Case Details
- Citation: [2023] SGHC 199
- Court: High Court (General Division)
- Originating Claim No: 320 of 2022
- Summonses: Nos 910 and 1526 of 2023
- Date: 5 May 2023 (hearing); 24 July 2023 (judgment reserved); 25 July 2023 (judgment)
- Judges: Philip Jeyaretnam J
- Plaintiff/Applicant: ByBit Fintech Limited (“ByBit”)
- Defendant/Respondent: Ho Kai Xin (“Ms Ho”) and others
- Other Defendants: (2) Persons Unknown; (3) Foris Dax Asia Pte Ltd; (4) FTX Trading Ltd; (5) Consensys Software Inc; (6) Quoine Pte Ltd
- Legal Areas: Civil Procedure (Summary Judgment); Trusts (Constructive Trusts); Choses in Action; Cryptoassets/Property
- Statutes Referenced: Not specified in the provided extract
- Cases Cited: Not specified in the provided extract
- Judgment Length: 24 pages; 7,197 words
- Procedural Posture: Application for summary judgment against the first defendant
Summary
ByBit Fintech Limited v Ho Kai Xin and others concerned an alleged internal fraud involving a cryptoasset described as a “stablecoin”, namely Tether’s USDT. ByBit sought summary judgment against Ms Ho, contending that she abused her position as an employee responsible for payroll processing to transfer 4,209,720 USDT into blockchain “Addresses” secretly controlled by her, and to divert US$117,238.46 in fiat currency into her personal bank account. The principal remedy sought was a declaration that Ms Ho held the USDT and the fiat proceeds on trust for ByBit, together with orders for return or payment of traceable proceeds.
The High Court (Philip Jeyaretnam J) granted summary judgment. The court held that USDT is capable of being held on trust and treated it as a “chose in action” (things in action). Although the court acknowledged that cryptoassets can be transferred cryptographically without legal assistance, it reasoned that the legal classification required for trust purposes could still be satisfied. On the facts, the court further found that ByBit had established its case for an institutional constructive trust, rather than merely a remedial constructive trust, and therefore granted the declarations sought.
Importantly for practitioners, the decision goes beyond the interlocutory stage where courts often recognise a “serious question to be tried” that cryptoassets may be property. Here, the court made the determinative findings necessary for final relief: (i) USDT is property capable of being held on trust, and (ii) the appropriate trust framework was institutional constructive trust. The judgment thus provides a structured approach to cryptoasset proprietary claims in Singapore, particularly in the context of summary judgment.
What Were the Facts of This Case?
ByBit is a cryptocurrency exchange business incorporated in Seychelles. It remunerated employees using traditional currency, cryptocurrency, or a mixture of both. Payroll services for ByBit and related entities were provided by WeChain Fintech Pte Ltd, a Singapore-incorporated company. Ms Ho was employed by WeChain and was responsible for payroll processing for ByBit’s employees, including the administrative steps necessary to ensure that employee payments were made to the correct fiat and crypto destinations.
As part of her role, Ms Ho maintained Microsoft Excel spreadsheets that tracked monthly payments due to employees. Two spreadsheets were central: “Fiat Excel Files” for cash payments and “Cryptocurrency Excel Files” for cryptocurrency payments. The Cryptocurrency Excel Files recorded the “Address” designated by each employee for receipt of cryptocurrency. In blockchain terms, an Address is an encrypted digital “folder” that can receive and store cryptocurrency, typically represented by a unique string of alphanumeric characters. Transfers require a corresponding “Private Key” to authorise movement of funds between Addresses. Private Keys are stored in “Wallets”, which may be hosted online by a service provider (custodial wallets) or stored offline (self-custodial wallets).
ByBit’s employees could change their designated Addresses by communicating new Addresses to Ms Ho, who would update the Cryptocurrency Excel Files. The evidence emphasised that Ms Ho was singularly responsible for updating the Cryptocurrency Excel Files, subject to monthly approval by her superior, Ms Casandra Teo. This operational control became significant when ByBit later discovered anomalies in the cryptocurrency payments.
On 7 September 2022, ByBit discovered eight unusual cryptocurrency payments made between 31 May 2022 and 31 August 2022. These “Anomalous Transactions” involved large transfers of USDT into four Addresses (Address 1 to Address 4). In total, 4,209,720 USDT were transferred into those Addresses. USDT is tethered to the US dollar and, for verified holders, carries a contractual right to redeem USDT for US dollars from the issuer, Tether Limited. ByBit compiled the anomalies into a “Reconciliation Excel File” and tasked Ms Ho with accounting for discrepancies.
