Finnish Homes Heated by Bitcoin Miners, Provided BTC Stays Above $70,000

A Finnish startup has deployed 30 bitcoin mining systems that function as central heating for homes. At current bitcoin prices, each system generates slightly more revenue than the electricity it consumes. The arrangement's economics depend on bitcoin remaining above roughly $70,000. The article's central point is that mining heat can be repurposed to provide residents with heating that is effectively free while the price holds.

Saifuban adds daily API budgets to cap runaway AI agent spending

A developer built a daily API spending cap into Saifuban, a guard tool for AI agents, after worrying about agents stuck in loops running up large bills overnight. Users store their provider API key in Saifuban and receive a proxy key, which the agent uses so that all requests route through the service. Saifuban tallies each request's cost from the usage data in responses and, once a per-agent daily budget is reached, returns a 403 error instead of forwarding further calls until the next day. The cap supports OpenAI, Anthropic, Google Gemini, and OpenRouter, with costs calculated from token counts and price tables for all but OpenRouter, which reports actual cost. Requests already in flight when the limit is hit may push spending slightly over budget, and users must trust the tool with their real API keys, which are stored encrypted.

Indie Builder Automates Nine-Product Gumroad Launch With 20 Node Scripts, Reports Zero Sales

An indie developer launched nine digital products on Gumroad and used roughly 20 single-purpose Node scripts to automate posting, logins, verification-code retrieval, and analytics checks. The setup relies on Chrome DevTools Protocol via playwright-core with a persistent browser profile, with each task spawning and closing its own browser instance to avoid crashes. After eight days, the store had 74 views, no sales, and one follower. The author documented techniques such as extracting login codes from webmail and working around a community platform that dropped email signup in favor of Google OAuth. The post is shared as a technical account of what was automated and what failed, and it includes links to the author's own store.

Developer Uses Parallel Claude Code Agents to Generate Hundreds of Chinese Career Stories

A developer built a free browser game, One Job, One Life, in which players draw a random Chinese job card and live it year by year until retirement. The game's stories and rules were written ahead of time with Claude Code, so gameplay itself requires no per-play AI cost. Place and employer shape each career's pay curve and advancement ceiling, and AI gradually takes over specific tasks rather than whole jobs. The author used multiple agents working in parallel, each producing and validating career drafts against an occupation dataset. The write-up also describes problems that came up when one agent's error affected the shared build script.

SteamVR améliore la netteté du streaming VR, et des outils de biologie moléculaire en VR en profitent

Valve a publié une mise à jour bêta de SteamVR qui améliore la qualité d'image du streaming via Steam Link vers les casques autonomes comme Meta Quest, HTC Vive Focus et PICO. L'article présente cette évolution technique comme un progrès pour les usages non ludiques de la réalité virtuelle. Il met en avant la visualisation de structures moléculaires, où la netteté des détails et la navigation physique autour d'une protéine remplacent la manipulation à la souris. Le laboratoire NexoPeek, développé par Seven Sportz pour Meta Quest, illustre ce potentiel avec douze visites narrées couvrant la biotechnologie, de l'hémoglobine à CRISPR-Cas9. La question posée est de savoir quels contenus éducatifs ou scientifiques justifient désormais l'investissement dans la VR.

Developer builds Pong: Chaos Edition with 145 random events and mini-games

A developer created Pong: Chaos Edition, a Python and Pygame remake of Pong meant to be more unpredictable for offline play. The game adds temporary events that change rules, such as extra balls, resized paddles, and control interference, along with an ownership-based modifier system so overlapping effects can be cleanly removed. Some events trigger full mini-games, including platforming, football, tank battles, Snake, chess, quizzes, typing challenges, and a small first-person shooter called PONGDOOM, with results able to affect the main match. The project also features a retro arcade look built around a custom 5x7 bitmap font and scanlines, plus procedurally generated sound effects and music. The source code is publicly available on GitHub.

Part 1 of a Guide on Proving Equations Using Diagrams

A Hacker News post links to the first part of a series on proving equations with diagrams, hosted on epatters.org. The linked article is titled as part one, indicating it introduces the approach and is followed by further installments. The submission has received 9 points, with no comments at the time it was listed. The source material provided contains only the title, link, and engagement metrics, so the specific techniques and examples covered in the article are not described here.

Study of 369 crypto prop firm reviews finds payout complaints in about 15% of sample

A researcher hand-coded 369 recent Trustpilot reviews of twenty crypto prop firms, marking whether each was negative and whether it described a payout problem such as a refusal, unexplained delay, deduction, or closed account. Of the reviews, 148 were negative and 54, about 15%, described payout issues. The author cautions that the sample lacks a denominator, so it cannot give a complaint rate, since larger firms naturally receive more reviews. Per-firm counts varied widely, with AquaFunded having 13 of its 20 reviews describing payout problems and five firms showing none. The author also notes that eight profiles displayed no Trustpilot score, and presents the coded data as a checkable triage tool rather than a verdict on any firm's conduct.

Necoz Launches Official DEV Presence for Project Updates and TypeScript Tooling

The necoz-oss ecosystem has launched an official organization account on DEV, the developer community platform. The account will share project updates, TypeScript tooling news, and community highlights. The announcement was posted by nyaomaru, who is building the project with the Necoz team. The post, published November 8, was brief and framed the move as a step toward collaborative development. It drew 16 reactions and some comments from readers.

