Philippine government introduces document notarization on Polygon

Bank of Japan Publishes Results of CBDC PoCThe Bank of Japan (BoJ) recently concluded the second phase of its central bank digital currency (CBDC) proof of concept (PoC) project, which began in April. The results of this phase were published on Monday, and they shed light on key aspects such as the comparison between account-based and token-based CBDCs and the management of holding limits for users with multiple accounts.Photo by Manuel Cosentino on UnsplashToken-based CBDCsThe experiments conducted by the central bank covered a wide range of topics. Among the most intriguing findings were the advantages and disadvantages of token-based CBDCs and how to effectively impose holding limits for users with multiple CBDC balances.Token-based CBDCs have garnered interest from various central banks, with some adopting the UTXO token model used by Bitcoin without the use of a distributed ledger. A UTXO or unspent transaction output, defines where a blockchain transaction starts and finishes. The Bank of Japan explored this model and analyzed its pros and cons.In the initial proof of concept, both account-based and token-based CBDCs were examined, considering scenarios where the central bank managed the ledger or shared it with intermediaries like banks. In the token-based model, fixed token denominations were used, similar to physical cash in countries like India, and a centralized ledger was employed. However, in the recent phase, the central bank utilized flexible value tokens similar to UTXO and shared ledger functions with intermediaries.The Bank of Japan favored the flexible value token model due to its ability to handle multiple requests simultaneously. However, it acknowledged that this model may require more technical resources compared to the account-based approach. Challenges may arise when implementing additional functions, such as holding limits, while maintaining optimal performance. The European Central Bank (ECB) also noted in a recent report that most payment providers are accustomed to account-based payments and would incur costs to adapt to token-based systems.Another significant aspect explored by the BoJ was how to impose holding limits when users have multiple CBDC balances through different intermediaries. The challenge lies in determining if the overall holding limit has been breached without compromising user privacy.Homomorphic encryptionOne possible solution discussed in the report is the use of homomorphic encryption, which enables computations to be performed on encrypted data without it first needing to be decrypted. That allows for the necessary checks without intermediaries accessing the specific data being checked. Although this solution may slightly increase processing time, it could introduce a higher risk of data inconsistencies.Alternatively, a simpler approach proposed by the central bank is to establish a per-account holding limit and a limit on the number of accounts a single user can hold, rather than imposing global limits. Ideally, users with multiple accounts would have a higher per-account holding limit compared to those with fewer accounts.Phase 3 underwayWith the next pilot phase already underway, the BoJ aims to test the end-to-end process flow and identify challenges related to integrating with external systems. Additionally, they are creating a CBDC Forum to gather input from the private sector, ensuring a collaborative approach to CBDC development.While investigation and research into CBDCs continues, the BoJ has said that it will make a final decision on CBDC implementation by 2026.

Korbit, Ewha-Chain Leverage NFTs to Promote Blockchain KnowledgeEwha-Chain, a blockchain study group at Ewha Womans University, recently tweeted that it has collaborated with Korbit, one of South Korea’s leading cryptocurrency exchanges, to hold an non-fungible token (NFT) airdrop event for college students, offering free ice cream as an incentive.Hands-on experienceThe event aims to introduce participants to the crypto exchange and provide hands-on experience with Web3 and blockchain technology, as well as showcasing the benefits of NFTs.To participate, students have to create a Korbit account using their email address and register for an Ice-Chain NFT by completing a Google Form. Korbit will distribute the NFTs on the afternoon of May 11, the day before the event.Free ice creamOn the day of the event, Ice-Chain NFT holders can visit the Ewha Womans University branch of the Ice Girl Cream Boy ice cream shop to spin a wheel and win either free ice cream or Korbit merchandise.According to Korean economic news media Paxetv, Kim Il-kwon, head of business development at Korbit, said that the Ice-Chain event strives to familiarize university students with blockchain technology and promote the Korbit brand. Kim added that Korbit is dedicated to ongoing cooperation with Ewha-Chain and expanding channels to engage with millennials and Generation Z.Photo by ROMAN ODINTSOV on Pexels

On Thursday, South Korea’s Personal Information Protection Committee (PIPC) launched an investigation into Worldcoin’s personal data collection, processing and potential overseas transfer of sensitive personal data, the PIPC announced today via its official website. This comes after a number of complaints were filed against Worldcoin for its data collection practices.  Sam Altman’s crypto project Worldcoin gathers people’s personal data who signed up to have their irises scanned by “orbs” devices, which are currently installed in about 10 locations in Korea, including Yeouido, Pangyo and Apgujeong. The project started with the aim of distributing universal basic income to people whose jobs will be potentially replaced by artificial general intelligence (AGI) in the future. Photo by Colin Lloyd on UnsplashThe PIPC said the regulators will examine if any local privacy law has been violated by Worldcoin, and take further action in line with the Personal Information Protection Act. Following the launch of the investigation on Feb. 29, Worldcoin has withdrawn six orbs devices in Korea and stopped accepting new members. It has also suspended the distribution of the Worldcoin token (WLD) to members who have already signed up, media outlet Chosun Biz reported.  Free crypto tokens in exchange for personal data For individuals who have their irises scanned, Worldcoin rewards three WLD tokens every two weeks, which are worth approximately $22.5 (KRW 30,000) at the time of writing. The price of WLD has soared by nearly ten-fold from about KRW 1,300 last year to over KRW 13,000 today, according to the data from the local crypto exchange Bithumb. This price surge followed OpenAI’s launch of a text-to-video AI tool, Sora. The current circulating supply of WLD stands at around 100 million tokens. According to Worldcoin’s white paper, the WLD’s total supply cap will remain fixed at 10 billion tokens during the first 15 years following its launch.  The data collected from the eyeball scanning is shared on the Worldcoin blockchain, which is protected by the zero-knowledge proof technology that prevents the data from being tracked or shared with other applications. The personal data remaining in the orbs devices is deleted.  Ongoing overseas investigation on Worldcoin South Korea is not the only country that is examining Worldcoin’s personal data collection practices. The project’s processing of information has raised concerns in other jurisdictions as well, including the U.K., France, Argentina and Kenya. In the U.S., the issuance of WLD tokens has been banned by the country’s authority.