The last year has shown us just how badly we need reliable sources for journalism, but fact-checking every one of the infinite stories from all the websites on the internet is a monumental task. Tools in computing can only get us so far: neural networks might be able to pick up some linguistic patterns in some cases, but how could they catch intentional, well-written deception? What would their standards be for calling a fact "verified?" And who decides?
Lie Ledger is a crowd-sourced solution to this problem. It lives on the blockchain, so all contributions will remain censorship-free and internationally available. It also has incentives built in for making quality contributions, and safe-guards against troll takeovers.
The blockchain backend is almost like an API, and, once complete, will be accessible from any number of independent JavaScript applications by way of the Web3 library. Some examples: a browser extension that would compare a user's current page with the repository of corrections and show a notification if they match, a native mobile app that would do the same, analysis applications on the most frequently corrected sources, etc.
There will be a similar JavaScript GUI to submit corrections to the ledger once the contracts are deployed.
Any way you want. There are some issues registered above in reference to the execution of the blockchain architecture and the payment algorithm. If you're not familiar with Solidity, feel free to reach out, and we can talk about getting some front-end implementations under way concurrently.