Crypto Recall Oracle

Imagine someone losing the keys to a crypto wallet. Inspired by 'Memento', they only remember fragments - the year they bought it, the approximate amount, and maybe the exchange they used. Like the perpetual darkness in 'Nightfall', their crypto investment is lost forever if not found. Drawing inspiration from the 'Agricultural Prices' scraper, this project creates a 'Crypto Recall Oracle'. It’s a decentralized oracle network that uses historical cryptocurrency price data from publicly available APIs (CoinGecko, CoinMarketCap, etc.) to estimate the present-day value of 'lost' cryptocurrency holdings based on vague user-provided details (year bought, approx. amount, exchange used, etc.).

Story: A user inputs partial information about their lost crypto. The oracle queries historical price data. A smart contract uses a combination of factors (most likely coins held given the timeframe and exchange, price ranges at that time, etc.) to output a range of probable current values and potential coins held, along with potential recovery avenues (e.g., contacting the exchange's support with the details provided). This information gives the user a starting point for recovery efforts.

Concept: The oracle nodes are incentivized to provide accurate and timely historical price data. Users pay a small fee in cryptocurrency for the query. The fees are distributed among the oracle nodes based on their contribution to the accurate estimation. The system includes a reputation mechanism where nodes providing inaccurate information are penalized. Initially, the project relies on scraping historical data and storing it. As the user base grows, more advanced estimation methods (e.g., using AI/ML to fill in missing data points) can be incorporated.

How it works:
1. Data Collection: Scrape historical crypto price data from multiple sources, focusing on exchanges and coins frequently used.
2. Data Storage: Store the scraped data in a decentralized database or a readily accessible API.
3. Query Interface: Build a user-friendly interface where users can input partial information about their lost cryptocurrency.
4. Smart Contract Logic: Create a smart contract that takes user input, queries the price data, and estimates the current value.
5. Oracle Network: Implement an oracle network that validates and feeds the price data to the smart contract. Nodes are rewarded for correct data and penalized for incorrect data.
6. Reputation System: Design a reputation system to track the performance of oracle nodes.
7. Value estimation A process is put in place that returns the 'most likely' crypto held at the time, using the information provided (exchange, amount, and year).

Niche & Low Cost: Focuses on a specific problem – assisting in the recovery of lost crypto. The initial costs are low, primarily involving web scraping, API integration, and smart contract development. Decentralized storage could be used to minimize storage costs.

High Earning Potential: Charges fees for queries. As the project gains traction and becomes known for its accurate recovery assistance, demand increases, leading to higher revenue. Potential partnerships with exchanges and wallet recovery services can further boost earnings.