Implementation Guide

0. Where the 20 Jurisdictions Stand (Status Baseline)

This guide draws on all 20 jurisdictions in the CBDC frameworks domain. Precise status classification matters: "launched" is not the same as "pilot," and a pilot is not the same as research, design, or an explicit decision not to issue. Of the 20 jurisdictions studied:

• Launched / live (6):
  Bahamas (Sand Dollar),
  Nigeria (eNaira),
  Jamaica (JAM-DEX), Eastern Caribbean (DCash — pilot concluded Jan 2024, successor suspended),
  China (e-CNY — pilot-scale, reclassified toward deposit money Jan 2026), and
  India (e₹ — pilot launched, not full-scale). Only the Bahamas, Nigeria, and Jamaica are nationwide live retail CBDCs with legal-tender status; China and India remain pilots operating at scale; the Eastern Caribbean's DCash is no longer operational.
• Active pilot, no launch decision (5):
  Brazil (Drex — restarted from scratch after the Hyperledger Besu platform was decommissioned 4 Nov 2025),
  South Korea (Project Hangang — paused mid-2025, Phase 2 resumed Mar 2026),
  Russia (Digital Ruble — narrow live budget use since 1 Jan 2026, legally mandated large-scale launch 1 Sep 2026),
  Singapore (live wholesale CBDC pilot, retail research only), and India's e₹ (counted under launched/live above as a pilot at scale).
• Wholesale-focused / completed-experimentation (Australia, Singapore, Thailand, South Africa):
  Australia (Project Acacia final report 18 May 2026 — research/pilot wCBDC issuance, not a live launch),
  Thailand (retail pilot concluded 2024, pivoted to a programmable-payment/stablecoin sandbox), and
  South Africa (Project Khokha PoCs only; SARB found "no compelling immediate need" for retail CBDC, Nov 2025).
• Research / design, decision pending (Japan, Sweden, UK, Ghana):
  Japan (decision expected 2026),
  Sweden (longest-running research programme; trajectory now tied to the digital euro),
  UK (design phase, decision expected later in 2026), and
  Ghana (pilot declared "completed" 22 May 2026, now designing wholesale/cross-border use).
• Advanced pre-issuance pilot, legislation pending (1):
  EU (Digital Euro — preparation phase concluded Oct 2025, Governing Council moved to next phase 30 Oct 2025; ECON Committee vote scheduled 23 Jun 2026).
• Scaled-down / contingency-planning (1):
  Canada (retail CBDC scaled down Sep 2024; wholesale work continues — Project Samara completed 5 Mar 2026; Stablecoin Act received Royal Assent 26 Mar 2026 but is not yet in force and expressly excludes CBDCs).
• Anti-CBDC / opposed (1):
  United States — the only major economy to formally bar federal CBDC development by executive action (EO 14178, in force). A statutory CBDC moratorium passed both chambers in differing forms but has not been enacted; only EO 14178 is binding. The stablecoin-first alternative rests on the GENIUS Act (S.1582, enacted as Public Law 119-27, 18 Jul 2025). Kevin Warsh was sworn in as Fed Chair on 22 May 2026 and reaffirmed opposition to a retail CBDC.

Recomputed aggregate (N=20): 6 launched/live (3 nationwide-live, 2 pilot-at-scale, 1 suspended); 1 anti-CBDC; 1 suspended successor (Eastern Caribbean DCash 2.0); the remaining 12 spread across active pilot, wholesale experimentation, research/design, and pre-issuance. No jurisdiction has yet achieved both a technically successful launch and meaningful retail adoption.

1. Implementation Models from Real Countries

Six distinct implementation models have emerged from the first generation of CBDC programs. Each carries different risk profiles, resource requirements, and lessons for governments planning new programs.

1.1 Fast-Track Model: Nigeria (≈9 months research to launch)

Nigeria's eNaira was launched on 25 October 2021 — Africa's first live CBDC and the second nationwide CBDC globally after the Bahamas. The Central Bank of Nigeria (CBN) relied on existing statutory authority under Section 19 of the Central Bank of Nigeria Act, 2007 (plus BOFIA 2020), rather than enacting standalone legislation. The Regulatory Guidelines on the eNaira took effect the same day as launch.

What happened: The eNaira launched without standalone legislation, without a proven user value proposition, and without adequate merchant infrastructure. The CBN then compounded the adoption problem in December 2022 by imposing cash withdrawal limits (N100,000/week for individuals) and a naira redesign policy explicitly designed to force digital adoption. The policy triggered a severe liquidity crisis and devastated the informal sector (≈65% of GDP). Protests and attacks on bank branches followed.

Outcome: 98.5% of eNaira wallets were inactive one year after launch (IMF Working Paper WP/23/104, May 2023 — self-reported, flag accordingly). Circulation reached only N18.31 billion (~$11.4 million) by February 2025 — 0.37% of currency in circulation; only ~2.2 million transactions had occurred by July 2024 for a 220-million population. By November 2025, CBN official Musa Itopa Jimoha publicly acknowledged at the "Cedi @ 60" conference that the eNaira was "not a rosy story" and that the CBN is shifting to a wholesale-CBDC focus. In parallel (Oct 2025 / Mar 2026), the CBN and Ministry of Finance formed a task force to study an official Nigerian stablecoin (cNGN, designed to complement not replace the eNaira), and on 31 March 2026 the CBN launched a VASP AML/CFT supervisory pilot whose six participants include cNGN — but not the eNaira.

Lesson: Speed without legal preparation, user research, or merchant infrastructure produces a CBDC that nobody uses. Coercive adoption strategies destroy trust and provoke backlash.

Sources:

• IMF, "Nigeria's eNaira, One Year After," WP/23/104, May 2023 -- Link
• Carnegie Endowment, "Why Nigeria's Controversial Naira Redesign Policy Hasn't Met Its Objectives," January 2024 -- Link
• CBN Regulatory Guidelines on the eNaira, October 2021 -- PDF

1.2 Deliberate Model: EU (2020 report to 2029+ possible launch)

The European Central Bank (ECB) began its CBDC investigation phase in October 2021, following a 2020 report on the digital euro. The ECB proceeded through investigation (October 2021 – October 2023) and preparation (November 2023 – October 2025). The preparation phase concluded in October 2025, and the Governing Council moved the project to the next phase on 30 October 2025 (focused on piloting, market engagement, and legislative support).

