Chainlink (LINK) fell below $10 and was last cited trading near $9.60 after a rejection around $10.70. Between May 9 and 10, active addresses spiked to over 280,000 versus a historical baseline near 3,000, while Binance’s LINK reserve declined over the past 14 days from 86.3 million to 85.8 million tokens. The same analysis points to persistently negative 7-day average netflows, suggesting outflows outweighed inflows during the surge.

On May 21, 2026, the CFTC and the National Hockey League said they signed a memorandum of understanding to set up an information-sharing and cooperation framework tied to professional hockey and related event contract markets. The agreement names points of contact for ongoing coordination, confidential exchanges, and communications on market integrity and oversight, and it can be ended by either party with 30 days' written notice.

Ethereum has shed more than half of its peak value over the past nine months, and an on-chain analyst says the usual dip buyers have not appeared. In a May 21 report, Easy On Chain said derivatives-led optimism is not being matched by spot demand, alongside declines in fund holdings and a persistently negative Coinbase Premium Index through May.

Italian authorities say they dismantled a €1M+ ($1.1M) tax fraud scheme involving Bitcoin Ordinals and BRC-20 tokens, alleging one individual generated undeclared gains while also obtaining public subsidies they were not entitled to. Investigators say exchange KYC links and on-chain analysis let them reconstruct a full “inscription monetization cycle” and attribute multiple addresses to a single owner.

On May 21, 2026, the CFTC and the NHL signed a memorandum of understanding to coordinate against fraud, insider trading, and manipulation tied to NHL-related event contracts on federally regulated prediction markets. The pact sets up designated contacts and confidential information sharing, and it builds on the NHL’s October 2025 licensing deals with Kalshi and Polymarket that use official league data for contract settlement.

Bithumb said it has terminated its partnership with Heleket, citing anti-money laundering and terrorism-financing risk concerns. The move comes as the South Korean exchange tries to strengthen compliance after regulators earlier dropped a 36.8 billion won ($24.6 million) penalty tied to transactions routed through unregistered foreign platforms.

On May 21, 2026, XRP traded around $1.36 and finished at $1.3633, staying roughly $0.013 above the $1.35 support area that has held three daily-chart tests since mid-April. Binance open interest was reported at $488.3M, with SMA50 at $1.3954 and SMA100 at $1.3982 sitting overhead while RSI remained weak at 42.

HYPE, Hyperliquid's native token, surged to a new all-time high of $61.68 during U.S. trading hours as volumes reached a three-month peak. The move came alongside rising interest from whales and wallets associated with Grayscale and Bitwise, while derivatives activity expanded with open interest pushing above $2.1B.