Blockchain Technology and Public Procurement Corruption

Background to the Study

Public procurement one of largest and most corruption-vulnerable channels of government expenditure in Sub-Saharan Africa accounting for up to 50% of government spending in region (Brookings 2023). In Nigeria specifically public procurement long been identified as primary conduit through which public resources diverted with 2021 Auditor-General report highlighting significant fraud within procurement processes (PPDC 2025). Transparency International Corruption Perceptions Index consistently ranked Nigeria among more corrupt countries globally: Nigeria scored 24 out of 100 in 2022 improving only marginally to 25 in 2023 and 26 in 2024 still placing country 140th out of 180 assessed (PPDC 2025; WAMAC 2025). Nigerian civil-society commentary continues to flag procurement alongside judiciary and security sector as one of most systemically corrupt areas of governance (WAMAC 2025).

Nigeria's principal legislative response to procurement corruption Public Procurement Act of 2007 established Bureau of Public Procurement and introduced competitive bidding requirements but implementation remained fragmented and inconsistently applied with continuing reports of tender manipulation contract-award interference and non-compliance with statutory guidelines. Electronic procurement platforms introduced in some Nigerian MDAs as partial digitisation response offering reduced transaction costs improved monitoring and better supplier integration yet e-procurement implementation in Nigeria remains fragmented and inconsistently adopted relative to more centralised regional systems such as Ghana's GHANEPS platform.

Blockchain technology — distributed cryptographically secured append-only ledger — proposed in emerging governance-technology literature as more structural remedy to procurement corruption than conventional e-procurement digitisation alone. Because blockchain records are by design tamper-evident and typically require distributed consensus to alter proponents argue technology can address specific agency problems enabling procurement corruption: information asymmetry between principals (public/oversight bodies) and agents (procurement officials) moral hazard in contract award and variation and adverse selection in supplier qualification. Blockchain-enabled functions proposed for procurement include immutable audit trails smart-contract-triggered payments conditional on verified milestones and open cryptographically verifiable tender records.

Early exploratory blockchain-procurement initiatives emerged across Africa: Rwanda's Irembo platform digitalised range of public services including elements of procurement; Gauteng Province in South Africa piloted Open Tender Process with blockchain-adjacent transparency features; and Nigeria Customs Service reported exploring blockchain applications to reduce fraud. However as of time of study blockchain-based procurement systems remain at exploratory pre-adoption stage in Nigeria rather than being operationally deployed at scale distinguishing study object from study of already-implemented technology: relevant question for Nigerian public procurement today not yet did blockchain reduce corruption but rather do transparency and digitisation mechanisms that blockchain would formalise — competitive auditable digitally recorded publicly disclosed procurement processes — show measurable association with lower corruption incidence and how ready and willing are procurement stakeholders to adopt blockchain specifically. Study addresses both strands: empirically tests corruption-reducing association of existing digital/transparency mechanisms (as proxy for mechanisms blockchain would formalise and strengthen) and separately assesses stakeholder perceptions of blockchain feasibility and potential in Lagos State public procurement system.

Statement of the Problem

Despite Public Procurement Act 2007 and successive anti-corruption reform efforts procurement remains one of most corruption-prone areas of Nigerian public administration. Blockchain technology attracted growing policy and academic attention as potential structural solution on theoretical basis that immutability and distributed-verification properties can reduce information asymmetries and monitoring gaps enabling corrupt practices. However three problems limit practical usefulness of literature for Nigerian policy.

First much existing blockchain-procurement literature including work specific to Nigeria and South Africa conceptual desktop or qualitative-interview based rather than quantitatively estimating association between digital/transparency mechanisms and corruption outcomes. Second because blockchain procurement systems not yet operationally deployed in Nigeria no direct empirical test of blockchain's effect on Nigerian procurement corruption currently possible; closest empirically testable proxy is relationship between existing digital and transparency mechanisms (e-procurement portals digital record-keeping competitive bidding external audit information disclosure) and corruption-incident experience among procurement stakeholders. Third stakeholder readiness — technical capacity awareness and willingness of procurement officers and contractors to adopt blockchain specifically — rarely assessed empirically for Nigerian context despite technical capacity and institutional resistance being repeatedly flagged as central barriers to blockchain adoption in African public administration. This creates gap: no firm-level or individual-level Nigerian study currently combines (i) quantitative test of whether existing digital-transparency mechanisms associated with reduced corruption-incident experience among procurement stakeholders and (ii) structured assessment of blockchain-specific awareness perceived usefulness and adoption readiness within single Nigerian procurement setting. This study addresses that combined gap using primary survey data from procurement officers contractors and auditors engaged with Lagos State MDAs.