What happened: The European Commission tabled the Digital Euro Regulation (COM(2023) 369) on 28 June 2023 under Article 133 TFEU. The ECB developed the in-house N-XT settlement engine (centralised, UTXO data model — not DLT), drafted a scheme rulebook through multiple iterations (v0.8 generating ~2,000 comments; v0.9 released 31 July 2025), and announced framework agreements with EU-controlled service providers on 2 October 2025 (estimated EUR 432.1M, maximum EUR 1.164 billion). Six national central banks build the core settlement components internally.

The Council of the EU agreed its negotiating position on 19 December 2025 (endorsing both online and offline use). The European Parliament adopted amendments on 10 February 2026 endorsing both online and offline functionality (rejecting an offline-only approach), and the ECON Committee vote on the draft report is scheduled for 23 June 2026 (per the Legislative Train, updated 22 May 2026). On 5 March 2026 the Eurosystem opened a call for PSPs to participate in a pilot (deadline 14 May 2026; ~10–30 PSPs).

Outcome: If the EU adopts the Regulation during 2026, a 12-month pilot could run in H2 2027, with first issuance possible during 2029. The process has been thorough but slow. A key risk: 58% of European citizens consider themselves "unlikely or very unlikely" to use the digital euro (ECB survey, March 2025).

Lesson: A ~9-year timeline allows thorough preparation but risks losing relevance. Private-sector payment solutions (SEPA Instant, MiCA-regulated euro stablecoins) may fill the gap before the CBDC launches.

Sources:

• ECB, "Eurosystem moving to next phase of digital euro project," 30 October 2025 -- Link
• Council of the EU, "Single currency: Council agrees position," 19 December 2025 -- Link
• EUR-Lex, COM(2023) 369, 28 June 2023 -- Link

1.3 Phased Model: China (2014 research to large-scale pilot and 2026 reclassification)

China's e-CNY program built on research dating to 2014, with the PBOC Digital Currency Research Institute formally established in 2017. The pilot launched in April 2020 in four cities (Shenzhen, Suzhou, Chengdu, Xiong'an) and expanded methodically to 26–29+ cities across 17 provinces.

What happened: The PBOC developed a hybrid centralized/distributed architecture and integrated with Alipay and WeChat Pay as front-ends. By November 2025, cumulative transactions reached 3.48 billion worth CNY 16.7 trillion (~USD 2.37 trillion), with 2.25 billion wallets (multiple wallets per user). However, average transaction values declined from CNY 1,895 (2023) to CNY 428 (2025), suggesting shallow adoption.

A decade of development still left the e-CNY without explicit statutory authority — the draft amended PBOC Law (October 2020) remains unenacted (a "legal vacuum" formally raised in the National People's Congress in March 2025). Then the PBOC fundamentally pivoted: the "Action Plan for Strengthening Digital Yuan Management" (published 29 Dec 2025, effective 1 Jan 2026) reclassified e-CNY from M0/central-bank liability toward commercial-bank deposit liabilities, introduced interest at an initial 0.05% annual rate for verified wallets (Cat 1–3; first quarterly payout 20 Mar 2026), and integrated it into the reserve-requirement framework. PIIE analysts argued this meant "much of the e-CNY is no longer a CBDC." On 2 April 2026 the PBOC doubled its authorized-operator roster to 22 (adding 12 banks; the full list is not fully verified), read as a transition from pilot toward full-scale deployment.

Outcome: The world's largest CBDC experiment by volume, but with a mid-course correction that changed the currency's nature.

Lesson: Phased rollout allows learning, but even 10+ years of development may not solve the fundamental adoption challenge. Be prepared for design pivots — and recognise that operating a major CBDC without enacted legislation is a structural risk.

Sources:

• PBOC, "Progress of Research & Development of E-CNY in China" (White Paper), July 2021 -- PDF
• State Council of the PRC, December 29, 2025 -- Link
• PIIE, "China gives up on state-backed digital cash," 2026 -- Link

1.4 Cautious Model: UK (2023 consultation to design phase, no launch commitment)

The Bank of England (BoE) and HM Treasury published a joint consultation paper in February 2023, received over 50,000 responses, and entered a formal "design phase" in January 2024. As of March 2026, Deputy Governor Dave Ramsden confirmed the UK is "still in the design phase" with a decision on whether to proceed expected "this year."

What happened: The UK process has been shaped by sustained Parliamentary skepticism. The House of Lords Economic Affairs Committee (January 2022) found "no convincing case" for a CBDC. The House of Commons Treasury Committee (December 2023) called it "still a solution in search of a problem." Both demanded rigorous cost-benefit analysis, lower holding limits (closer to EUR 3,000 rather than the proposed GBP 10,000–20,000), and legislated privacy protections.

The BoE responded with extensive technical work: five design notes (October 2025, covering interoperability, product strategy, intermediary roles, offline payments, and the alias service), Financial Stability Paper No. 53 (10 November 2025, modeling deposit-flight scenarios), the Digital Pound Lab sandbox (August 2025), Project Rosalind (33 API functions), and collaboration with MIT DCI on privacy-enhancing technologies. The Government committed to enshrining privacy protections and a prohibition on government/central-bank programmability in primary legislation. Cross-border interoperability was explicitly excluded from the October 2025 design notes as "a separate topic."

Outcome: No draft legislation has been introduced. No launch commitment. The explicit possibility of concluding that a digital pound is not needed remains on the table. If approved in 2026, launch would be in the late 2020s at earliest.

Lesson: A "no decision" is a legitimate outcome. Parliamentary scrutiny forces rigorous justification and enhances public trust. Privacy must be legislated, not just designed.

Sources:

• Bank of England, "The digital pound: A new form of money for households and businesses?," 7 February 2023 -- Link
• Bank of England, Financial Stability Paper No. 53, 10 November 2025 -- Link
• The Register, "Bank of England says digital pound still in design phase," 5 March 2026 -- Link

1.5 Pivot Model: Brazil (4+ years DLT to platform restart)

Brazil's Banco Central do Brasil (BCB) began CBDC exploration in 2019 and launched the Drex (Digital Real) pilot in May 2023 on Hyperledger Besu, with 16 consortia drawn from 42 proposals (50+ companies).

