Banks in Chongqing and Hong Kong now have a shared way to check customer data across the border without the underlying documents ever leaving their home jurisdiction. Authorities in the two cities announced the Chongqing-Hong Kong Cross-boundary Data Validation Platform (CQ-HK DVP) on 14 October 2026, according to a Hong Kong Monetary Authority (HKMA) press release.
Platform Architecture and Operational Mechanics
The infrastructure operates without the cross-border transmission of raw data: underlying source documents and primary customer records remain strictly within their home jurisdiction. Instead, the platform uses distributed ledger technology to verify cryptographic hashes, ensuring recipient banks can authenticate customer submitted documentation against immutable on-chain proofs without transmitting the underlying records across borders. In practice, participating institutions confirm data veracity and integrity at source while satisfying domestic data residency and privacy mandates.
The cross-boundary pilot was developed collaboratively by the Hong Kong Monetary Authority (HKMA) and relevant Chongqing authorities, including the People’s Bank of China Chongqing Municipal Branch, the Hong Kong and Macao Affairs Office of the Chongqing Municipal People's Government, as well as the Office of the Financial Commission and the Office of the Cyberspace Affairs Commission of the CPC Chongqing Municipal Committee. Operational governance is divided between the two jurisdictions, with WeBank Technology Services Limited managing Hong Kong infrastructure operations and Chongqing Credit Co., Ltd overseeing the platform within Chongqing.
Banking first: account opening and loans
Finance is the main focus for now. The aim, the HKMA says, is to let customers in either city open an account, apply for a loan, or use other banking services; to make that possible, lenders on each side are developing checks on data moving in both directions, southbound and northbound.
HKMA Chief Executive Eddie Yue tied the launch to the Fintech 2030 strategy and the authority's aim to create new data infrastructure. He said the HKMA will keep improving the system while staying in close contact with Mainland authorities, the banking sector, and frontier technology companies, and he expects safer, more efficient data exchange between the two cities as a result.
Built on the Shenzhen model
The new platform copies a design that has already been tested. More than 10 banks have used its Shenzhen counterpart, the Shenzhen-Hong Kong Cross-boundary Data Validation Platform, across more than 10 business scenarios, from account opening to loans and remittances, and it has processed over 40,000 transactions, with data checked in both directions. The platform, linked to the HKMA's Commercial Data Interchange since April 2025, launched as a pilot in May 2024, and according to the HKMA, the technology and mechanism have held up well.
The launch supports a policy goal of an orderly flow of financial elements between Hong Kong and the Chinese Mainland. The HKMA notes that the Chief Executive's 2026 Policy Address lists the Chongqing mechanism among the steps towards it.
Why it matters
Cross-boundary customer checks can be hard to complete when the records a bank needs sit on the other side of the boundary. A model that verifies data without moving it lets banks confirm what a customer has told them while keeping the original records within their home jurisdiction. For compliance teams, that could mean faster know-your-customer checks on cross-border clients and stronger evidence to support account-opening and credit decisions.
A second city joining shows the Shenzhen design can be repeated, and it adds to broader work on Mainland and Hong Kong financial links, such as joint SFC and CSRC market measures and the HKMA's push to use technology to fight financial crime.
Read the full HKMA press release.
