A certain Ethereum ICO OG Wallet moved 2000 ETH after being dormant for over 10 years

As of December 20, stablecoin total market capitalization has edged down 0.26% week-over-week to $309.298 billion, per DefiLlama data—still holding near its all-time high. USDT maintains a 60.23% market dominance.

December 20th — Per FarsideInvestors’ monitoring, U.S. Bitcoin spot ETFs registered a net outflow of $1.583 billion yesterday, with IBIT posting a $1.736 billion net outflow. Separately, U.S. Ethereum spot ETFs saw a net outflow of $75.9 million, all stemming from outflows in BlackRock’s ETHA.

December 20: Per Onchain Lens monitoring, Arthur Hayes transferred 680 ETH (valued at $2.03 million) to Binance and Flowdesk, potentially for sale.

On December 20, Nic Carter—founder of smart contracts and co-founder of Castle Island Ventures—published a lengthy article. In it, he noted that leading quantum theorist Scott Aaronson’s research indicates breaking Bitcoin with quantum computing is merely an “extremely difficult” engineering challenge, not a requirement for new basic physics discoveries. Carter pointed out Bitcoin could theoretically implement a soft fork to adopt a post-quantum (PQ) signature scheme; some PQ encryption/signature schemes already exist. The main hurdles, however, are selecting the specific PQ scheme, organizing the soft fork, and migrating all addresses holding tens of millions in combined balances. As a result, mitigating Bitcoin’s quantum decryption risk could take nearly a decade. Further, a large portion of vulnerable Bitcoin sits in abandoned addresses, and their owners can’t be forced to move the funds. Even if Bitcoin upgrades to PQ signatures, it would still face the risk of 1.7 million BT

Uniswap’s final governance vote on its “Fee Switch Activation Proposal” has officially kicked off, per the protocol’s official website. The vote launched on December 20th and is set to conclude at 2:11 AM Beijing time on December 26th. Earlier reports note that if the proposal passes, a 2-day grace period will follow, after which: - 100 million UNI tokens will be burned; - Fee switches for Uniswap v2 and v3 will activate on the mainnet; - Burning of UNI tokens and Unichain fees will commence.

On-chain analyst Ai Auntie (@ai_9684xtpa) reported on December 20 that the address **pension-usdt.eth** has netted $24.04 million in profits from trading on Hyperliquid over the past month. Of its 17 December transactions, 16 were profitable—translating to a 94.1% win rate. Currently, the address holds 30,000 ETH (valued at ~$89.72 million), ranking among the top 3 ETH long positions on Hyperliquid. Its average entry price for the ETH position is $2,969.6. Just 9 hours prior to the update, the address closed a BTC long position, pocketing $1.258 million in profit.