Circle: USDC crosses $1 billion on-chain, with $900 million coming from BNB Chain

On December 21, SlowMist Chief Information Security Officer (CIO) 23pds retweeted a community user’s post to issue a security alert. A developer behind a Polymarket copy-trading bot hid malicious code in the project’s GitHub repository. When activated, the bot automatically reads users’ .env files—which store wallet private keys—leading to fund theft. The bot’s author repeatedly modified the code and made multiple GitHub submissions, intentionally concealing the malicious payload.

**Digital Currency Adoption Speeds Up—Beware These Fraud Traps** On December 21, *Science and Technology Daily* published an article titled *“Digital Currency Adoption Speeds Up—Beware These Fraud Traps.”* Liu Xiaochun, Director of the Shanghai Financial Digitalization Center, revealed that some criminals use instant messaging tools and other channels to spread info about buying digital currency wallets with promises of high returns. They then use the acquired wallets to carry out telecom fraud, money laundering, and other illegal activities. Other scammers create fake event pages to steal personal information and funds. Dong Ximiao, Deputy Director of the Shanghai Finance and Development Laboratory, noted that the key to avoiding digital currency fraud is to recognize its ordinary status as legal tender, reject all get-rich-quick schemes, and protect wallet passwords and verification codes the same way you’d safeguard physical cash.

December 21st — Per HTX market data, UNI has broken above $6.2, currently trading at $6.213 with a 24-hour gain of 17.2%. Per official updates, the final governance vote for Uniswap’s "Activate Fee Switch Proposal" kicked off yesterday, with current support at nearly 100%. The vote concludes at 2:11 Beijing time on December 26. If approved, following a 2-day waiting period: 100 million UNI will be burned, Uniswap v2 and v3 fee switches will be activated on mainnet, and the burning of UNI tokens and Unichain fees will begin.

Dec. 21 – U.S.-listed mining firm Bitdeer disclosed its latest Bitcoin (BTC) holdings data Wednesday, showing 1,996.7 BTC held as of Dec. 19. The company mined 144.1 BTC this week and sold 141.5 BTC in the same span, with total holdings down nearly 20% from the prior month.

As of December 21, Nansen data reveals Dragonfly Capital has transferred a total of 6 million MNT (valued at approximately $6.95 million) to cryptocurrency exchanges over the past 7 days. The firm still holds 9.15 million MNT (worth roughly $10.76 million) across multiple wallets.

On December 21st, Maksim Balashevich—founder of crypto market analysis firm Santiment—stated that social media hasn’t shown enough panic sentiment to confirm a market bottom. Bitcoin could still drop to roughly $75,000, marking a potential 14.77% decline from current levels. Balashevich noted that many users remain optimistic about a short-term trend reversal, but true market bottoms typically don’t form under such conditions. On Thursday, Jurrien Timmer—Fidelity’s Global Macro Research Director—suggested Bitcoin could “pause for a year” in 2026, with prices potentially falling to around $65,000. In contrast, Bitwise Chief Investment Officer Matt Hougan predicted 2026 will be Bitcoin’s “year of ascent.”