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Brayden Lindrea6 hours agoBrazil’s CBDC pilot contains code that can freeze or reduce funds, dev claimsPedro Magalhães, a blockchain developer who claims to have reverse-engineered Brazil’s pilot CBDC has found code that would allow accounts to be frozen or drained at will.2502 Total views9 Total sharesListen to article 0:00NewsJoin us on social networksA blockchain developer who claims to have reverse-engineered the source code of Brazil’s pilot central bank digital currency (CBDC) has discovered functions in the code that would allow a central authority to freeze funds or reduce balances. 


He has since argued, however, that there might be situations that such functions could be beneficial.


On July 6, the source code of the digital Brazilian real pilot project was posted on GitHub portal by Brazil’s central bank. It was explained at the time that the pilot project is intended for use only in a test environment and that the “presented architecture” may be subject to additional changes.


Pedro Magalhães — a blockchain developer and founder of tech consulting firm Iora Labs — later that day claimed to have been able to “reverse engineer” the open source code of Banco Central do Brazil’s digital real, revealing functions in the code.


The functions included freezing and unfreezing accounts, increasing and decreasing balances, moving currency from one address to another, and creating or burning digital real from a specific address.6/ These resources can be executed by any entity that receives proper permissions from the controlling entity of the new system — i.e. the Central Bank.

Among the changes authorities could potentially make using these functions are, for example: pic.twitter.com/AT5v1rOQbK— Vini Barbosa (@vinibarbosabr) July 10, 2023


Magalhães told Cointelegraph that Brazil’s central bank would “probably” maintain these functions for secured loans and other financial operations based on decentralized finance (DeFi) protocols.


The problem, Magalhães explained, is that the code lacks specificity about the circumstances under which the tokens can be frozen and, above all, who holds the power to execute them:“One thing is to agree with an operation and execute a DeFi operation that involves different blockchains; another completely different thing is an institution having the ability to freeze the balance on its initiative, and that’s precisely how they’ve developed the smart contracts.”


These aspects should always be exposed in the smart contracts publicly and discussed with the population, which hasn’t been done yet,” he added.


Many in the cryptocurrency community have raised concerns that a CBDC has the potential to infringe on their financialfreedom and encroach on their privacy.11/ One of the purposes of publishing the pilot, as written in the project"s so-called “Onboarding Kit”, is to receive feedback — leaving all documentation subject to evolution or changes. And that"s exactly what developer Pedro Magalhães did: he provided feedback.— Vini Barbosa (@vinibarbosabr) July 10, 2023


In a July 10 post, Magalhães said while Brazilian’s concerns about a CBDC are understandable, it may offer some benefits.


He explained that taxes would be more easily traceable, enabling the public to inspect which resources tax funds are allocated to, in addition to inspecting purchases made by the state on-chain and strengthening transparency in parliamentary amendments.


Related:Visa, Microsoft and others join Brazilian CBDC pilot


In July 2022, Fabio Araujo, an economist at the Brazilian central bank, explained that the digital real has the potential to halt bank runs and looks to provide entrepreneurs with a more safe and reliable environment to innovate.


The digital real pilot is reportedly running on Hyperledger Besu — a privately operated Ethereum Virtual Machine (EVM)-compatible blockchain.


Because it isn’t permissionless like the Bitcoin or Ethereum mainnets, users will need the central bank’s approval to become a node, Magalhães stated on July 7.


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Magazine:Unstablecoins: Depegging, bank runs and other risks loom# Blockchain# Central Bank# Brazil# Open Source# Adoption# CODE# CBDCAdd reactionAdd reactionRelated NewsHistory of money: From fiat to crypto, explainedHow to use third-party ChatGPT pluginsRipple partners with Colombia’s central bank to explore blockchain technologyFear of a digital euro prompts Slovakia to add cash rule to constitutionEuropean Investment Bank taps blockchain for Climate Awareness BondRipple gets in-principle nod for digital asset services in Singapore

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