What happened: Phase 1 (concluded February 2025) tested wholesale CBDC, tokenized deposits, and digital treasury bonds. The BCB found that privacy-enhancing technologies (Zether/JPMorgan, Starlight/EY, Rayls/Parfin, ZKP Nova/Microsoft, Hamsa) could not simultaneously satisfy banking-secrecy law (Complementary Law 105/2001), LGPD data protection (Law 13,709/2018), and BCB monetary/AML visibility — a "trilemma" of privacy, decentralization, and programmability. In August 2025, at Blockchain Rio, BCB president Gabriel Galípolo stated "the blockchain technology tested did not prove viable."

The pivot went further than previously documented: on 4 November 2025 the BCB told consortia it would shut down the Hyperledger Besu platform and rebuild "from scratch," and the Besu Drex platform was decommissioned on 10 November 2025. The project is not cancelled, but it is being rebuilt use-cases-first with the underlying technology yet to be selected; Phase 3 (collateral / lien reconciliation) is to begin in 2026, with no firm launch date (Galípolo said "not necessarily" for 2026).

Outcome: Four-plus years of DLT experimentation produced a platform restart and a narrowing of scope from "programmable money platform" to lien reconciliation and collateral management.

Lesson: Technology choices must be validated against legal constraints before committing to multi-year development. Privacy is not a feature — it is a prerequisite. Be willing to restart when evidence demands it.

Sources:

• Ledger Insights, "Brazil's DREX CBDC project pivots away from blockchain, tokenization," August 2025 -- Link
• BCB, Drex Phase 1 Report, February 2025 -- Link

1.6 Decline-to-Issue Model: United States, Canada, and South Africa

A sixth model — arguably the most consequential of this cycle — is the deliberate decision not to issue a retail CBDC, on grounds ranging from ideological opposition to a reasoned "no compelling need."

United States (anti-CBDC): The US is the only major economy to formally bar federal CBDC development. Executive Order 14178 (23 Jan 2025) bans all federal CBDC activity and revoked EO 14067 — EO 14178 is the only binding prohibition in force. A statutory ban has advanced but is not enacted: H.R. 1919 (Anti-CBDC Surveillance State Act) passed the House 219–210 on 17 July 2025; the 21st Century ROAD to Housing Act passed the Senate 89–10 on 12 March 2026 and the House (amended) 396–13 on 20 May 2026, each carrying a CBDC moratorium — but in differing, unreconciled forms, so no statute has been enacted. The operative strategy is stablecoin-first under the GENIUS Act (S.1582, enacted as Public Law 119-27, 18 Jul 2025). Kevin Warsh was sworn in as Fed Chair on 22 May 2026 (confirmed 54–45) and reaffirmed opposition to a retail CBDC.

Canada (scaled-down / contingency-planning): The Bank of Canada formally scaled down retail CBDC work on 24 September 2024 (Governor Macklem: "not currently a compelling case"), while continuing wholesale experimentation — Project Samara settled a CAD $100M tokenized bond with W-CAD on Hyperledger Fabric, completed 5 March 2026. The Stablecoin Act (Bill C-15) received Royal Assent on 26 March 2026 but is not yet in force, and expressly excludes CBDCs.

South Africa (reasoned no-need): SARB published a definitive Position Paper on the Necessity of a Retail CBDC on 27 November 2025, concluding that a retail CBDC is technically feasible but there is "no compelling immediate need"; priority is modernising payments (PayShap, NPS expansion, non-bank e-money). Wholesale work continues via Project Khokha 2x (PK2x), building on Project Khokha 1 and Khokha 2.

Lesson: "Not launching a CBDC" can be the responsible decision. The US case shows that political prohibition can foreclose the option entirely; the Canadian and South African cases show that a measured "no need now" can be reached on the evidence, with the door left open for wholesale work and future re-evaluation.

Sources:

• White House, Executive Order 14178, 23 January 2025 -- Link
• SARB, Position Paper on the Necessity of a Retail CBDC, 27 November 2025 -- Link
• Bank of Canada, Project Samara / W-CAD, March 2026 -- Link

2. Implementation Timeline Comparison

Key observation: No country has yet achieved both a technically successful launch and meaningful retail adoption. The countries that launched fastest (

Nigeria,

Bahamas,

Jamaica) have the lowest adoption. The countries with the most deliberate processes (

EU,

UK) have not yet launched, and several jurisdictions (

US,

Canada,

South Africa) have concluded that a retail CBDC is unnecessary or undesirable.

Sources: Individual country profiles as cited throughout this document; Atlantic Council CBDC Tracker -- Link

3. Phased Implementation Roadmap (Recommended)

Based on evidence from all 20 studied jurisdictions and IMF/BIS guidance, the following 5-year phased plan represents a recommended approach. It synthesizes lessons from programs that progressed (China's phased expansion, the EU's thorough preparation, Singapore's wholesale-first strategy) and those that did not (Nigeria's rushed launch, Eastern Caribbean's technical failure, Brazil's platform restart).

Year 0-1: Research and Design

Legal authority assessment

• Determine whether existing central bank legislation permits digital currency issuance. India's approach — amending one definition in the RBI Act, 1934 via Section 139 of the Finance Act, 2022 (and adding Section 22A) — demonstrates that targeted amendments can suffice. In contrast, the
  EU is enacting a new regulation (COM(2023) 369) under Article 133 TFEU.
• Assess whether the central bank has explicit authority to issue currency in digital form. Several jurisdictions lack it outright:
  Canada (Bank of Canada Act s.25 + Currency Act would both require amendment),
  Japan (BOJ Act assumes tangible banknotes; the MOF Expert Panel flagged BOJ Act/Criminal Code/Civil Code amendments),
  Sweden (the 2022 Sveriges Riksbank Act did not authorise issuance), and
  South Africa (SARB Act / Constitution s.225 would require amendment). China and India show the opposite risk: operating at scale while the enabling statute remains unenacted (China's draft PBOC Law) or thin (India's single-definition amendment with no standalone regulation).
• Evaluate data protection law compatibility. Brazil's experience shows that privacy requirements under data protection law (LGPD) can force a platform restart if not addressed from the outset.

