A extensão do território brasileiro, combinado com sua demografia de mais de 200 milhões de habitantes, resulta em um sistema cartorário complexo, caro e lento. Tecnologias de blockchain podem ser de grande ajuda neste cenário. Elas nos provêm uma maneira distribuída de armazenar e validar dados em uma rede peer-to-peer descentralizada. Neste artigo, nós começamos a discussão sobre um sistema notarial nacional baseado em blockchain capaz de armazenar e validar registros públicos de pessoas naturais. Nós prototipamos uma solução que engloba os documentos de nascimento, casamento, divórcio e óbito. Ao final, são apresentados os custos operacionais do protótipo junto de uma comparação com o sistema cartorário utilizado atualmente.
The great extension of Brazil's territory, combined with its demographics of more than 200 million inhabitants, results in a complex, slow and expensive notary system. Blockchain technologies can be of huge help in this scenario. It provides a decentralized peer-to-peer way of storing and validating documents. In this article, we start the discussion about a blockchain-based national notary system with means to store and validate the natural person's public documents. We prototype a solution, comprising of birth, marriage, divorce, and death documents/certificates. In the end, we present a comparison between the operational costs of the implemented prototype and the current notary system.
The popularity of blockchains has been steadily rising since its inception in 2009. Its original focus was the creation of a distributed trustless system for a digital currency. Bitcoin was the first widely used blockchain. However, many more have been further created: Ethereum, Solana, Hyperledger Fabric, to name a few. Due to it, blockchain networks and its properties are being scrutinised by data scientists. This topic is known as blockchain analysis. However, analysis ́ tasks are hard to be accomplished over multiple blockchains. Even though most have similar concepts, each one has its own data modeled differently. As a consequence, scientists end up needing to do rework in order to apply similar analytics and algorithms in more than one blockchain network. In fact, blockchain data modeling is an open issue. This master’s thesis aims at proposing an unified model for blockchain data. For the best of our knowledge, there is no similar work in the literature.
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