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Chamber of Deputies gains access to CPFs base on blockchain



Parliamentarians now have access to the database of the National Register of Individuals (CPF) on blockchain, the b-CPF. According to Cointelegraph Brasil, the Chamber of Deputies closed an agreement with the Social Security Technology and Information Company (Dataprev) to obtain information from the population.

The contract was published in the 98th edition of the Official Gazette of the Union, on Wednesday (26). Although the reason for the deal was not clear, it is estimated that the ecosystem will be used for internal public services for the benefit of the Public Administration.

Government accesses CPFs on blockchain

Supported by Article 24, item XVI, of Law 8,666 / 93, the contract with Dataprev requests the “provision of CPF data processing services by blockchain”.


The blockchain database offers secure consultations of the CPFs of the entire Brazilian population. In fact, b-CPF has already been used by some public institutions, such as the ministries of Health and Justice, the Federal Revenue Service and the National Institute of Colonization and Agrarian Reform.

The contract, signed in the amount of R $ 28,315.80, entered into force last week and will extend until May 17, 2022.

Technology utilities

Deputies can use the database to explore social information of the population, such as regional growth index. In this way, the research would serve as a basis for creating new laws.


The technology can also be used to assist with the 2021 Census, scheduled for this year, and for government programs.

In addition to the b-CPF, Dataprev also has a platform with data from the National Register of Legal Entities (CNPJ), the b-CNPJ.

Controversy surrounding privatization

Launched in 2018, Dataprev is the target of privatization speeches. Last year, the Bolsonaro government showed interest in selling the state “big tech”.


The expectation was that privatization would raise approximately R $ 93 million for the economy. In 2019 alone, the public institution showed revenue of R $ 1.6 billion.

However, the action was and still is widely criticized. It turns out that the public platform gathers and manages personal information for the entire Brazilian population.

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