A former China Construction Bank (Asia) relationship manager has been sentenced to four years in prison after accepting more than $470,000 in Tether to authenticate forged financial documents valued at more than $1.6 billion.
Lam Chun-yin, 32, pleaded guilty to conspiring to accept bribes in connection with false standby letters of credit and collateral documents linked to insurance-related investment transactions. The District Court also ordered him to repay about HK$3.7 million, equivalent to the cryptocurrency bribes he received.
The case highlights how stablecoins can intersect with traditional financial fraud, particularly when criminals use digital assets to move illicit payments outside conventional banking channels.
The Vesttoo Connection
The documents were connected to Vesttoo, a fintech platform that facilitated insurance-linked investment transactions. Investors on the platform were required to provide bank-issued standby letters of credit as collateral.
According to Hong Kong authorities, Lam worked in retail banking and lacked authorization to process commercial credit facilities or issue letters of credit.
Investigators found that Lam nevertheless presented himself as a CCB contact responsible for verifying the documents. Between April and June 2022, he accepted Tether payments while authenticating documents that purported to carry CCB authorization.
The alleged scheme involved:
- Multiple forged standby letters of credit
- Two false collateral letters
- Documents carrying a combined stated value above $1.6 billion
- More than $470,000 in Tether payments
Bank Investigation Exposed the Fraud
The scheme came to light after an internal investigation by CCB (Asia). The bank determined that neither it nor its affiliated companies had issued or endorsed the documents.
The Hong Kong Independent Commission Against Corruption later investigated the case. Authorities said the broader investigation also involved other individuals, with arrest warrants obtained for additional suspects.
Judge Ernest Lin Kam-hung said deterrent sentences remain necessary even for first-time offenders. The court also considered the wider impact of forged banking documents on confidence in Hong Kong’s financial system.
The conviction adds a criminal dimension to the wider Vesttoo collapse, which has generated litigation involving insurers, financial firms and other parties. It also underscores the risks created when fabricated traditional financial instruments gain apparent legitimacy through compromised banking channels.
