> For the complete documentation index, see [llms.txt](https://tlock.gitbook.io/tlock/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://tlock.gitbook.io/tlock/welcome/what-is-tlock.md). # What is Tlock TLOCK is an application‑specific blockchain built on the Cosmos SDK that powers a fully decentralized social media platform, engineered for resilience to safeguard freedom of speech. ### What is Different * **On-chain Instant Search** – millisecond look-ups across people, hashtag, community, and topics (no external indexer) * **On-chain Personalized Feed** – hyper-personal, keyword-level, interest-based “For You” for every wallet * **On-chain Reputation Layer** – verifiable scores, Sybil-resistant, instant content rewards * **On-chain Real-time Ad Bidding** – transparent & prepaid slot ranking ### How It Works Users can create profiles, post stories, build connections, and like or comment on posts directly on-chain. To streamline user interactions, gas fees can be paid by the system account if a periodic allowance is granted to the user. Each of these transactions triggers real-time sorting of recommended posts, trending topics, categories, and communities, enabling dynamic content updates, with content quality measured by accumulated reputation scores. Inevitably, it introduces challenges including on-chain storage, token onboarding, Sybil resistance, indexing and sorting, and content moderation, which will be discussed in detail. TLOCK meets these challenges with a hybrid approach: a censorship-resistant on-chain core, plus an optional service layer—AI translation, auto-hashtags, human checks etc. —that improves UX without compromising the decentralized core. ### Quick Links Official Site: [https://tlock.org](https://tlock.org/) GitHub: X.com(Twitter): Telegram: Documentation: