The balance of transparency using blockchain technology and the need for confidentiality raises significant challenges for a system. A combination of technologies, such as zero-knowledge proof (ZKP) and blockchain, provides the capabilities to strengthen future digital transformation against...

Cryptocurrencies are marked by extreme price volatility, which is unmatched by most other tradable assets. This volatility attracts speculative traders eager for quick profits, yet it poses significant risks to casual investors, who may face substantial losses overnight. Various interrelated...

A utility token is a digital asset that grants holders the right to access specific products or services within a blockchain-based system, functioning primarily as a means to facilitate interactions within that system (e.g., obtaining discounts or accessing features of an application). Utility...

This chapter presents the transparency inherent to blockchain networks as a two-sided sword. On the one hand, transparency enhances trust by allowing any participant in the blockchain network to verify transaction authorization and processing. On the other hand, the replication of data and...

In this chapter, we consider the roles of tokens and distributed ledgers in digital payment systems. We present a brief taxonomy of digital payment systems that use tokens, and we address the different models for how distributed ledger technology can support digital payment systems in general....

Testnets play a crucial role in blockchain and distributed ledger technology development. These simulated environments enable developers to test new features, smart contracts, and consensus mechanisms without risking real assets or compromising the integrity of live networks. This chapter...

Layer-two channels are one of the proposed methods to scale blockchains by offloading transactions from the blockchain to off-the-chain channels backed by on-chain contracts and tokens. This approach improves scalability by involving the blockchain only if necessary, such as when a channel is...

Staking as a service (StaaS) has emerged as a key solution for democratizing access to proof-of-stake (PoS) networks, allowing users to participate in blockchain validation without managing the technical complexities of running a validator node. This chapter highlights the advantages and...

Stablecoins can offer global consumers the benefits of digital payments without the volatility and risk of cryptocurrencies such as Bitcoin. Clear legislation covering mechanisms for maintaining parity with an underlying benchmark, and the composition and safeguarding of reserves supporting...

Blockchain applications greatly depend on smart contracts, which are programs of software code that automatically execute the terms of upfront negotiated agreements. The execution of such agreements has traditionally been guaranteed by a single trusted entity, but is increasingly guaranteed by...