About the project

Our Mission

onlytwenty.one is a professional Bitcoin monitoring platform that combines real-time data, analytical tools, and current news about Bitcoin. Our goal is to provide Bitcoin enthusiasts and investors with a reliable, clear, and ad-free platform.

We believe in transparency, privacy, and the importance of informed decisions in the Bitcoin ecosystem.

What We Offer

• Live Bitcoin Data: Real-time price, market cap, trading volume, and network statistics
• Analytical Tools: DCA calculator, What-If simulator, BTC/Fiat converter, and Fee calculator
• Mempool Visualization: Live overview of pending transactions and fee recommendations
• Bitcoin News: Automatically curated news in German and English
• Bilingual: Full support for German and English

Bitcoin News & Editorial Process

Our news section provides current Bitcoin news in German and English. All articles are synthesized from multiple established sources with the help of artificial intelligence and translated between the two languages — the entire process is transparently documented and AI usage is disclosed in line with the EU AI Act.

Our Process

1. Source Research: Regular scraping of curated RSS feeds from established Bitcoin publications. Only sources with a verifiable journalistic track record are included.
2. Topic Grouping: Related articles are combined into thematic groups based on content similarity. Groups don't have to be perfectly identical in topic — a shared point of reference is enough.
3. Content Synthesis: A full, original article is produced from a group with multiple sources. When only a single source is available, a brief is produced instead — a short post clearly marked as a single-source item. Either way: verbatim copying is explicitly prohibited, all statements are paraphrased, and every source used is linked transparently within the article.
4. Fact Verification: Numerical values, quotes and proper names are cross-checked against the original sources.
5. Translation: The article is translated between German and English while preserving the journalistic tone and technical terminology.
6. Image Generation: Matching article images are generated and served from our CDN.
7. Publication Prioritization: Articles are released over time based on a priority score (number of sources, depth of content, recency). This avoids publication spikes and surfaces more relevant articles sooner.

We recommend always verifying important information with the linked original sources.

Corrections Policy

If you find a factual inaccuracy in any article, please report it to hello@onlytwenty.one. We review every report and correct confirmed errors — with a clearly marked update notice and an updated timestamp on the affected article.

Data Sources

We run our own Bitcoin Full Node. Block, mempool, fee, and hashrate data is served primarily from our own full copy of the Bitcoin blockchain - no third-party trust for the core data on this site. A public fallback (mempool.space) takes over transparently during own-node maintenance or outages.

Sources at a glance:

• →Own Bitcoin Full Node: mempool, blocks, fees, hashrate, live tx stream (primary)
• →Mempool.space: Fallback for mempool/block data when our own node is unavailable
• →Coinbase: Live price updates (primary source, every 30 seconds)
• →CoinGecko: Market cap and volume data, historical prices
• →Blockchain.info: Price fallback when Coinbase is unavailable

Privacy & Transparency

• No Personal Data: We do not store any personal information
• Self-Hosted Analytics: Anonymous usage statistics via Anonyze (on our own servers)
• No Advertising: No sale of user data, no personalized advertising
• GDPR Compliant: Hosting and data processing in Europe

Technology

onlytwenty.one uses modern web technology for fast, reliable updates. The platform is continuously supplied with current data (update interval: 30 seconds) and is optimized for desktop and mobile use.