Technology architecture selection

• Commission independent assessments of centralized vs. distributed ledger approaches.
  Brazil tested Hyperledger Besu for years before decommissioning it (Nov 2025) and rebuilding from scratch. The ECB built a centralized UTXO-based engine (N-XT, not DLT). China uses a hybrid approach.
  Jamaica deliberately chose a non-DLT centralized ledger (eCurrency DSC3).
  Australia's Project Acacia, by contrast, deliberately tested a multi-DLT design (Ethereum, Hedera, Redbelly, XRP Ledger, Canvas Connect) to keep future interoperability open.
• Evaluate whether existing payment infrastructure can be leveraged. India's retail layer intentionally does not use DLT, instead reusing UPI-style API libraries for scalability; Brazil designed Drex to integrate with Pix; Thailand benchmarks against PromptPay; Singapore wraps its instrument in Purpose-Bound Money over existing bank infrastructure.
• Key decision: token-based vs. account-based. India and the Bahamas chose token-based for retail;
  Nigeria chose account-based (centralized CBN ledger of all balances). Token-based offers stronger privacy properties; account-based simplifies KYC/AML but maximizes central-bank visibility (a key driver of Nigeria's surveillance criticism).
• Reference: BIS foundational principles report (October 2020) — three principles: (1) do not compromise monetary/financial stability; (2) coexist with existing money; (3) promote innovation and efficiency. Link

Stakeholder consultation

• The
  UK received over 50,000 responses to its February 2023 consultation — the largest CBDC public engagement globally. Major themes: cash access, privacy, spending control, government surveillance.
• The ECB's scheme rulebook v0.8 generated ~2,000 unique comments from market participants.
• China used industry working groups through the PBOC Digital Currency Research Institute and (as of April 2026) 22 authorized operator banks.
• Recommended stakeholders: commercial banks, payment service providers, consumer advocates, privacy organizations, parliament/legislature, merchants and merchant associations, rural/underbanked community representatives, technology sector.

Privacy and monetary policy impact analysis

• Commission a financial stability assessment before committing to design. The BoE's Financial Stability Paper No. 53 (November 2025) modeled scenarios at various holding limits; without limits, total banking-sector outflows could reach ~GBP 500 billion.
• The ECB modeled that at a EUR 3,000 holding limit, deposit outflow could reach ~EUR 699 billion (~8.2% of retail sight deposits), with an average 30 basis-point impact on banks' return on equity.
• Canada (SWP 2024-4) and
  Sweden (Riksbank: ~1–3% of GDP manageable) reached the same conclusion: holding limits are the primary safeguard against deposit crowding-out.
• Reference: IMF Fintech Note 2025/008, "Evaluating the Implications of CBDC for Financial Stability" -- PDF

International engagement

• Engage with BIS Innovation Hub projects for technical knowledge. The BIS has conducted 10+ CBDC projects (mBridge, Dunbar, Icebreaker, Helvetia, Tourbillon, Polaris, Sela, Aurum, Jura, Mariana, Agorá, Mandala). Note the geopolitical caveat: the BIS withdrew from mBridge in October 2024.
• Request IMF CBDC capacity-development assistance — over 40 countries have received such assistance since 2020 (IMF Policy Paper 2023/016). Link
• Participate in peer central-bank networks. The BIS 2024 survey found 91% of 93 central banks are exploring CBDCs. BIS Papers No. 159, August 2025 -- Link

Year 1-2: Legislation and Pilot Design

Draft and pass enabling legislation

• India's Finance Act 2022 (Section 139) amended the RBI Act definition of "bank note" to include "digital form" — a single definitional change (presidential assent 30 March 2022).
• The
  Bahamas enacted the Central Bank of The Bahamas Act, 2020 (Sand Dollar "equivalent in every respect to paper currency," full legal tender).
• Jamaica's Bank of Jamaica (Amendment) Act, 2022 (enacted 14 June 2022) was the first to formally designate a CBDC as legal tender by statute.
• Russia's Federal Law No. 340-FZ (signed 1 Aug 2023) is among the most legally-formalised programmes — the digital ruble is a "third form of the ruble" with a legally-mandated large-scale launch on 1 Sep 2026.
• The Eastern Caribbean required 2020 amendments to the ECCB Agreement plus implementing law in each of its 8 member legislatures — a multi-jurisdictional coordination burden single-nation issuers do not face.
• The
  UK Government committed to requiring primary legislation before any launch.
• Critical legislative elements: (1) legal-tender status, (2) privacy protections (UK committed to enshrining these), (3) prohibition on government programmability of spending (UK model), (4) holding-limit framework, (5) intermediary licensing regime, (6) data-protection alignment.

Technology vendor selection

• The ECB competitively procured 5 components (alias lookup, risk/fraud, app/SDK, offline, secure payment-information exchange) from EU-controlled entities, each with a second-ranked backup; framework agreements up to EUR 1.164 billion; 6 NCBs built core settlement internally.
• The
  Bahamas selected NZIA Limited (now Movmint) with IBM and Zynesis.
  Ghana selected Giesecke+Devrient.
  South Korea used LG CNS.
  Jamaica used eCurrency Mint (Ireland).
• Nigeria and the Eastern Caribbean both selected Bitt Inc. — a single-vendor dependency that became critical when DCash experienced a ~56-day outage (January–March 2022) from expired Hyperledger Fabric identity certificates.
• Recommendation: avoid single-vendor dependency; develop core infrastructure internally where possible (ECB model); use competitive procurement for peripheral components.

Pilot scope definition

• China started with 4 cities (April 2020) and expanded methodically. India started with 4 retail cities (Mumbai, New Delhi, Bengaluru, Bhubaneswar).
  South Korea's Project Hangang confined Phase 1 to ~80,000 users across Busan/Incheon.
• Define measurable success criteria before pilot launch. Nigeria failed to define exit criteria, leading to indefinite operation of a dormant system. Conversely,
  Thailand and
  Australia treated their retail/wholesale pilots explicitly as time-boxed research exercises and concluded without launching.

Intermediary framework design

• Two-tier distribution is the universal model: the central bank issues to intermediaries, which distribute to the public. No launched CBDC uses a direct central bank-to-citizen model.
• China: 22 authorized operators (as of April 2026). India: ~19 banks plus non-bank agents (PayNearby, Bankit) for rural reach. EU: banks, payment institutions, e-money institutions, and public entities (post offices). UK: Payment Interface Providers (PIPs) + External Service Interface Providers (ESIPs).
  South Korea and
  Russia route everything through existing commercial-bank mobile apps.

