# On Top of Ruins

> My thoughts on engineering, cryptography, protocols and AI

## Recent Posts

- [A Closer Look at the Security Concerns On Ledger Recover](https://paragraph.com/@kc/on-ledger-recover): Is Ledger's new seed phrase recovery service a backdoor?
- [Content Moderation Trilemma of the Social Internet](https://paragraph.com/@kc/content-moderation-of-social-internet): And why Mastodon is a dead end?
- [AT Protocol vs Farcaster](https://paragraph.com/@kc/atproto-vs-farcaster): Technical comparison of two decentralized social protocols

## Blog Information

- [Homepage](https://paragraph.com/@kc/): Main blog page
- [RSS Feed](https://api.paragraph.com/blogs/rss/@kc): Subscribe to updates
- [Twitter](https://twitter.com/kcchu_): Follow on Twitter

## Optional

- [All Posts](https://paragraph.com/@kc/): Complete post archive
- [Sitemap](https://paragraph.com/@kc/sitemap-index.xml): XML sitemap for crawlers