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Blockchains

Blockchains is an international, peer-reviewed, open access journal on blockchain and its applications published quarterly online by MDPI.

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All Articles (55)

This paper develops an analytical framework for the joint design of central bank digital currency (CBDC) and its underlying ledger architecture. We treat a digital monetary system as a tuple M = (S, R, C, I)—supply state, rule set, circulation parameters, and incentive structure—and read centralized, permissioned-distributed, and hybrid ledger designs as parameter settings on M. Two analytical propositions extend the framework. Proposition A locates a threshold above which a retail holding cap ceases to bind, building on the Brunnermeier–Niepelt neutrality condition. Proposition B characterizes the fixed point of the rule-update map under bounded policy shocks and reports its mean-square convergence rate. Each proposition is paired with a stylized numerical exercise; neither claims empirical validation. A comparative section then traces how the institutional environments of Singapore, the European Union, the United States, and China fix admissible regions in M before any architectural choice. What we contribute is a parametric vocabulary for techno-institutional comparison, not a new architecture; the principal limitation is the absence of pilot-data calibration, which we list as the highest-priority continuation.

Blockchains

10 August 2026

CBDC design triangle (privacy—compliance—performance).

Cryptocurrency market infrastructure—public blockchains and cross-chain bridges supporting tens of billions in liquidity—is monitored as a systemic-risk surface by the Financial Stability Board and equivalent bodies, with defensive posture calibrated against human-level adversaries. Anthropic’s April 2026 release of Claude Mythos Preview has prompted institutional response across financial regulation but no blockchain-specific analytical framework. This paper develops one by defining Mythos-class as a vendor-neutral capability profile: a set of frontier autonomous offensive capabilities specified independently of any single model or vendor (defined by five constituent capability primitives). The central analytical claim is friction inversion: the patch primitives, segmentation, vendor-coordinated disclosure, and credential rotation that constrain Mythos-class capability in conventional IT environments are structurally absent on-chain. This makes blockchain exposure positioned differently in kind, not degree, from enterprise IT. The paper instantiates this finding against Bitcoin and Ethereum/L2 architectures through analysis of four major bridge exploits totaling over $1.74 billion in losses. Vendor-neutral defensive and governance frameworks defined against the capability profile rather than any specific model release are the correct unit of analysis. On this basis the paper offers general recommendations for protocol governance, audit and verification cadence, and regulatory posture, developed as an analytical framework rather than as empirically validated risk estimates.

Blockchains

10 July 2026

This article examines Liquid Equity Rewards (LERs), a proposed blockchain-enabled mechanism designed to provide shareholders with time-weighted, utility-only incentives as a potential tool for improving corporate governance. LERs employ a dual architecture comprising voucher-based rewards for off-chain equities and programmable on-chain units for tokenized stocks to encourage shareholder retention amid proxy battles, activist challenges, and corporate political complexities. Drawing on NASDAQ’s tokenized stock framework, stablecoin infrastructure, and DeFi liquid staking principles, this article develops a conceptual and normative framework for LERs and evaluates its potential effectiveness relative to conventional defenses such as poison pills. The analysis assesses LER’s plausible legal compatibility with Delaware corporation law, U.S. securities rules, and the EU’s MiCA framework, while acknowledging that definitive legal conclusions require case-specific adjudication and future regulatory interpretation. The article advances four testable hypotheses regarding LER’s potential to mitigate stock price volatility, reduce activist success rates, and address ESG, M&A, and political expenditure disputes in a market context shaped by shareholder activism. The proxy-fight context is the principal application; ESG, M&A, political-spending, and executive-compensation contexts are discussed as illustrative extensions of the framework rather than as equally mature use cases. A comparative evaluation against existing governance mechanisms and a cost–benefit analysis suggest that LER’s governance enhancements and market opportunities may outweigh implementation challenges, subject to empirical validation. This article contributes a structured analytical framework and identifies conditions under which LERs could offer a scalable, transparent alternative that fosters stakeholder alignment.

Blockchains

8 July 2026

Heterogeneous cross-domain networks are plagued by fragmented trust, data silos, and privacy risks, while conventional single-chain architectures fail to reconcile cross-chain interoperability, regulatory compliance, and commercial privacy. To address these limitations, we present an Entity–Data–Asset triple-verification architecture that integrates three key components: Decentralized Identifiers (DIDs) for identity, Verifiable Credentials (VCs) for credentials, and Oracles for cross-chain coordination. Specifically, this architecture enables trustworthy collaboration through three core mechanisms: (1) a cross-chain identity binding mechanism based on DIDs that replaces traditional address binding to construct an “identity-as-access” trust model; (2) a collaborative verification paradigm leveraging VCs and Verifiable Presentations (VPs) to cryptographically link off-chain verification with on-chain execution; and (3) an event-driven Oracle coordination matrix designed for complex business semantics, supporting automated and privacy-preserving state synchronization across asymmetric domains. Experimental evaluation of a prototype integrating Hyperledger Indy and Besu demonstrates a peak Verifiable Presentation batch verification throughput of 0.96 batches/s at C=20, though throughput degrades noticeably under high concurrency due to middleware contention, and an average cross-chain transfer latency of 13.31 s under single-process conditions (mean over 10 iterations). Furthermore, by leveraging this asymmetric design, our architectural optimization strategy—anchoring only cryptographic hashes rather than full credential payloads—reduces the regulatory chain’s storage and gas overhead by approximately 85% compared to traditional full-payload schemes. These results validate the architecture’s feasibility, security, and cost-efficiency for facilitating trustworthy collaboration in complex, heterogeneous ecosystems.

Blockchains

7 July 2026

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Blockchains - ISSN 2813-5288