Initially, Ms Ho attributed the Anomalous Transactions to inadvertent mistakes or technical errors and offered to calculate amounts to be clawed back from employees. However, between 9 and 22 September 2022, she was unable to provide a satisfactory explanation. When asked why payments to different employees were made to the same Address (Address 1), she again suggested inadvertence. ByBit’s internal investigations then escalated. By contacting one supposed recipient, ByBit learned that the employee denied ever designating Address 1 and stated he had only been remunerated with traditional currency. ByBit further discovered that Ms Ho’s work email had sent to itself an email containing Address 1 on 19 May 2022. Ms Ho’s work email also received an email containing all four Addresses on 29 August 2022, originating from Ms Ho’s personal email. These emails had to be recovered because they had been deleted.
In addition to the USDT transfers, ByBit discovered that Ms Ho caused US$117,238.46 (the “Fiat Asset”) to be paid into her personal bank account in May 2022. Ms Ho accepted that she was not entitled to the Fiat Asset and expressly accepted that she held it on trust for ByBit, though she had not taken steps to return it. ByBit interviewed Ms Ho on 29 September 2022 and 4 October 2022. During these meetings, Ms Ho initially claimed she could not recall the details of the Anomalous Transactions. Later, she asserted that the Wallets associated with the four Addresses belonged to her maternal cousin, Mr Jason Teo (“Jason”), and that she did not have access to them. She also claimed that Jason proposed she assist in transferring cryptocurrency and that she had surveillance footage showing Jason carrying out the Anomalous Transactions at her house. She indicated a preference for a police report and, after the interviews, ceased contact and failed to attend follow-up interviews.
ByBit commenced proceedings on 12 October 2022 and obtained interim relief, including a worldwide freezing order and proprietary injunctions over the USDT in the four Addresses and the Fiat Asset in Ms Ho’s bank account. Ms Ho was served personally with the originating claim and orders on 18 October 2022. Subsequently, Ms Ho disclosed by affidavit that the Wallets associated with the four Addresses were owned by Jason and averred she lacked access. The extract provided does not include the remainder of the evidential contest, but the procedural posture indicates that ByBit then pursued summary judgment, seeking final proprietary declarations on the basis of constructive trust.
What Were the Key Legal Issues?
The High Court identified two principal issues for determination. First, the court had to decide whether USDT is property capable of being held on trust. This required the court to address the legal nature of cryptoassets in property law terms, including whether USDT could be classified as a “thing in action” (chose in action) or whether it was a novel intangible property requiring a different conceptual framework.
Second, the court had to decide whether ByBit was entitled to summary judgment. Summary judgment in Singapore requires the claimant to show that there is no real prospect of successfully defending the claim (or, in the language used in many common law jurisdictions, that the defence is not arguable). In this case, the summary judgment application depended on whether ByBit could establish, on the evidence, the elements necessary for the declarations sought—particularly the existence of a trust relationship and the proprietary nature of the assets.
Underlying both issues was a trust-law question: if USDT is property capable of being held on trust, what type of constructive trust applies. The court’s final reasoning, as reflected in the extract, indicates that it treated the case as one for an institutional constructive trust, meaning the trust arises automatically by operation of law upon the relevant facts, rather than being imposed later as a remedial response.
How Did the Court Analyse the Issues?
The court began by framing the cryptoasset at the centre of the dispute. USDT is a stablecoin: its issuer represents that each stablecoin is backed by equivalent value in fiat currency or reserves, and verified holders have a contractual right to redeem USDT for US dollars. This linkage to fiat currency and the existence of contractual redemption rights made USDT resemble traditional intangibles. However, the court emphasised that the classification did not depend solely on redemption rights. The key question was whether USDT could be treated as property for trust purposes.
On the first issue, the court held that USDT, despite being transferable cryptographically without assistance from the legal system, is a chose in action. The court’s reasoning reflects a pragmatic approach: it accepted that cryptoassets are not “things” in the physical sense, but they can still be property because they embody enforceable rights or interests recognised by law. The court acknowledged that USDT’s redemption feature makes it “look more like” traditionally recognised choses in action, but it did not treat that feature as necessary. In other words, even without focusing on redemption, USDT could still be held on trust because it is capable of being the subject matter of equitable proprietary relief.
