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South Korea's National Tax Service (NTS) plans to conduct detailed analyses of cryptocurrency transaction histories for suspected tax evaders, ZDNet Korea reported. The agency will use its findings to take legal action against any illegal activities discovered, such as undeclared gifts. According to a bid announcement on the country's Public Procurement Service platform, the NTS is seeking to acquire software licenses for virtual asset transaction tracking. The solutions the agency aims to implement are analysis platforms from Chainalysis and TRM Labs. This technology will reportedly enable the NTS to identify "mixer" techniques used in money laundering and track non-custodial wallets where users directly control their own private keys.

South Korean crypto exchange Upbit announced it will list USD AI (CHIP) at 1:00 p.m. UTC today. The exchange will add support for trading against the South Korean won (KRW), Bitcoin (BTC), and Tether (USDT).

The following are the 24-hour long/short ratios for BTC perpetual futures on the world’s three largest crypto futures exchanges by open interest: Overall: 50.61% long, 49.39% short - Binance: 51.82% long, 48.18% short - OKX: 53.03% long, 46.97% short - Bybit: 50.62% long, 49.38% short

Ripple has announced a four-step roadmap to make the XRP Ledger quantum-resistant by 2028, CoinDesk reported. The plan includes the following phases: - Step 1: Migrate all assets to quantum-secure accounts to protect exposed public keys and long-term holdings. - Step 2: Conduct a quantum vulnerability assessment across the XRP Ledger network and test defenses proposed by the U.S. National Institute of Standards and Technology (NIST). - Step 3: Integrate existing and quantum-resistant signatures on a testnet. - Step 4: Deploy a new, quantum-resistant amendment to the XRP Ledger ecosystem.

South Korean crypto exchange Bithumb announced it will list Based (BASED) for KRW trading at 8:00 a.m. UTC on April 21.

Binance has announced it will delist several margin trading pairs at 6:00 a.m. UTC on April 24. The affected cross margin pairs are AAVE/ETH, STX/BTC, ICP/BTC, SEI/BTC, AAVE/BTC, UNI/BTC, LTC/ETH, NEAR/BTC, XLM/BTC, and ADA/ETH. The exchange will also delist the STX/BTC, ICP/BTC, SEI/BTC, AAVE/BTC, UNI/BTC, LTC/ETH, NEAR/BTC, XLM/BTC, and ADA/ETH isolated margin pairs.

X402, an AI payment protocol led by Coinbase, has launched Agentic.market, a dedicated marketplace where AI agents can independently find and pay for services, Cointelegraph reported. Through this marketplace, AI agents can autonomously acquire skills, such as booking flights or analyzing market data, without complex API configurations and pay for them using stablecoins.

U.S. spot Ethereum ETFs recorded net inflows of approximately $67.8 million on April 20, marking the eighth consecutive trading day of positive flows, according to data compiled by Farside Investors. - BlackRock ETHA: +$76.1 million - BlackRock ETHB: +$13.2 million - Grayscale ETHE: -$17.1 million

U.S. Bitcoin spot ETFs recorded approximately $238 million in net inflows on April 20, marking the fifth consecutive day of positive flows, according to data from Farside Investors. - BlackRock (IBIT): +$256 million - Morgan Stanley (MSBT): +$8.1 million - Fidelity (FBTC): -$6.6 million - Grayscale (GBTC): -$24.9 million

The HTX: Recovery wallet, managed by Justin Sun's team, successfully withdrew USDT worth $274 million just 21 minutes after the Aave protocol froze its rsETH/wrsETH market. According to Wu Blockchain, Aave temporarily suspended all platform withdrawals after Sun had moved his funds. This swift action contrasts with other large investors, who had to swap their assets or sell them on decentralized exchanges, often at a discount.

Arbitrum (ARB) has frozen 30,765 ETH, worth $71.05 million, held on Arbitrum One by the hacker behind the Kelp DAO exploit, the project announced on its official X account. The hacker's address begins with 0x5d3919. The individual still holds 75,700 ETH on the Ethereum chain.

The number of financial complaints filed with South Korea's Financial Supervisory Service (FSS) rose 10.4% to 128,419 in 2025, up from 116,338 in 2024. According to News1, this increase was primarily driven by a surge in complaints related to virtual assets, which skyrocketed by 1,014% from 403 in the second half of 2024 to 4,491 in 2025. The rise in complaints was attributed to issues such as the non-payment of promotional benefits for first-time API traders on virtual asset exchanges.

