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Circle's Arc public chain releases a post-quantum cryptography roadmap, covering full-stack upgrades from wallets to validators

According to the official blog, Circle's institutional-grade blockchain Arc has released a phased upgrade roadmap for post-quantum cryptography (PQ), planning to introduce post-quantum signature schemes at the launch of the mainnet, gradually covering full-stack layers such as private state protection, infrastructure hardening, and validator authentication.The Arc mainnet will support post-quantum signatures from the outset, using an opt-in mechanism that does not require mandatory migration or a full network reset, allowing users to independently create wallets with long-term security. The recent goal is to extend quantum resistance to the private virtual machine (VM) layer, protecting private balances, private transactions, and private payees, with public keys additionally encapsulated in a symmetric encryption layer under privacy mode.The mid-term plan is to advance the upgrade of the infrastructure layer, aligning with industry standards such as TLS 1.3, covering access control, cloud environments, and hardware security modules (HSM). The long-term goal is to complete the hardening of validator signatures. Given that Arc's block finalization time is less than 1 second, the current assessment considers the risk of quantum attacks in this phase to be relatively limited, and it will be steadily advanced after the post-quantum consensus toolchain matures.Circle also warns that attackers may adopt a "collect now, decrypt later" strategy, and institutions should plan their cryptographic migration paths as early as possible.

Anthropic: The Claude subscription service will no longer cover the usage rights for third-party tools such as OpenClaw

AI company Anthropic announced that starting from April 4 at 15:00 Eastern Time, it will prohibit access to third-party tools through the Claude subscription service, including the open-source project OpenClaw. The new regulations require that related features can only be used through additional packages or billed on a pay-as-you-go basis via API.This adjustment means that many developers and teams relying on OpenClaw to build automated workflows will shift from a fixed subscription cost model to an unlimited pay-as-you-go system, significantly increasing overall usage costs. Some developers have indicated that the original usage cost of about $20/month could soar to hundreds or even thousands of dollars.The market generally believes that this move is related to OpenClaw founder Peter Steinberger's recent joining of OpenAI. Meanwhile, Anthropic is accelerating the promotion of its own tool ecosystem, including native integration solutions for Claude, to replace third-party toolchains.It is worth noting that Anthropic has previously tightened third-party access through technical restrictions, updates to service terms, and feature replacements. This policy is seen as a "final blockade" and will be extended to more tools.Industry analysis points out that this event reflects an intensifying trend of "ecosystem tightening" in AI platforms, with leading companies strengthening control through vertical integration. At the same time, the developer ecosystem faces rising cost uncertainties and platform dependency risks, which may further drive some users toward more open alternatives.

The United Nations Development Programme promotes blockchain infrastructure, with 42 cases covering payments, climate, and digital identity

Cointelegraph Research's latest report shows that the United Nations Development Programme is applying blockchain technology to the construction of public digital infrastructure, focusing on addressing issues of transparency, collaborative efficiency, and trustworthy data sharing in government systems.The report "New Tech, New Partners" outlines 42 practical cases covering areas such as digital payments, financial inclusion, climate funding, data governance, and community investment, among which 7 focus on digital identity and data systems, primarily distributed in developing economies in Africa, Latin America, Asia, and Eastern Europe. The research points out that UNDP adopts a "pilot---validate---scale" approach, collaborating with governments, developers, and local businesses to first implement small-scale projects and then gradually promote them based on actual results. It also emphasizes a "platform-agnostic" architecture to maintain system openness and interoperability. Furthermore, the report highlights the importance of governance and risk control, stating that the application of blockchain in public systems requires accompanying privacy protection, regulatory frameworks, and audit mechanisms to prevent data misuse and smart contract risks. Overall, blockchain is extending from financial scenarios to public governance infrastructure, becoming one of the important technological options for digital transformation in various countries.

Resolv Labs: 9 million illegally minted USR have been destroyed, do not trade related tokens during the implementation of recovery measures

Resolv Labs issued an update regarding a security incident, stating that a malicious attacker illegally accessed Resolv's infrastructure through a stolen private key and minted approximately $80 million worth of uncollateralized USR. The relevant smart contracts have been quickly paused, and approximately 9 million USR held by the attacker have been destroyed to mitigate potential impact.Currently, the protocol holds about $141 million in assets, with the confirmed actual impact being only about $500,000 in redemptions processed before the pause. The current USR supply consists of approximately 102 million tokens before the incident and about 71 million newly minted illegal tokens. As the first step towards recovery, Resolv plans to allow redemptions of pre-incident USR starting from March 23, 2026, for whitelisted users. Affected users should coordinate directly with RDAL through official channels.The announcement stated that the incident stemmed from unauthorized actions by a third party, including targeted infrastructure attacks. Resolv's underlying collateral has not been directly compromised. The team is tracking and attempting to control the illegally minted USR and other affected assets, coordinating with partners and counterparties, and working with law enforcement and on-chain analysis companies to trace the responsible parties. Resolv strongly advises against trading USR or related Resolv tokens during the implementation of recovery measures, as user trading behavior after the incident may affect the recovery process.
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