Building a Privacy-First URL Shortener on Blockchain

说明与用途

作者构建了 Cryptly，一个使用 Cronos 区块链和客户端 AES-GCM 加密的 URL 缩短器。这防止了服务器端跟踪，并保护数据免受中心化数据库泄露的影响。

问题

Traditional URL shorteners log user IPs, timestamps, user agents, and destination URLs, tracking browsing patterns and selling data to advertisers. Additionally, centralized databases are vulnerable to hacking.

结果

A privacy-first URL shortener that eliminates server-side tracking and central database risks by using client-side encryption and blockchain storage.

工作流

• Client-side encryption of the destination URL using AES-GCM via the Web Crypto API.
• Storage of the encrypted URL on the Cronos blockchain for immutable, decentralized persistence.
• Browser fetches the encrypted data from the blockchain.
• Local decryption of the URL in the browser using the Web Crypto API.
• Redirection to the destination URL without server-side knowledge of the target.

证据

Server never sees destination URLs

来源

No database to leak

来源