According to Cointelegraph, the Bitcoin (BTC) network's mining difficulty, which determines the computational challenge of adding new blocks to the blockchain, saw a slight increase to 148.2 trillion in the final adjustment of 2025. This difficulty is expected to rise again in January 2026, with projections indicating an increase to 149 trillion on January 8, 2026, at block height 931,392, as reported by CoinWarz. The average block time currently stands at approximately 9.95 minutes, slightly below the target of 10 minutes. This suggests that the mining difficulty will likely increase to bring block times closer to the desired target. Throughout 2025, Bitcoin's mining difficulty reached new all-time highs, notably experiencing two significant rises in September during an uptrend in Bitcoin's price, followed by a dramatic market crash in October. An increase in mining difficulty implies that miners must invest more in computing and energy resources to stay competitive, adding to the challenges faced by operators in this capital-intensive industry. The difficulty adjustment plays a crucial role in maintaining network decentralization and stabilizing Bitcoin's price. By adjusting the challenge of mining blocks, the network ensures that blocks are not mined too quickly or too slowly, keeping the average block time close to the 10-minute target. This adjustment occurs every 2016 blocks, roughly every two weeks, based on the average block time. If blocks are being mined too quickly, the difficulty increases to maintain the target time, and vice versa. This dynamic adjustment prevents any single miner from dominating the network by rapidly increasing their mining capacity or adding excessive computing power, thereby preserving the network's decentralization. A potential threat to Bitcoin's network is a 51% attack, where a miner or group of miners could control the majority of the network's computing power, leading to centralization, double-spending, and undermining Bitcoin's core value proposition. Such an attack would have severe implications for Bitcoin's price. Even without a 51% attack, a miner with substantial computing resources could mine blocks at an accelerated pace, collect all block rewards, and sell the BTC, exerting downward pressure on Bitcoin's price. By dynamically adjusting the mining difficulty in proportion to the total computing resources deployed on the Bitcoin network, the protocol remains decentralized and protects Bitcoin's price by ensuring a consistent supply schedule.

Bitcoin and the broader crypto market are showing clear signs of caution, not because of price alone, but because of what stablecoin flows and dominance are revealing beneath the surface. source: https://www.ethnews.com/bitcoin-enters-a-cautious-phase-as-stablecoin-dominance-stays-elevated/

Hyperliquid decentralized exchange has ended the year with more than 600k new users and $844M in revenue. source: https://www.cryptopolitan.com/hyperliquid-wraps-up-the-844m/

Michael Saylor has once again ignited speculation around another major Bitcoin purchase, posting a short but loaded message - “Back to Orange” - that many market watchers interpret as a familiar prelude to fresh accumulation by his company. source: https://cryptodnes.bg/en/michael-saylor-hints-at-another-major-bitcoin-purchase/

Michael Saylor, co-founder of Strategy Inc.  (NASDAQ:MSTR), stands as one of Wall Street’s most prominent Bitcoin (CRYPT source: https://www.benzinga.com/crypto/cryptocurrency/25/12/49602277/michael-saylor-once-mirrored-warren-buffett-and-dr-doom-while-predicting-bitcoins-days-are-numbered-it-was-a-big-mistake?utm_source=cryptopanic.com&utm_campaign=partner_feed&utm_medium=referral

This week put crypto’s “safe-haven” narrative to the test. Here’s how some of your favorite coins fared. source: https://ambcrypto.com/crypto-market-weekly-review-28-december/

null source: https://x.com/wublockchain/status/2005353084768460887

Bank of America forecasts a 30% year-over-year surge in global semiconductor sales that will finally push the sector past a historic $1 trillion annual sales milestone in 2026. source: https://catenaa.com/industries/technology/bofa-forecasts-30-surge-in-chip-sales-in-2026/

Indian police arrest ex-Coinbase employee over 2025 data breach; CEO confirms. source: https://coincu.com/news/coinbase-employee-arrest-data-breach/

The hacker, who has already bridged the $3. 9 million worth of stolen tokens to other chains, will not be affected by the network's planned rollback. source: https://www.theblock.co/post/383808/flows-controversial-planned-rollback-to-undo-3-9-million-exploit-blindsided-some-partners?utm_source=rss&utm_medium=rss

埃隆-马斯克（Elon Musk）在 X 平台上开发的人工智能聊天机器人 Grok 受到了维塔利克-布特林（Vitalik Buterin）的称赞，因为它能给出不可预测的回复，挑战用户的政治偏见，促进更真实的互动。

使用最广泛的加密货币钱包之一--Trust Wallet 遭到大规模黑客攻击，估计损失超过 600 万美元。

意大利竞争管理机构已下令Meta公司允许竞争对手在WhatsApp上使用人工智能聊天机器人，同时调查其滥用主导地位的可能性。Meta公司计划上诉，称该政策保护了其系统，但监管机构担心这会限制人工智能市场的竞争和创新。

Nvidia 宣布斥资 200 亿美元收购 Groq 的核心资产，这一具有里程碑意义的举措加强了 Nvidia 在人工智能芯片市场上的优势地位，并重塑了人工智能基础设施的竞争格局。

Keonne Rodriguez 是 Samourai Wallet 的联合创始人，他开始在联邦监狱服刑五年，并在圣诞节前分享了他最初几天的个人经历，描述了收监过程和适应监狱生活的情况。

菲律宾加大了对无证加密货币平台的打击力度，互联网服务提供商开始阻止全球主要交易所的访问，这标志着当地加密货币法规的执行将朝着更加严格的方向发生决定性的转变。

Pudgy Penguins 在为期一周的假日活动中，将其动画人物投影到拉斯维加斯球体上，推广其实体产品而非 NFT。尽管 NFT 市场举步维艰，但这一展示活动帮助这个诞生于加密货币的品牌接触到了主流受众，支持了商品销售并提高了知名度。

Kraken 正式推出了面向欧盟国家和英国居民的万事达加密借记卡--Krak 卡。Krak 卡将允许用户无缝消费 400 多种加密货币和法定货币。

在用户报告最近一次更新后出现未经授权的钱包流水后，Trust Wallet 证实其 Chrome 扩展程序 2.68 版受到安全事件影响。该公司告诉用户禁用扩展并立即升级，同时表示在调查期间其移动应用程序和其他版本不受影响。

在加密货币交易所 Binance 上市该国首个与索姆挂钩的稳定币之后，吉尔吉斯斯坦朝着将数字资产嵌入其金融体系的方向又迈出了一步，此举表明国家层面对基于区块链的支付和基础设施的信心日益增强。