Solana staking protocol Fragmetric completes $7 million seed round

On December 2, following recent hawkish comments from the Bank of Japan (BOJ) Governor and related asset movements, the probability on Polymarket of a 25-basis-point rate hike by the BOJ in December has surged to 81%, while the chance of no rate change stands at 17%. The BOJ is set to announce its interest rate decision on December 19, per public information.

December 2 — Anthropic’s latest research reveals AI agents have significant on-chain attack capabilities: In simulation tests of smart contracts actually exploited between 2020 and 2025, Claude Opus 4.5, Sonnet 4.5, and GPT-5 collectively reproduced vulnerabilities worth approximately $4.6 million. When scanning 2,849 contracts with no known vulnerabilities, the two Claude models also identified 2 entirely new zero-day vulnerabilities and successfully simulated profitable exploits. The research notes AI’s on-chain attack returns have roughly doubled every 1.3 months over the past year, and the models now fully possess autonomous, profitable vulnerability exploitation capabilities.

On December 2nd, "Fed Whisperer" Nick Timiraos published a column on Donald Trump’s nomination of the new Federal Reserve Chair. The piece notes the final candidate for the role has met with Jerome Powell. Sources say the candidate will meet with Treasury Secretary Steven Mnuchin and other White House staff this week, prior to meeting Trump. Powell has indicated Trump may announce the nominee before Christmas. While Trump has stated he has made a decision—with all signs pointing to Kevin Hassett as his top pick—those tracking the process note he could still change his mind. Sources add that last week Trump discussed the next Fed Chair with allies, urging them to outline reasons for supporting either Hassett or Kevin Warsh. A source revealed someone told Trump Warsh does not have as close a professional relationship with the president as Hassett does. The person also pointed out that if Trump chooses Hassett, he will lose Hassett’s seat on the National Economic Council (NEC).

On Dec. 2, Miner Weekly reported that Bitcoin miners are currently navigating the most challenging profit environment in history. November’s sharp Bitcoin price drop has pushed mining revenue per petahash (PH/s) down from roughly $55 in Q3 to around $35 PH/s — falling below the $44 PH/s average all-in cost for major publicly traded mining rigs. With the network’s hash rate approaching 1.1 zettahashes per second (ZH/s), the cost per hash now reflects actual earnings under current mining difficulty. Even for the latest-generation rigs, payback periods exceed 1,000 days — far longer than the roughly 850 days remaining until the next Bitcoin halving.

December 2 Latest data from F2Pool shows that with Bitcoin network difficulty remaining high and electricity costs estimated at $0.06 per kWh, several older Bitcoin mining rig models have fallen below their shutdown price and entered unprofitable territory. Models including the Antminer S19, S19j, S19 Pro, S17 series, Avalon A12/A13 series, and Whatsminer M20/M30 series have shutdown prices mostly in the $90,000–$100,000 range or higher. Their current daily net income is negative, putting them near the shutdown threshold. In contrast, the new generation of high-efficiency liquid-cooled rigs has shown greater resilience. Data indicates the Antminer S23 Hyd. has a shutdown price of approximately $32,200 and remains profitable. Rigs like the S21 XP Hyd. have shutdown prices ranging from $40,000 to $50,000, boasting significantly better risk resistance than air-cooled models. Industry insiders note that as network difficulty rises and the efficiency gap widens, this cycle is acc

On December 2, 2025, official sources announced that OKX users are competing in a new coin contract trading contest for TRUTH, JCT, PIEVERSE, BEAT, and SAPIEN—running from 10:00 AM UTC+8 on November 28, 2025, through 8:00 AM UTC+8 on December 15, 2025. Participants will split a $120,000 prize pool based on their total contract trading volume rankings. The event is currently in full swing. Official data shows 48,884 users have joined so far, with total trading volume hitting $108,242,439.