Developer Tests 100+ Free Directories to Promote a Browser-Based PDF Tool Suite

A developer who builds free, browser-only PDF tools logged submissions to more than 100 free directories and launch boards over a month. Only a small group of directories listed the site quickly and without requirements such as accounts, payments, or badges. Many others were effectively paywalled, requiring a homepage badge or paid plan at the final step, while some had shifted from free to paid listings. Several also rejected free hosting subdomains or non-corporate email addresses, and many sign-in flows failed due to expiring codes.

Handoff Proposes Trustless USDC Escrow on Solana for Digital Asset Sales

Handoff is a proposed escrow protocol on Solana designed to address trust problems in online sales of digital goods such as API keys, code, and accounts. Under its model, a buyer locks USDC in a smart contract, and the seller then accepts the deal and delivers the asset. The buyer gets a time-limited window to inspect the item, with funds released to the seller upon approval, refunded if the seller fails to deliver, or frozen for dispute if the asset proves fake. The smart contract, built with Anchor in Rust, enforces a defined lifecycle from initialization through completion or dispute. The project's frontend uses React, Vite, TypeScript, and Tailwind CSS with Phantom Wallet integration.

California voters reject billionaire wealth tax backed by Sergey Brin

Voters in California have turned down Proposition 40, a ballot measure that would have levied a one-time tax on billionaires. Large donations from wealthy figures, including Sergey Brin, played a notable role in shaping the result. Although the proposal drew backing in major cities such as San Francisco and Los Angeles, voters in Silicon Valley largely opposed it. Opponents also placed counterpropositions on the ballot to help secure its defeat.

Guide Outlines Fixes for Common PHP Website Vulnerabilities

A DEV Community article explains how to address common security weaknesses in PHP websites, focusing on input validation, session handling, and safe file inclusion. It highlights the risk of malicious file uploads that can enable code execution, and recommends checking MIME type and file extension, citing PHP documentation. Session hijacking and fixation are addressed through session ID regeneration and secure cookie parameters. The piece also advises against using user-supplied data in include statements and suggests regular patching and a Web Application Firewall to reduce exposure.

Woman found dead at Gorakhpur finance office; family alleges murder

A 20-year-old woman was found hanging inside a finance company office in Gorakhpur. Her mother discovered her after searching for her and arriving at the office. The family has alleged the death was a murder and has named the office manager as a suspect. Villagers protested outside the company, demanding a thorough investigation into the case.

Linkit: a free desktop bookmark manager that summarizes and semantically searches saved links

The developer built Linkit, a free desktop bookmark manager, after struggling to find links they had saved. Unlike browser bookmarks, which store only a URL, Linkit fetches each saved link and generates a summary and key takeaways. Its search matches on meaning via vector embeddings rather than exact keywords, and it can render the library as an interactive knowledge graph. The app also offers AI-curated collections, duplicate detection, and background link health checks. Recent updates include improved interface scaling, safer storage switching, and more reliable import and export.

At least 21 dead after migrant boat sinks off Senegal's northwestern coast

VR 분자 뷰어 NexoPeek, 구조 데이터 검토 병목을 한 공간으로 묶다

구글 딥마인드가 Google Antigravity for Science로 항균 펩타이드 탐색을 가속한 연구를 공개하면서, 분석 파이프라인 마지막 단계인 사람의 결과 검토 방식이 주목받고 있다. 글쓴이는 검색과 예측은 자동화됐지만 .pdb 같은 구조 파일을 여러 도구와 탭을 오가며 확인하는 과정은 여전히 느리다고 지적한다. 이를 해결하려는 사례로 Meta Quest용 VR 분자 실험실 NexoPeek이 소개되며, 유전자 이름 기반 검색, 로컬 파일 로드, 표현 프리셋 전환, 포켓 예측, 거리 측정 등을 하나의 공간에 모은다고 설명한다. 다만 대용량 궤적 데이터는 VR 렌더링 예산 면에서 한계가 있다고 언급된다. 필자는 해당 소프트웨어가 교육 및 연구 시각화용이며 의학적 조언이나 진단 목적이 아니라고 밝힌다.

Chicago's 1893 World's Fair Offered a Two-Speed Moving Sidewalk for Five Cents

A historical feature of the 1893 World's Fair in Chicago has been recalled: a moving sidewalk with two speeds. Visitors could ride it for five cents. The attraction was one of the fair's novel transportation options for crowds touring the grounds. The fair, formally the World's Columbian Exposition, drew large numbers of visitors and showcased emerging technology. The article highlights this early form of people-moving technology as a curiosity of the era.

Fire at Najafgarh garment factory in Delhi; 25 fire tenders deployed

A major fire broke out at a garment factory in the Nangli Sakrawati area of Delhi's Najafgarh region on Sunday. Delhi Fire Services received the call at around 4:22 pm and responded immediately. Twenty-five fire tenders were sent to the site to bring the blaze under control. The article does not report on casualties, the cause of the fire, or the extent of damage.

Trump Aide Katie Zacharia Exits White House Press Secretary Role After Under a Week

The White House press secretary position has been empty since October 16, when Katie Zacharia departed after serving less than a week. President Trump had named Zacharia on October 9 to succeed Karoline Leavitt, who was the youngest person ever to hold the job. Leavitt was a longtime member of Trump's inner circle before her departure. The article places Zacharia's brief tenure in the context of an earlier mix-up involving a 2020 Four Seasons event.