Crucially, the court distinguished between the threshold approach used at interlocutory stages (where courts often grant injunctions upon a “serious question” or “good arguable case” that cryptoassets are property) and the higher threshold required for final declarations. For final relief, the court must decide definitively that the cryptoasset is property capable of being held on trust. The court therefore moved from provisional recognition to a conclusive legal classification.
Having established that USDT is capable of being held on trust, the court turned to the trust framework. The extract indicates that the court found ByBit’s case for institutional constructive trust to be made out. Institutional constructive trusts are imposed by operation of law where the defendant’s conscience is affected by wrongdoing, such as breach of fiduciary or employment-related duties coupled with misappropriation of property. The court’s approach suggests that Ms Ho’s role and access were central: she was responsible for updating the Cryptocurrency Excel Files and was the only person with access to the relevant spreadsheet information, subject to approval by her superior. The Anomalous Transactions, the use of Addresses that were linked to Ms Ho’s email activity, and the unexplained diversion of funds supported the inference of wrongdoing.
On summary judgment, the court’s reasoning indicates that ByBit’s evidence was sufficiently strong to eliminate any realistic prospect of defence. The court accepted that Ms Ho’s initial explanations (inadvertent mistakes or technical errors) did not withstand scrutiny. The denial by a supposed recipient, the email trails showing Ms Ho’s work and personal email involvement with the Addresses, and the deletion and recovery of those emails undermined Ms Ho’s later narrative that the Addresses belonged to her cousin and that she lacked access. While the extract does not reproduce the full evidential analysis, the court’s conclusion that summary judgment was appropriate implies that the defence did not raise a triable issue on the essential elements of the constructive trust claim.
The court also dealt with the relationship between the cryptoasset and the proprietary relief sought. ByBit sought declarations that Ms Ho held both USDT and the fiat proceeds on trust, and sought return of the assets or traceable proceeds, or payment of an equivalent sum. The court’s classification of USDT as a chose in action enabled the proprietary trust claim to proceed in a manner analogous to claims over other intangible assets. The court’s reasoning therefore supports the view that equitable proprietary remedies can attach to cryptoassets where the legal requirements for trust and tracing are satisfied.
What Was the Outcome?
The High Court granted summary judgment in favour of ByBit against Ms Ho. It declared that Ms Ho held the USDT transferred into the four Addresses and the related fiat proceeds on trust for ByBit. The court’s declarations were made on the basis of an institutional constructive trust, reflecting that the trust arose by operation of law from the wrongdoing established on the evidence.
Practically, the decision strengthens ByBit’s ability to obtain final proprietary relief over cryptoassets and to pursue recovery of the misappropriated value. It also confirms that, at least in the context of USDT, Singapore courts will treat stablecoins as property capable of being held on trust, enabling claimants to seek final equitable declarations rather than being confined to interlocutory injunctions.
Why Does This Case Matter?
This decision is significant because it addresses, at the final merits stage, the property classification of a widely used stablecoin. Many earlier cryptoasset cases in common law jurisdictions have focused on interlocutory relief, where courts often avoid definitive classification and instead grant injunctions on the basis of arguability. Here, the High Court made a definitive finding that USDT is property capable of being held on trust and classified it as a chose in action. This is a meaningful step for litigants seeking final proprietary remedies over cryptoassets in Singapore.
From a trust-law perspective, the case also clarifies that institutional constructive trusts can be used to frame proprietary claims over cryptoassets. For practitioners, this matters because institutional constructive trusts can support declarations and proprietary tracing without requiring the court to impose a trust as a discretionary remedial measure. The court’s approach therefore provides a doctrinally coherent pathway for claims involving misappropriation of cryptoassets by persons in positions of trust or employment.
Procedurally, the grant of summary judgment indicates that where the evidence is compelling—such as where the defendant’s access, internal control, and digital footprints (including email trails and deletion/recovery of communications) align with the misappropriation—courts may be willing to grant final declarations without a full trial. This can affect litigation strategy for cryptoasset disputes, including the structuring of evidence and the choice between interlocutory injunctions and final proprietary relief.
Legislation Referenced
- Not specified in the provided extract.
Cases Cited
- Not specified in the provided extract.
Source Documents
This article analyses [2023] SGHC 199 for legal research and educational purposes. It does not constitute legal advice. Readers should consult the full judgment for the Court's complete reasoning.