Year 2-3: Controlled Pilot

Limited pilot with selected banks/PSPs

• Start small and resist pressure to go nationwide before validating the core system. India's Closed User Group (CUG) approach (4 banks, 4 cities) is the model.
• Heed the Eastern Caribbean lesson: DCash went offline for ~56 days (January–March 2022) due to expired Hyperledger Fabric identity certificates. Certificate-management failure is a basic operational risk that must be eliminated before public deployment.

Gradual feature rollout

• Start with basic payments (P2P, P2M) and add complexity incrementally.
• China added offline NFC/Bluetooth, SIM-card wallets, smart contracts, and (from Jan 2026) interest-bearing verified wallets progressively.
• India added programmable e₹ (August 2024: fuel, groceries, education, healthcare, dining, travel), then offline NFC (officially launched at Global Fintech Fest, October 2025), then UPI QR interoperability.
• The EU plans offline as a core design feature from first issuance; Sweden tested an offline card ("shadow wallet," SEK 3,000 cap); Ghana and Japan both treat offline capability as central (disaster/connectivity resilience).

Public communication campaign

• Nigeria shows what not to do: launching without a clear value-proposition message, then attempting coercion.
• Jamaica's BOJ conducted merchant outreach and ambassador programs, but with only ~2,379 merchants registered by September 2024, efforts were insufficient.
• The
  Bahamas recruited "Sand Dollar Ambassadors" and committed B$1 million in giveaways, but adoption remained below 0.4% of cash.

Data collection and assessment

• Establish metrics beyond wallet downloads. Jamaica's ~282,000 registered wallets (end-2024) mask growth driven by existing users transacting more, not new acquisition.
• Nigeria had impressive wallet downloads but 98.5% inactivity — download counts are a misleading metric.
• Track: unique active users per month, transaction volume and value, merchant-acceptance density, geographic distribution, demographic penetration (unbanked vs. already-banked). South Korea's Phase 1 surfaced a cost-to-activity imbalance — each of 7 banks spent 5 billion won ($3.7M) for only 692.46 million won (~$515,000) in total transactions.

Year 3-4: Expanded Pilot

Geographic expansion

• China's model: phased city-by-city expansion, each phase informing the next. India expanded from 4 to 13 to 26+ cities.
• Expansion should be data-driven, not politically driven. Nigeria's nationwide launch without geographic phasing contributed to its adoption failure.

Additional intermediaries and use cases

• Jamaica suffered from a single wallet provider (NCB's Lynk) until JN Bank launched JN Pay in July 2025 — there were still only two public wallets at end-2025. Multiple providers at launch avoid bottlenecks.
• India's programmable welfare delivery is the strongest demonstrated use case for developing economies: Gujarat G-SAFAL, Andhra Pradesh DEEPAM 2.0, Odisha Subhadra Yojana, and the Puducherry PMGKAY food-currency pilot (launched 26 February 2026 via Canara Bank, targeting 80 crore / 800 million beneficiaries nationwide).
• South Korea's Phase 2 (resumed March 2026) anchors on a government-subsidy use case — EV-charging subsidies paid in deposit tokens, described as a world-first digital-currency national-treasury operation.

Stress testing

• The BoE modeled severe scenarios (75% outflow for uninsured deposits; ~GBP 500 billion total without limits). The ECB tested waterfall and reverse-waterfall mechanisms to enforce holding limits seamlessly.
• Reference: IMF Fintech Note 2024/003, "Cyber and Operational Resiliency of the CBDC Ecosystem" -- Link

Legislative refinement based on pilot data

• China's draft PBOC Law (October 2020) remains unenacted; the "legal vacuum" was raised in the NPC in March 2025 even as the e-CNY was reclassified toward deposit money in January 2026 — operating a major CBDC without enacted legislation is a structural risk.
• India operates under the Finance Act 2022 amendment but has no standalone CBDC regulation, no published intermediary licensing framework, and no formal privacy rules; the RBI has indicated formal regulations will follow pilot data.

Year 4-5: Decision Point and Possible Launch

Go/no-go decision based on pilot data

• The
  UK model explicitly allows the conclusion that a digital pound is not needed, reducing institutional bias toward launch.
• This cycle produced four documented "no/not-now" decisions worth studying:
  South Africa ("no compelling immediate need," Nov 2025 position paper),
  Canada (retail scaled down Sep 2024),
  Thailand (retail pilot concluded with no launch, pivot to programmable payments), and
  Australia (retail shelved for lack of a public-interest case). The Eastern Caribbean provides the case study in reversing a launch: the ECCB Monetary Council suspended DCash 2.0 development on 13 February 2026, prioritising a Fast Payment System and the CARICOM Payments and Settlement System (CAPS).
• Decision criteria should be set in advance: adoption rates vs. targets, financial-stability impact data, cost-benefit analysis, merchant-acceptance levels, and a competitive-landscape assessment (has the private sector already solved the problem?).

Full launch or scale-back

• The
  Bahamas launched nationwide in October 2020 and is now mandating commercial-bank Sand Dollar integration (two-year window, effective ~mid-2026) to address adoption failure. Mandatory bank participation may be necessary but should not be the starting strategy.
• If pilot data shows insufficient demand, consider: (a) pivoting to wholesale CBDC only (
  Nigeria's and
  Ghana's paths); (b) suspending and prioritising fast payment systems (Eastern Caribbean's path); (c) narrowing scope to specific use cases (
  Brazil's collateral-management focus); (d) continuing design work without a launch commitment (
  UK's approach); (e) pivoting to regulated stablecoins / deposit tokens (
  Thailand,
  South Korea,
  US).

Post-launch monitoring framework

• Monitor: deposit migration from commercial banks, monetary-policy transmission, financial-inclusion metrics (are unbanked populations actually being reached?), technology resilience, privacy compliance.
• India tracks e₹-R as a share of currency in circulation — and FY2025-26 produced the first reported circulation contraction (e₹-R fell ~24% YoY to ₹771.7 crore (~US$90M) at 31 March 2026, from ₹1,016.5 crore), a cautionary signal even pilots can regress (self-reported, RBI Annual Report 2025-26 — flag accordingly).
• China publishes cumulative aggregates (3.48 billion transactions, CNY 16.7 trillion by November 2025) but not average transaction values, which must be derived (CNY 428 in 2025, down from CNY 1,895 in 2023) — self-reported.

