets and about $2.47 billion in 24-hour spot volume. CoinMarketCap also displayed a warning that certain assets shown in Ju.com reserve data had no confirmed cross-chain bridging relationship with USDT issued by Tether, USDC issued by Circle, BTCB issued by Binance or SOL on the Solana mainnet.
Reserve quality becomes the key issue
The central concern is not only the headline reserve number, but the composition and verifiability of those reserves. ZachXBT alleged that a large portion of JuCoin’s reported reserves appeared to consist of USDC and USDT issued on JuCoin’s own JuChain, rather than externally issued stablecoins backed by established issuers such as Circle or Tether. If accurate, that distinction would be important because internally issued or wrapped assets may not carry the same redemption assurance as native stablecoins issued by regulated or widely recognized entities.
For exchange users, reserve quality matters as much as reserve size. A platform may report a large asset base, but if a meaningful share consists of self-issued tokens, illiquid assets or wrapped representations with unclear backing, users may still face withdrawal risk during periods of stress. The collapse of several crypto platforms in previous cycles has made traders more sensitive to whether proof-of-reserves reports include liabilities, wallet-level verification and independently auditable asset backing.
Ju.com’s public market data also shows a mismatch that traders are likely to examine closely. Reported 24-hour spot volume above $2 billion compared with roughly $412 million in listed assets may not itself prove a problem, but it increases the importance of transparent reserves, liquidity management and withdrawal reliability.
Exchange transparency faces renewed scrutiny
The episode highlights the broader risk around centralized exchanges that operate across multiple jurisdictions, issue ecosystem assets and rely on internal chains or wrapped tokens. Users depend on these venues for custody, trading and withdrawals, but visibility into liabilities, reserve composition and internal asset flows is often limited.
Past incidents linked to JuCoin’s ecosystem have added to investor caution. Reports have referenced earlier issues involving JuDAO, including a large loss in 2025 and a smaller smart contract exploit in 2026. ZachXBT has also pointed to prior concerns about the platform, including questions raised in 2025 despite JuCoin’s visibility at major industry events.
There is no public proof that JuCoin is insolvent, and withdrawal delays can occur during wallet upgrades, compliance checks or technical maintenance. However, unresolved withdrawal complaints and questions around reserves can quickly damage confidence because exchange businesses depend on user trust and immediate access to funds.
For the broader crypto market, the case reinforces why proof-of-reserves must evolve beyond headline asset totals. Investors increasingly expect independently verifiable reserves, clear liability disclosures, native asset backing, regular audits and fast communication during service disruptions. JuCoin’s next steps will be important: restoring normal withdrawals, clarifying the structure of its reserves and explaining how user assets are protected will determine whether the current concerns remain a temporary operational issue or develop into a deeper confidence problem.
