Decentralized social media platforms are gaining attention as alternatives to centralized platforms like X and Facebook. Este artﾃｭculo explores Bluesky, Nostr, and the broader decentralized social media movement.

Problems with Centralized Social Media

Centralized platforms have inherent problems. A single company controls your account, your data, and your feed algorithm. Accounts can be suspended at the company’s discretion. Algorithms are optimized for engagement and advertising revenue rather than user benefit. User data is stored on corporate servers, raising privacy concerns.

What Decentralized Social Media Offers

Decentralized social media uses protocol-based networks where multiple independent servers communicate with each other, similar to email. Gmail users can email Outlook users because they all use the same protocol (SMTP). Decentralized social media applies this same principle to social networking.

Bluesky

Bluesky is a decentralized social network backed by Twitter co-founder Jack Dorsey. It uses the AT Protocol, which emphasizes data portability—users can move their account and data between different service providers. As of 2025, Bluesky has approximately 30 million users and is growing rapidly in Japan.

Mastodon

Mastodon uses the ActivityPub protocol and was the pioneer of decentralized social networking. Each server (instance) has its own community rules. Users can choose an instance that matches their interests. Mastodon is popular among European researchers and creators.

Nostr

Nostr is the simplest decentralized protocol, using cryptographic keys with no central servers required. It is particularly popular in the Bitcoin community.

Resumen

Decentralized social media offers censorship resistance, user data ownership, and algorithm choice. As usability improves and user numbers grow, they could become a mainstream alternative to centralized platforms.