4. Common Failure Patterns (with Evidence)

4.1 Launching Before the Legal Framework is Ready

Nigeria: The eNaira launched in October 2021 under general statutory authority (Section 19 of the CBN Act, 2007). No standalone CBDC legislation passed the National Assembly; the Regulatory Guidelines were issued the same day as launch. Cambridge analysis (Journal of African Law) found the CBN "misapprehends the meaning and scope of informed consent to data processing."

China: After a decade of development and CNY 16.7 trillion in cumulative transactions, the e-CNY still lacks explicit statutory authority. The draft PBOC Law (October 2020) remains unenacted, and the "legal vacuum" was formally raised in the NPC in March 2025 — even as the January 2026 reclassification toward deposit money proceeded.

Contrast with Jamaica: The Bank of Jamaica (Amendment) Act, 2022 was passed by both houses and enacted before nationwide rollout — the first country to designate its CBDC as legal tender by statute.

Sources:

• Cambridge Core, "Assessing the Legal Status of the eNaira," 2023 -- Link

4.2 Single Vendor Dependency

Eastern Caribbean (DCash): The ECCB contracted Bitt Inc. as the sole technology provider. When the Hyperledger Fabric identity certificates expired on 14 January 2022, the entire DCash system went offline for ~56 days (restored 9 March 2022). The ECCB lacked internal capacity to diagnose or resolve the issue independently.

Contrast with the EU: The ECB selected different providers for each of 5 components, each with a second-ranked backup; core settlement was developed internally by 6 national central banks.

Source:

• Venafi, "Digital Currency Hit by Expired Certificate," 2022 -- Link

4.3 Coercing Adoption

Nigeria: The December 2022 naira redesign and cash-withdrawal limits were designed partly to force digital adoption. The policy created a severe cash shortage, devastated the informal sector (~65% of GDP), and triggered protests and bank attacks, deepening distrust.

Bahamas: The CBOB shifted from voluntary to mandatory commercial-bank participation in July 2024 (two-year window) after years of low adoption. Less aggressive than Nigeria, but still an acknowledgment that voluntary strategies failed.

Russia: The forthcoming 1 Sep 2026 large-scale launch is legally mandatory for systemically important banks and large retailers (>RUB 120M revenue) — a state-driven mandatory-adoption model whose long-run trust effects remain untested; CBR explicitly states settlements "do not provide for the anonymity of payments."

Sources:

• Carnegie Endowment, January 2024 -- Link
• Cornell University, "Nigeria's eNaira CBDC: What Went Wrong?," April 2023 -- Link

4.4 Over-Promising on Technology

Brazil: The BCB positioned Drex as a transformative programmable-money platform (smart contracts, tokenized assets, DeFi integration). After years of testing, it concluded that privacy-enhancing technologies (ZKPs from JPMorgan, EY, Parfin, Microsoft) could not simultaneously satisfy privacy law, banking secrecy, and regulatory visibility — a "trilemma." The Hyperledger Besu platform was decommissioned on 10 November 2025 and the project is being rebuilt from scratch with scope narrowed to collateral management.

China: The reverse failure — under-promising then quietly reclassifying. The January 2026 Action Plan moved e-CNY from a pure central-bank liability toward deposit money with interest, prompting PIIE to argue "much of the e-CNY is no longer a CBDC." Over a decade of "programmable but limited" framing ended in a fundamental change to the instrument's nature.

Source:

• CoinGeek, "Brazil's DREX CBDC pilot derailed by data privacy concerns," 2025 -- Link

4.5 Ignoring Existing Payment Infrastructure Competition

India: UPI processes billions of transactions monthly (~83% payment-volume share, 2024). Users see no compelling reason to use a separate e₹ wallet — and e₹-R circulation actually fell ~24% YoY in FY2025-26, the first reported contraction.

EU: 58% of Europeans consider themselves unlikely to use the digital euro (ECB survey, March 2025); SEPA Instant and card networks already function well.

Eastern Caribbean: The ECCB suspended DCash 2.0 partly because "commercial banks have expanded mobile banking platforms, and private digital wallets have increased their market presence."

Thailand, South Africa, Singapore, Canada: Each concluded a strong existing rail (PromptPay, PayShap, FAST/PayNow, Interac/RTR) reduces the marginal value of a retail CBDC, redirecting effort to wholesale work or programmable-payment/stablecoin sandboxes.

Sources:

• FTI Consulting, "The Future of Money or a Failing Experiment," September 2024 -- Link
• CoinTelegraph, "Europeans show little interest in digital euro," 2025 -- Link

4.6 Insufficient Merchant Adoption Strategy

Jamaica: Only ~2,379 merchants formally registered by September 2024 — a "nowhere to spend it" problem. As of March 2026, Governor Byles was still pushing banks to accelerate POS integration (JN Bank expected to be first DTI to retrofit POS machines by July 2026); the outgoing Governor called slow adoption "a disappointment" on 27 May 2026.

Bahamas: Only 455 actively processing merchants as of March 2023 in a country of ~400,000 — merchant density insufficient for everyday use despite ambassador and giveaway programs.

Contrast with India: By achieving UPI QR interoperability on e₹ wallets (HDFC, Axis, Kotak, SBI), India enabled payments at any of UPI's 300+ million merchant touchpoints without separate merchant onboarding — the most effective merchant strategy observed.

Sources:

• Silicon Caribe, "Bank of Jamaica Pushes Banks to Accelerate JAM-DEX Adoption," March 2, 2026 -- Link

5. Stakeholder Consultation Best Practices

5.1 Who to Consult

5.2 Consultation Methods

Public consultation (UK model): detailed consultation paper (February 2023), open ~5 months, full response to 50,000+ submissions (January 2024). Advantage: democratic legitimacy. Risk: volume can be dominated by organized campaigns.

Industry working groups (China, EU model): China's PBOC Digital Currency Research Institute + (as of April 2026) 22 authorized operators; the EU's Rulebook Development Group generated ~2,000 comments on v0.8. Advantage: deep technical engagement. Risk: may exclude non-industry stakeholders.

Consortium-based pilot (Brazil model): 16 consortia from 42 proposals (50+ companies including Microsoft, AWS, Chainlink, Visa, Mastercard). Advantage: distributed development burden. Risk: coordination complexity; may not represent end-user needs.

Parliamentary scrutiny (UK model): House of Lords Economic Affairs Committee (January 2022), House of Commons Treasury Committee (December 2023), and Government responses. Advantage: forces the central bank to justify the case publicly.

