Recent years have witnessed significant advancements in cross-chain technology.
However, the field faces two pressing challenges. On the one hand, hacks on cross-chain …

Blockchain has attracted significant attention in recent years due to its potential to
revolutionize various industries by providing trustlessness. To comprehensively examine …

This paper presents a systematic and comprehensive survey on blockchain interoperability,
where interoperability is defined as the ability of blockchains to flexibly transfer assets, share …

Various metaverse applications have entered our daily life and show a promising trend that
will occupy people's attention in the era of Web3. This makes interoperability across …

The prosperity of blockchain has spawned numerous blockchain-based platforms with
different structures and consensus mechanisms, further increasing the attention of …

Sidechain-based Cross-chain exchange protocols enable payers to exchange
cryptocurrencies among different blockchains via a sidechain. Many efforts, such as P2DEX …

Time-lock puzzles (TLP) are a cryptographic tool that allow one to encrypt a message into
the future, for a predetermined amount of time T. At present, we have only two constructions …

Currently there exist many blockchains with weak trust guarantees, limiting applications and
participation. Existing solutions to boost the trust using a stronger blockchain, eg, via …

Blockchain technology has emerged as a transformative force in various sectors, including
finance, healthcare, supply chains, and intellectual property management. Beyond Bitcoin's …

Blockchain technology has given rise to various blockchains, each with unique
characteristics and applications. However, these isolated and heterogeneous blockchains …