Nigeria has made efforts to address corruption and bureaucratic challenges in exporting through various initiatives and reforms. Some of these initiatives and reforms include:

1. Establishment of the Nigerian Export Promotion Council (NEPC): The NEPC is responsible for coordinating and promoting non-oil exports in Nigeria. It provides training and market information to exporters, as well as advocacy and policy support to the government.

2. Implementation of Electronic Platform for Export Processing (e-Form): This platform by the NEPC has made the process of filing export documentation less cumbersome, transparent and less susceptible to corruption.

3. Adoption of National Single Window for Trade (NSW): The NSW is a platform that integrates all trade-related agencies in Nigeria, including customs, immigration, and standards organizations. This initiative has streamlined the export process and reduced the opportunities for bribery and extortion.

4. Anti-corruption agencies: The Economic and Financial Crimes Commission (EFCC) and Independent Corrupt Practices and Other Related Offences Commission (ICPC) implement and enforce anti-corruption and anti-bribery laws which deters government officials from engaging in corrupt practices.

5. Presidential Enabling Business Environment Council (PEBEC): This Council, established in 2016, is focused on improving the ease of doing business in Nigeria. They have implemented various reforms such as reduction in the time required to register a business.

These initiatives have helped to improve the business environment and reduce corruption and bureaucratic challenges in exporting in Nigeria.

Nigeria addresses corruption and bureaucratic challenges in exporting through:

1. Automation: Implementing digital solutions to reduce human interaction and streamline processes.

2. Single Window Platform: A centralized online platform for trade facilitation and clearance.

3. Trade Facilitation Agreement: Implementation of the World Trade Organization's Trade Facilitation Agreement to simplify and speed up customs procedures.

4. Anti-Corruption Initiatives: Efforts by the Nigerian government to combat corruption, such as the Economic and Financial Crimes Commission (EFCC) and the Independent Corrupt Practices Commission (ICPC).

5. Exporters' Support: Providing training, capacity building, and support for exporters to navigate the export process.

6. Regulatory Reforms: Ongoing efforts to simplify and clarify regulations, reducing bureaucratic hurdles.

7. Public-Private Dialogue: Regular engagement between government agencies, exporters, and other stakeholders to address challenges and improve the export environment.

8. Digitalization of Documents: Electronic certificates of origin, invoices, and other documents to reduce paperwork and increase efficiency.

9. Trade Policy Reforms: Efforts to simplify and harmonize trade policies, reducing complexity and uncertainty.

10. Whistleblower Protection: Mechanisms for reporting and addressing corruption, protecting those who speak out against malpractices.

These initiatives aim to enhance the ease of doing business, reduce corruption, and increase the efficiency of Nigeria's export processes.