Aim and Objectives of the Study

Aim is to examine relationship between digital transparency mechanisms and corruption incidence in public procurement and to assess perceived potential and adoption readiness of blockchain technology in Lagos State Nigeria.

·         Determine current level of digital-mechanism usage (e-procurement digital record-keeping competitive bidding external audit information disclosure) among sampled procurement stakeholders

·         Examine effect of digital-mechanism usage on probability that stakeholder personally experienced or observed corrupt procurement incident in preceding twelve months

·         Assess procurement stakeholders' awareness of and perceptions regarding potential of blockchain technology to reduce procurement corruption

·         Identify individual- and institutional-level characteristics that significantly predict corruption-incident experience alongside digital-mechanism usage

·         Draw policy-relevant conclusions on feasibility of blockchain adoption for public procurement reform in Lagos State

Research Questions

·         What is current level of digital-mechanism usage among sampled Lagos State procurement stakeholders?

·         Does digital-mechanism usage significantly reduce probability of experiencing corrupt procurement incident after controlling for other relevant characteristics?

·         What is level of awareness of and perceived support for blockchain adoption among procurement stakeholders?

·         Which individual- and institutional-level characteristics significantly predict corruption-incident experience?

Research Hypotheses

·         H01: Digital-mechanism usage (e-procurement platform use) has no statistically significant effect on probability of experiencing corrupt procurement incident.

·         H02: Institutional transparency and oversight mechanisms (external audit public information disclosure) have no statistically significant effect on corruption-incident experience.

·         H03: Individual-level characteristics (tenure role MDA level) have no statistically significant effect on corruption-incident experience.

Significance of the Study

Significant to several stakeholder groups. For Lagos State Bureau of Public Procurement and federal Bureau of Public Procurement findings offer empirical guidance on which existing digital and transparency mechanisms show strongest statistical association with reduced corruption-incident experience informing prioritisation of digitisation investment ahead of full blockchain rollout. For anti-corruption civil-society organisations such as PPDC and CISLAC study provides quantitative evidence to complement existing qualitative and index-based corruption assessments e.g. CPI. For technology policymakers considering blockchain pilots such as exploratory work reported at Nigeria Customs Service study readiness assessment identifies specific capacity and awareness gaps that would need to be addressed for successful pilot. For academic literature study contributes quantitative discrete-choice econometric complement to largely conceptual and qualitative existing literature on blockchain and African procurement corruption.

Scope of the Study

Delimited to procurement officers contractors and auditors who have engaged with Lagos State-level and Local Government-level MDA procurement processes within twelve months preceding data collection. Lagos State selected as study area given its status as Nigeria's largest sub-national public procurement market and its administrative capacity relative to many other states. Study examines existing digital and transparency mechanisms (e-procurement platform use digital record-keeping competitive bidding external audit information disclosure) as proxies for blockchain-relevant functionality alongside direct assessment of blockchain awareness and adoption-readiness perceptions; does not evaluate already-operational blockchain procurement system since none currently exists at scale in Nigeria.

Limitations of the Study

Central limitation because blockchain-based procurement systems not yet operationally deployed in Nigeria study cannot directly measure blockchain's realised effect on corruption; instead estimates association between existing digital/transparency mechanisms — building blocks blockchain would formalise — and corruption-incident experience and separately measures perceived readiness for blockchain specifically. Deliberate and clearly stated proxy strategy rather than design flaw but means conclusions about blockchain itself necessarily inferential rather than directly observed. Second self-reported corruption-incident data subject to social-desirability and recall bias particularly given sensitivity of topic; respondents may under-report incidents involving themselves. Third cross-sectional design does not permit causal inference; digital-mechanism usage may be correlated with unobserved institutional quality independently affecting corruption incidence. Fourth sample concentrated in Lagos State MDAs and may not generalise to states with lower administrative capacity or lower digital infrastructure penetration.

Operational Definition of Terms

Blockchain Technology: Distributed cryptographically secured append-only digital ledger in which records once validated by network consensus cannot be unilaterally altered by any single party.