Amid a proliferation of blockchain networks, Web3 developer platform Fluent is gaining attention for its efforts to unify a fragmented development landscape and bring the concept of reputation on-chain. The platform is preparing for its mainnet launch and the release of its native token, BLEND, in close collaboration with Coinbase, the largest crypto exchange in the U.S. CoinNess spoke with Fluent CEO Dini ahead of the mainnet and token generation event (TGE) to discuss the platform's unique technical architecture, its partnership aimed at Coinbase's 6 million users, its outlook on the South Korean market, and its future roadmap.

Binance has announced the listing of five new margin pairs: 币安人生/U, 币安人生/USD1, ENJ/U, GIGGLE/U, and ORDI/U. The pairs will be available for trading at 8:00 a.m. UTC on April 21.

Bybit has announced it will list OPG for spot trading.

The following shows estimated liquidation volumes and position ratios for major crypto perpetual futures over the past 24 hours: - BTC: $92.61 million liquidated (86.41% shorts) - ETH: $88.58 million liquidated (69.36% shorts) - PIEVERSE: $16.56 million liquidated (54.43% shorts)

Feng Qingfeng, CEO of British sports car brand Lotus, announced a vision to innovate the future of mobility using AI and blockchain at the 2026 Hong Kong Web3 Festival, Foresight News reported. He stated that the company will leverage AI for personalized driving experiences and blockchain to accelerate supply chain management and the construction of payment systems. Feng also noted that Lotus dealers in the UK are already operating with cryptocurrency payment systems.

New Bank of Korea Governor Shin Hyun-song focused exclusively on Central Bank Digital Currency (CBDC) in his inaugural address, making no mention of stablecoins, Financial News reported. Shin stated that the central bank must proactively prepare for the future monetary system in response to digital financial innovation. He added that the Bank of Korea will enhance the use of CBDCs and deposit tokens through the second phase of Project Hangang and elevate the status of the Korean won in the digital payment landscape via international collaborations like the Agora Project. Shin had previously emphasized the importance of CBDCs during his confirmation hearing.

An anonymous whale or institutional address has deposited 2,000 cbBTC, worth $150 million, to Coinbase, EmberCN reported. The address previously purchased 4,000 cbBTC in February and would realize a profit of $5.37 million if the assets are sold.

Curve (CRV) founder Michael Egorov said on X that the problem of DeFi hacks is due to single points of failure (SPOF), and the industry needs a unified security standard. He cited the recent Kelp DAO and Aave rsETH exploit as an example, noting that Aave claims its protocol is fine, while the rsETH team points to a flaw in the LayerZero (ZRO) bridge. LayerZero also maintains its system is not at fault. Egorov highlighted that, ultimately, users are unable to withdraw their funds. "All security measures should focus on prevention, not post-incident remedies, and must reduce single points of failure," he stressed. "We should push for the creation of a unified security standard led by the Ethereum and Solana foundations, with participation from major projects, auditing firms, and risk assessment teams." Curve itself has experienced security incidents in August 2022, July 2023, and June 2024. The July 2023 event resulted in damages of around $70 million.

Jason (Seung-yoon) Lee, CEO of the blockchain-based intellectual property (IP) protocol Story Protocol, will speak at an event for top holders of the Official Trump memecoin, Chosun Biz reported. Lee was invited as a speaker for the Global Leadership Conference, scheduled to be held on April 25 at Mar-a-Lago in Florida. U.S. President Donald Trump is expected to attend the event and host a gala luncheon. The conference's 20 speakers also include: - Song Chi-hyung, chairman of Dunamu - Cathie Wood, CEO of Ark Invest - Paolo Ardoino, CEO of Tether

Global crypto VC Paradigm has unstaked 2.14 million HYPE, valued at $88 million, according to on-chain analyst MLM. The firm had previously staked 14.7 million HYPE last November.

Digital asset manager Grayscale has selected Anchorage Digital as the custodian for its HYPE ETF, choosing the firm over Coinbase, The Block reported. The change was disclosed in an updated filing for the ETF. The decision is considered unusual, as Coinbase Custody currently serves as the custodian for nearly all spot Bitcoin ETFs trading in the U.S.

An anonymous whale address beginning with 0x8Ad sold 12,000 ETH to repay a loan on the crypto lending protocol Aave (AAVE) after withdrawing 18,300 ETH ($42.18 million) from Binance, Onchain Lens reported. The address still holds 6,315 ETH ($14.62 million), which is also likely to be sold.

Layer 1 blockchain Sui (SUI) announced via its official X account that it has integrated with stablecoin payment firm RedotPay. The integration supports payments in SUI and USDC on the Sui network. RedotPay has over seven million users in more than 100 countries.