5.3 How to Handle Opposition

Privacy/surveillance concerns: Every jurisdiction faces these. The UK's approach is the most responsive: the Government agreed to enshrine privacy protections in primary legislation, prohibit government/central-bank programmability, and limit data use. By contrast, Russia (no anonymity "by design") and South Korea (BOK Governor Rhee: design "chose to improve compliance at the sacrifice of privacy") show how privacy trade-offs can fuel civil-society opposition.

Political opposition: In the

United States, opposition culminated in EO 14178 (in force) banning federal CBDC activity, with statutory moratoria advancing in differing, unreconciled forms (H.R. 1919; the ROAD to Housing Act) but not enacted. Brazil's Deputy Julia Zanatta introduced Bill 3341/2024 to require congressional approval for any state digital currency.

Bank opposition: EU banks have actively lobbied against the digital euro, fearing deposit outflows; investigative reporting (Follow the Money, 2025) documented lobbying to weaken or delay the regulation. The compensation model — merchant-fee caps — remains the key negotiation point. Engage banks early and honestly about the business model.

Sources:

• Follow the Money, "European banks are scared of the digital euro," 2025 -- Link
• UK Parliament Petition, "Prevent the introduction of any programmable CBDC" -- Link

6. Decision Matrix

This matrix maps country characteristics to recommended implementation approaches, based on observed evidence.

If your country has a strong existing digital payment system (e.g., India UPI, Brazil Pix, European SEPA Instant, Thailand PromptPay, South Africa PayShap, Singapore FAST/PayNow, Canada Interac):

Consider: Wholesale CBDC rather than retail, or narrow retail scope to specific use cases (offline payments, welfare delivery, cross-border).

Because: India's e₹-R contracted ~24% YoY in FY2025-26 alongside UPI; Brazil, Thailand, South Africa, Singapore, and Canada all redirected toward wholesale, programmable payments, or stablecoins after concluding retail payments were already well-served. IMF Fintech Note 2024/006 ("Positioning CBDC in the Payments Landscape"): "Countries with mature FPS may find retail CBDC less urgent."

If your country has a large unbanked population and limited existing payment infrastructure:

Consider: Retail CBDC with offline capability, simplified KYC, and welfare-delivery integration.

Because: India's programmable welfare delivery (Gujarat G-SAFAL; Puducherry PMGKAY targeting 800 million beneficiaries) is the strongest demonstrated CBDC use case for developing economies. Ghana's offline-first eCedi explicitly targets the ~47% lacking internet access (self-reported). The Bahamas designed offline capability for hurricane resilience.

If your country is an archipelagic or geographically dispersed small state:

Consider: Retail CBDC with strong offline capability and disaster resilience — but with realistic adoption expectations and a credible Plan B.

Because: The Bahamas and Eastern Caribbean both designed CBDCs for island communities; both struggled with adoption, and the Eastern Caribbean ultimately suspended DCash 2.0 in favor of a fast payment system.

If your country has strong data protection laws (e.g., EU GDPR, Brazil LGPD, South Korea PIPA):

Consider: Privacy-first architecture with offline payments providing cash-like anonymity for small values.

Because: Brazil's Drex was forced into a platform restart by the inability to satisfy LGPD on a DLT platform. The EU's digital euro uses a dual privacy model (cash-like offline, pseudonymised online) for GDPR compliance. South Korea's PIPA (amended Feb 2026, fines up to 10% of revenue) raises the stakes for any compliance shortfall.

If your country has a currency union with multiple member states:

Consider: Carefully evaluating whether a CBDC or a fast payment system better serves regional integration.

Because: The Eastern Caribbean's DCash was the world's first multi-national CBDC — and was suspended in February 2026; coordinating across 8 territories proved exceptionally complex. The ECCB concluded a Fast Payment System + CAPS would better serve the region. The euro area faces the same multi-jurisdictional coordination at far greater scale.

If your country faces political skepticism about CBDC:

Consider: Explicit parliamentary-accountability mechanisms and the option to conclude that a CBDC is not needed.

Because: The UK's model (both Houses scrutinised the case, demanded cost-benefit analysis, Government committed to primary legislation) provides democratic legitimacy. The US shows the extreme: sustained political opposition produced a binding executive ban (EO 14178) and advancing — though unreconciled — statutory moratoria, effectively foreclosing the option.

If your country is considering CBDC primarily for cross-border payments:

Consider: Participating in multilateral CBDC bridge projects rather than building domestic infrastructure first.

Because: BIS Innovation Hub projects (mBridge, Dunbar, Icebreaker, Jura, Agorá, Mandala) have demonstrated multi-CBDC platforms for cross-border efficiency. Singapore (Ubin+, Mariana, Agorá), Thailand and China (mBridge), India (Project Rialto, Project Mandala Phase 2), Japan and South Korea (Project Agorá) lead here. Note the geopolitical caveat: the BIS withdrew from mBridge in October 2024 over sanctions-circumvention concerns, and Russia's BRICS-Bridge ambitions remain largely conceptual.

7. Exit Criteria

7.1 When Should a CBDC Program Be Paused or Abandoned?

No CBDC implementation guide is complete without addressing failure. As of June 2026, multiple programs have been paused, suspended, scaled down, restarted, or explicitly declined: the Eastern Caribbean (DCash 2.0 suspended), Brazil (platform decommissioned and rebuilt), South Korea (paused then resumed), Canada (retail scaled down), Thailand and Australia (retail concluded without launch), South Africa (no compelling need), and the United States (federal ban). Several launched CBDCs (

Nigeria,

Bahamas,

Jamaica) show negligible adoption, and India's e₹-R recorded its first circulation contraction.

7.2 Eastern Caribbean DCash Suspension (February 2026): Case Study

Timeline:

• March 2021: DCash pilot launches across the ECCU territories
• 14 January 2022: System goes offline due to expired Hyperledger Fabric certificates
• 9 March 2022: Service restored after ~56 days
• 12 January 2024: Pilot officially closes (RFVI for DCash 2.0 issued December 2023)
• 13 February 2026: ECCB Monetary Council (112th Meeting) suspends DCash 2.0 development
• 4 May 2026: ECCB publishes the 112th-Meeting Communiqué formally confirming suspension and FPS/CAPS prioritization

Why the suspension happened:

1. The ~56-day outage in 2022 severely damaged user confidence
2. Private-sector digital payment solutions expanded, reducing perceived CBDC necessity
3. The ECCB concluded a regional fast payment system would achieve similar goals with lower risk
4. Multi-jurisdictional coordination across 8 territories proved exceptionally complex

Implications: The ECCB framed it as a prioritization decision, not permanent abandonment — but the practical effect is that the Eastern Caribbean has joined the growing set of jurisdictions that tested and declined to proceed with retail CBDC.

Source:

• Discover Montserrat, "ECCB Suspends DCash 2.0," February 16, 2026 -- Link

7.3 Metrics That Indicate Success vs. Failure

7.4 Political vs. Technical Reasons for Abandonment

Technical reasons (legitimate basis for pausing):

• Privacy technology cannot satisfy legal requirements (Brazil)
• Infrastructure reliability is insufficient for production (Eastern Caribbean)
• Scalability cannot meet population demands
• Security vulnerabilities identified during testing

Reasoned policy / "no compelling need" (legitimate decisions):

• Strong existing rails make retail CBDC marginal (South Africa, Canada, Thailand, Australia)
• High existing financial inclusion removes the inclusion rationale (Singapore, South Korea, Australia)

Political reasons (require careful analysis):

• Ideological opposition / statutory or executive bans (US — EO 14178 in force; advancing but unreconciled statutory moratoria)
• Bank lobbying pressure (EU)
• Public privacy concerns (UK consultation; South Korea civil society)
• Lack of a compelling use case (UK parliamentary assessment)

The distinction matters because technical failures can potentially be addressed with better technology, while reasoned-need and political outcomes may reflect genuine public or institutional preferences that should be respected.

7.5 Recommended Exit Framework

Establish in advance — before committing significant resources — the conditions under which the program would be paused:

1. Pilot adoption threshold: If, after 12 months of public pilot, active monthly users are below X% of target, trigger a formal review. (India and South Korea show that even sustained pilots can stall or regress.)
2. Cost-benefit checkpoint: At the end of each phase (research, design, pilot), conduct and publish a cost-benefit analysis. (South Korea's cost-to-activity imbalance is the cautionary data point.)
3. Technology viability gate: If the selected technology cannot meet privacy, security, or scalability requirements within the planned timeline, pause and reassess (Brazil's platform restart).
4. Competitive landscape review: If private-sector solutions substantially address the identified payment gaps, reassess the marginal value of CBDC (Eastern Caribbean, South Africa, Thailand, Canada).
5. Financial stability stress test: If modeled deposit outflows under stress exceed acceptable thresholds and cannot be mitigated by design safeguards (holding limits), recalibrate or pause.

Verification Notes

Sources Verified Through the Fact Matrix and Country Profiles

All factual claims, statistics, dates, and source URLs in this document are drawn from the canonical CBDC frameworks fact matrix and the per-jurisdiction country profiles, which were individually verified via web search and fetch during their compilation and refreshed for this cycle (June 2026). This is a refresh synthesis: no new web research was conducted; the fact matrix is the source of truth. Per-jurisdiction verification details are documented in the Verification Notes section of each country profile:

• China — PBOC publications, State Council press releases, PIIE; 22 operators (Apr 2026, full list not fully verified)
• EU — ECB press releases, EUR-Lex, Council/Parliament proceedings; ECON vote 23 Jun 2026
• UK — Bank of England publications, Parliamentary committee reports
• India — RBI Annual Report 2025-26 (e₹-R circulation figures self-reported)
• Brazil — BCB, Ledger Insights; Besu decommissioned 10 Nov 2025
• Bahamas,
  Jamaica,
  Nigeria, Eastern Caribbean — central-bank publications, IMF/HRF/Kansas City Fed (adoption and transaction figures self-reported by issuers/trackers)
• US — EO 14178 (in force); GENIUS Act (S.1582 / PL 119-27); statutory moratorium passed both chambers in differing forms, NOT enacted; Warsh sworn in 22 May 2026
• Canada — Bank of Canada (Project Samara, 5 Mar 2026); Stablecoin Act Royal Assent 26 Mar 2026 (not yet in force; excludes CBDCs)
• Australia — RBA/DFCRC Project Acacia final report 18 May 2026 (A$4.4m wCBDC; A$24bn/yr gains is a self-reported research estimate)
• Japan,
  Singapore,
  South Korea,
  Thailand — BOJ/MAS/BOK/BOT publications; wholesale-pilot and Project Agorá/Mandala figures self-reported
• Russia — CBR (pilot stats self-reported); large-scale launch 1 Sep 2026; budget use live 1 Jan 2026
• Sweden — Riksbank (ECB preparation phase concluded Oct 2025; trajectory tied to digital euro)
• Ghana — Bank of Ghana (pilot "completed" 22 May 2026; VASP Bill 2025 passed Dec 2025; eCedi not launched)
• South Africa — SARB Position Paper 27 Nov 2025; Project Khokha 1 / Khokha 2 / PK2x
• IMF, BIS — policy papers, Fintech Notes, Innovation Hub project pages

Items Flagged as Self-Reported or Not Verified

• Adoption and transaction figures (wallet counts, circulation, transaction volumes) for launched/pilot CBDCs are self-reported by issuing central banks or trackers and are flagged as such throughout (e.g., Nigeria, Bahamas, Jamaica, China, India, Russia, South Korea, Australia).
• China's "22 authorized operators" (Apr 2026) — full operator list not fully verified.
• India's FY2025-26 e₹-R circulation (₹771.7 crore, ~24% YoY decline) — self-reported via RBI Annual Report 2025-26.
• Future timeline projections (EU 2029 issuance; Russia 1 Sep 2026 launch; UK/Japan/Ghana 2026 decisions) are official-source estimates, not commitments.
• Comparative metrics across countries are drawn from different reporting dates and may not be precisely comparable.

Cross-References

• Technology design choices — for detailed comparison of UTXO, account-based, token-based, and DLT architectures
• Legal framework and authorization — for detailed analysis of CBDC legal bases across jurisdictions
• Privacy and data protection — for cross-jurisdictional CBDC privacy-model comparison
• Regulatory spectrum — for the full research→launch→discontinued spectrum across all 20 jurisdictions
• What works & what doesn't — for the evidence-based scorecard of design and deployment choices

---

Last updated: 2026-06-04