Corruption-Incident Experience: Binary outcome indicating whether respondent personally experienced or directly observed corrupt practice e.g. bribery solicitation bid manipulation contract-award interference in most recent procurement engagement within preceding twelve months.

E-Procurement: Use of electronic/internet-based platforms for procurement functions such as tender advertisement bid submission and contract management.

Public Procurement: Process by which government MDAs acquire goods works and services using public funds governed in Nigeria by Public Procurement Act of 2007.

Principal-Agent Problem: Governance problem arising when agent e.g. procurement official acting on behalf of principal (public) has both greater information than principal and incentives that may diverge from principal's interest creating opportunities for corrupt behaviour.

Corruption Perceptions Index (CPI): Transparency International annual index scoring perceived public-sector corruption in 180 countries on scale 0 highly corrupt to 100 very clean.

Conclusion

Results show 26.9% respondents experienced or observed corrupt procurement incident in preceding twelve months. E-procurement platform use average marginal effect -12.0 percentage points p=0.021 public information disclosure -16.7 pp p=0.002 and external audit exposure -10.0 pp p=0.049 each significantly associated with lower corruption-incident experience while blockchain awareness itself not significant predictor theoretically consistent given technology's pre-implementation status. Perception data show stakeholders directionally receptive to blockchain's anti-corruption potential mean support for piloting 3.77/5.00 but perceive substantial institutional technical-capacity gap mean 2.31/5.00 and anticipate political/administrative resistance as primary adoption barrier mean 3.88/5.00 highest-scoring item. Study concludes transparency mechanisms blockchain would formalise already show measurable corruption-reducing association lending indirect empirical support to case for blockchain adoption while institutional capacity-building and political-economy management identified as first-order implementation risks. Policy recommendations include prioritising near-term expansion of e-procurement disclosure and audit coverage and phased capacity-building-led approach to any blockchain pilot.

Frequently Asked Questions (FAQs)

1. How corrupt is Nigerian public procurement?

Transparency International CPI scored Nigeria 24/100 in 2022 25 in 2023 26 in 2024 ranking 140th/180, procurement flagged by civil society and Auditor-General as primary conduit for diversion of public resources accounting for up to 50% government spending in region.

2. What did Lagos study find on corruption incidents?

26.9% of 290 procurement officers contractors auditors engaged with Lagos State MDAs experienced or observed corrupt incident in preceding twelve months based on self-reported survey.

3. Which digital mechanisms reduce corruption risk?

Logit model maximum likelihood: e-procurement platform use average marginal effect -12.0 pp p=0.021, public information disclosure -16.7 pp p=0.002, external audit -10.0 pp p=0.049 each significantly associated with lower corruption-incident experience controlling for other characteristics.

4. Does blockchain awareness reduce corruption now?

No blockchain awareness itself not significant predictor of incident experience — theoretically consistent since blockchain systems not yet operationally deployed in Nigeria, pre-implementation status.

5. How ready are stakeholders for blockchain?

Mean support for piloting 3.77/5.00 receptive to anti-corruption potential, but perceived technical-capacity gap 2.31/5.00 low, and anticipated political/administrative resistance 3.88/5.00 highest barrier.

6. Why use proxy strategy instead of measuring blockchain directly?

Because blockchain procurement not operationally deployed at scale in Nigeria direct measurement of its corruption effect infeasible; study tests building blocks blockchain would formalise — e-procurement digital records competitive bidding audit disclosure — as closest empirically testable proxy.

7. What theories underpin study?

Principal-agent theory and New Institutional Economics: blockchain tamper-evident distributed ledger reduces information asymmetry between principals (public/oversight) and agents (procurement officials) and moral hazard adverse selection.

8. What are policy recommendations?

Prioritise near-term expansion of e-procurement disclosure audit coverage which already show measurable association, and adopt phased capacity-building-led approach to blockchain pilot addressing institutional technical capacity and political-economy resistance first-order risks.

9. What are limitations?

Cannot directly measure blockchain effect inferential proxy strategy, self-reported corruption subject to social-desirability/recall under-reporting, cross-sectional not causal may correlate with unobserved institutional quality, Lagos sample may not generalise to lower-capacity states.

10. Where download full project?

Download complete project with logit model results, marginal effects and blockchain readiness battery from SCHOLARNESTHUB as publication-ready document.