The GDPR consists of 99 articles and about ten are related blockchain technologies. Seven of the ten articles are to be implemented using conventional methods. Article 2 refers to the scope of the GDPR, namely the fully or partially automated processing of personal data. Article 5 sets out some principles for processing the data, such as the lawfulness and traceability of the processing, or that the data was collected for specified, explicit and legitimate purposes. Read More »

The current taiji-blockchain implementation is based on Kafka 2.6.0, and the transactions are persisted into a topic called taiji, which is partitioned. Each subchain is a partition and managed by a home bank. All ledger entries are written to the taiji topic in transactions so that the data is consistent across all partitions for debits and credits. For each partition, a corresponding service called chain-writer is responsible for safeguarding the particular partition. Read More »

One of the challenges for public blockchain is to protect user’s privacy. For peer to peer transactions, the from address, the to address as well as the amount are in clear text. It makes all transactions transparent and may not be suitable for business. For example, you might want to hide your service fee from other customers so that you can have more flexibility during negotiation. To do that you can ask the buyer to pay to your home bank with an instruction to redistribute the fund to your address. Read More »