Despite increasingly emerging applications, a primary concern for blockchain to be fully
practical is the inefficiency of data query. Direct queries on the blockchain take much time by …

Blockchain, as the underlying technique of cryptocurrency, has triggered a wave of
innovation in decentralized computing. Despite some research on blockchain data query, a …

Blockchains have recently been under the spotlight due to the boom of cryptocurrencies and
decentralized applications. There is an increasing demand for querying the data stored in a …

Blockchain has recently gained massive attention thanks to the success of cryptocurrencies
and decentralized applications. With immutability and tamper-resistance features, it can be …

The emergence of Blockchain has attracted widespread attention. However, we observe that
in practice, many applications on permissioned blockchains do not benefit from the …

Advanced Industrial Internet-of-Things (IIoT), such as smart grids, 5G-enabled unmanned
aerial vehicles (UAV), and supply chain 4. o, can be used to facilitate smart management …

Blockchain databases have attracted widespread attention but suffer from poor scalability
due to underlying non-scalable blockchains. While blockchain sharding is necessary for a …

Driven by various legal obligations and service requirements, the redactable blockchain was
introduced to balance the modifiability and immutability of blockchain technology. However …

Blockchain has been regarded as a trusted carrier for distributed data storage. With large
volumes of valuable data stored on blockchain, data query has become a major …

With the emergence of digital currencies, blockchain systems have been committed to the
efficient and trusted storage of data, building decentralized, tamper-proof, persistent, and …