Factflew is a digital file certification service built with a strict focus on data minimization and user privacy.
Driven by the innovative "Unknow Your Customer" (UYC) architectural concept, Factflew does not require your name, email, phone number, or any identity verification for its core functionality. The system only interacts with a technical pseudonym โ a unique FF-code generated on your device.
How it works: Your source files never leave your device. The SHA-256 cryptographic hash is calculated locally on your device using the Web Crypto API. Only this digital fingerprint is transmitted to be registered permanently with a reliable timestamp in the Polygon blockchain network.
Key Features: โข True Anonymity: No registration, no tracking, and zero email collection. โข Local Processing: Maximum security as files are processed entirely on your device. โข Immutable Proof: Once confirmed on-chain, your certificate provides permanent, public verification of the file's existence at that exact moment. โข Flexible Pricing: Pay a flat rate of โฌ1 per single certificate or choose device-based unlimited subscription plans.
A startup from Vilnius, Lithuania that is founded by Oleg Shcherbakov.
Factflew is built on the UYC (Unknow Your Customer) architectural philosophy. It allows anonymous blockchain file-hash registration, ensuring absolute user data privacy without requiring unnecessary personal details, account creation, or KYC.
Unlike traditional timestamping or document-tracking services that demand your files or personal data be uploaded to centralized servers, Factflew operates on zero-knowledge and cryptographic principles. You retain full ownership, privacy, and control of your actual content while securing unalterable proof of existence.
Factflew was created out of a necessity to solve a fundamental flaw in modern digital infrastructure: the invasive requirement to surrender private data just to prove ownership. It was built from the ground up by an independent developer to put absolute data sovereignty back into the hands of the creator.
Cryptographic hashing (such as SHA-256) combined with secure public ledger/blockchain integration, designed with a minimalist and privacy-first web architecture.
Factflew serves a universal audience ranging from everyday consumers to professionals, driven by a common need to eliminate information asymmetry and secure undeniable proof in high-stakes moments: Everyday Consumers & Mass Market: People navigating high-value domestic risksโsuch as property rentals (check-in/check-out conditions), vehicle usage and parking incidents, purchases and returns, healthcare tracking, labor relations, and personal safety documentation. Professionals & Field Workers: Transport and logistics operators, educators, and service providers who need instant verification of assets, shift handovers, and cargo states. Tech-Savvy Creators & Developers: Independent creators, software engineers, and researchers requiring unalterable, privacy-first cryptographic timestamping for code versions, digital art, and intellectual property.
Factflew is built to protect individuals and professionals across diverse everyday risk scenarios rather than only traditional corporate clients. Key user groups include:
Everyday consumers managing property rentals, vehicle conditions, and purchase disputes
Drivers and logistics personnel logging transit and transport states
Independent creators, software developers, and researchers protecting intellectual property priority
Professionals in healthcare, education, and labor relations securing daily operational milestones and agreements
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Check the traffic stats of Factflew on SimilarWeb. The key metrics to look for are: monthly visits, average visit duration, pages per visit, and traffic by country. Moreoever, check the traffic sources. For example "Direct" traffic is a good sign.
Check the "Domain Rating" of Factflew on Ahrefs. The domain rating is a measure of the strength of a website's backlink profile on a scale from 0 to 100. It shows the strength of Factflew's backlink profile compared to the other websites. In most cases a domain rating of 60+ is considered good and 70+ is considered very good.
Check the "Domain Authority" of Factflew on MOZ. A website's domain authority (DA) is a search engine ranking score that predicts how well a website will rank on search engine result pages (SERPs). It is based on a 100-point logarithmic scale, with higher scores corresponding to a greater likelihood of ranking. This is another useful metric to check if a website is good.
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