Aave: WETH Reserve on Ethereum Core V3 Market Unfrozen

On April 21, Ripple unveiled its XRPL Quantum-Secure Roadmap—an initiative to fortify the XRP Ledger (XRPL) against future quantum threats, with full readiness targeted by 2028. The roadmap outlines four key stages: 1. **Post-Quantum Recovery (Q-Day Preparedness)**: Focuses on establishing contingency plans to safeguard funds if classical cryptographic standards are decrypted. 2. **H1 2026**: Proactive planning and testing to assess quantum risks, plus collaboration with Project Eleven to validate NIST-recommended algorithms. 3. **H2 2026**: Integration of post-quantum signature schemes into Devnet, alongside exploration of privacy primitives. 4. **2028 Target**: Propose ecosystem amendments to enable a full transition to native post-quantum cryptography. Ripple noted that XRPL’s built-in key rotation and seed-derived key generation capabilities already lay the groundwork for this migration—positioning it with a protocol edge over networks like Ethereum when addressing qu

On April 21st, per Onchainlens data, Tether minted 1 billion USDT (1B USDT) on the Ethereum network just 4 minutes ago. Additionally, Tether has minted a total of 2 billion USDT (2B USDT) on Ethereum over the past two days.

April 21st — Per Iranian state media, an Iranian delegation has not yet departed for Pakistan to join peace talks with the U.S. (Xinhua)

April 21 — Japan Securities Clearing Corporation (JSCC), a clearing arm of Japan Exchange Group, has launched a proof-of-concept (PoC) experiment with Mizuho Bank, Nomura Securities and Digital Asset to explore blockchain technology for Japanese Government Bond (JGB) management. Per a joint statement released Monday, the experiment will use the Canton Network to integrate existing systems across multiple institutions and test on-chain transfer and management of JGBs. Its goal is to evaluate the feasibility of enabling real-time collateral transactions while complying with relevant financial instrument and transaction laws. The PoC will also explore cross-border use cases involving central counterparties (CCPs), institutional investors and other market participants. JSCC noted the experiment is part of Japan’s Ministry of Finance’s broader "Payment Innovation Project." As overseas markets like the U.S. advance testing of similar infrastructure, advancing JGB collateral management

Per PeckShield monitoring data, the KelpDAO attacker transferred 75,700 ETH to two new addresses on April 21.

April 21st – During the “Decoding Web 4.0: When AI Agents Take Over On-Chain Authority” roundtable, MuleRun CTO Steven Hu dove into the “Agent Moat” topic, noting the traditional idea of an AI tech moat is quickly fading. The core driver? Faster convergence of model capabilities and exponential gains in development efficiency. Hu pointed out the performance gap between mainstream large models is narrowing rapidly—especially over the past year, when the capability gap between domestic and global models has shrunk significantly. Meanwhile, exploding coding capabilities have supercharged software development: features that once took weeks or months to build now take days. This means Agent frameworks and specific functional modules can be quickly reused or replicated via open-source tools, making product-level “feature moats” increasingly fragile. In this landscape, Hu argues Agents’ future core competitiveness will hinge on two pillars: 1. **Continuous high-frequency iteration*