Digital identity and conditional-payment controls

Digital identity and conditional-payment systems can make eligibility, authentication, compliance and transaction rules more granular and automated. They can support inclusion, fraud prevention and efficient public payments. They can also enable exclusion, surveillance or targeted restriction where law, governance and system design permit. The technology is enabling infrastructure. No documented case in the source set establishes its deployment as a coercive statecraft campaign.

Identity, payment and money

Five layers must remain separate. Identity proofing establishes attributes or legal identity. Authentication checks that a user or credential is genuine. Authorisation decides what the user may do. Payment infrastructure moves value. The monetary layer defines the liability being transferred.

A condition can attach to a payment instruction, wallet, merchant category or asset without altering the monetary unit. This is a conditional payment, not necessarily programmable money. Existing account-based finance already supports sanctions screening, benefit eligibility, direct debits, escrow, merchant restrictions and account freezes. Digital currency may change the speed, allocation or precision of those controls, but it does not invent them.

Digital identity also need not require one central biometric database. Systems may be centralised, federated or based on user-held credentials and selective disclosure. Architecture determines what is revealed, to whom and for how long.

Control points and roles

An identity authority governs enrolment, assurance levels and credentials. A central bank or public issuer defines the monetary liability and core scheme, but may not identify users or hold transaction-level data. Banks and payment providers onboard customers, authenticate instructions and conduct compliance checks. A separate rules provider may set eligibility or conditional-payment logic.

The critical questions are who holds identity and transaction data, who can link them, what law authorises access, who can block or override a rule, whether offline and fallback options exist, and how users can correct errors or appeal. Traceability does not imply that every record is centrally visible. Capability in code does not establish policy or use.

Declared designs

The People's Bank of China describes e-CNY as a two-tier system with tiered wallets and managed anonymity. Those documents establish the PBOC's intended design and stated safeguards, not an independent finding about privacy or implementation.

The European Central Bank states that a digital euro would not be programmable money, although payment-service providers could support conditional payments. The European Commission's 2023 proposal similarly permits conditional transactions while prohibiting programmable money. As at 29 July 2026, the ECB still described possible 2029 issuance as conditional on legislation being adopted during 2026. The proposal and design were not a live retail currency.

Project Rosalind tested application programming interfaces and conditional-payment use cases for a possible retail central-bank digital currency. It was a prototype, not a decision to issue or a production system. Proposal, prototype, pilot and deployment must be labelled separately.

Statecraft relevance and limits

Digital identity and payment rules could support sanctions compliance, targeted access restrictions, sovereign payment infrastructure or resilience. A statecraft classification would require a verified state direction, strategic target, objective and implemented effect. Domestic welfare conditionality, ordinary customer due diligence or a technical feature alone does not meet that threshold.

Stronger identity can widen access while excluding people who lack documents, connectivity, devices or stable biometrics. Privacy, inclusion and coercive effects therefore require user-level evidence, not inference from a system diagram or official design claim.

See also

[Tokenised deposits and distributed-ledger settlement](distributed-ledger-settlement-and-tokenised-deposit-systems.md) | [Cross-chain bridges and decentralised-finance protocols](cross-chain-bridges-and-defi-protocols.md)

Sources

1. World Bank Identification for Development, Principles on Identification for Sustainable Development, https://id4d.worldbank.org/guide/1-principles.
2. World Bank Identification for Development, Privacy and Security, https://id4d.worldbank.org/guide/privacy-security.
3. Financial Action Task Force, Guidance on Digital Identity (6 March 2020), https://www.fatf-gafi.org/en/publications/Financialinclusionandnpoissues/Digital-identity-guidance.html.
4. Organisation for Economic Co-operation and Development, Recommendation of the Council on the Governance of Digital Identity (2023), https://legalinstruments.oecd.org/en/instruments/OECD-LEGAL-0491.
5. People's Bank of China, Progress of Research and Development of E-CNY in China (July 2021), https://www.pbc.gov.cn/en/3688110/3688172/4157443/4293696/2021072014364791207.pdf.
6. Mu Changchun, People's Bank of China, Balancing Privacy and Security: Theory and Practice of the E-CNY's Managed Anonymity (2022), https://www.pbc.gov.cn/en/3935690/3935759/2025080817513024910/2022110110142226519.pdf.
7. European Central Bank, 'FAQs on the digital euro', updated 5 March 2026. https://www.ecb.europa.eu/euro/digital_euro/faqs/html/ecb.faq_digital_euro.en.html
8. European Commission, Proposal for a Regulation on the establishment of the digital euro, COM(2023) 369 final (28 June 2023), https://eur-lex.europa.eu/legal-content/EN/ALL/?uri=COM%3A2023%3A0369%3AFIN.
9. Bank for International Settlements Innovation Hub and Bank of England, Project Rosalind: building API prototypes for retail CBDC ecosystem innovation (16 June 2023), https://www.bis.org/publ/othp69.htm.
10. Bank for International Settlements, Blueprint for the future monetary system: improving the old, enabling the new, Annual Economic Report 2023, Chapter III, https://www.bis.org/publ/arpdf/ar2023e3.htm.
11. Organisation for Economic Co-operation and Development, Digital Public Infrastructure for Digital Governments (2024), https://www.oecd.org/content/dam/oecd/en/publications/reports/2024/12/digital-public-infrastructure-for-digital-governments_11fe17d9/ff525dc8-en.pdf.