#+title: Social Protocol Requirements - 08: Library
#+author: Amero Garcia
#+created: [2026-03-16 Mon 14:28]
#+DATE: 2026-03-14
#+ID: agora-requirements-07-library
#+STARTUP: content

:PROPERTIES:
:CREATED:  [2026-05-24 Sun]
:ID:       df02cddc-944a-4bcd-8ef5-f080870d5f49
:END:
* Library

** Concept

The Library is a unified content archiving and media management system. It works like a unified *arr suite (Sonarr, Radarr, Readarr, etc.) that builds your personal libraries across all content types.

** Supported Content Types

- Video (movies, TV shows, educational content)
- Audio (podcasts, music, audiobooks)
- Photos (personal albums, professional portfolios)
- Text (books, articles, documents)
- Maps (geographic data, custom itineraries)
- Physibles (physical object designs, 3D models)
- Manufacturing Processes (recipes, procedures, blueprints)

** Architecture

The Library consists of three core components:

*** Downloaders

- Content acquisition tools that fetch media from various sources
- Support for torrents, Usenet, direct downloads, and IPFS
- Integration with content discovery networks
- Automated quality selection and format conversion
- Metadata fetching from external databases

*** Indexers

- Local search and categorization of library content
- Full-text search across documents, subtitles, metadata
- Tag-based organization (genre, year, creator, etc.)
- Content deduplication via CID comparison
- Integration with [[id:1d074690-a279-59cb-b91d-e9a22ae104ad][Social Protocol]]'s discovery layer for shared content

*** Library Managers

- Content organization and presentation interfaces
- Unified browsing across all content types
- Playlist and collection creation
- Offline sync for mobile clients
- Sharing controls (personal, collective, public)

** Content Addressing

All Library content is stored as CIDs:
- Original files content-addressed for integrity
- Metadata stored as separate Content Objects
- Thumbnails and previews generated and addressed separately
- Version history maintained via CID chains

** Archiving

*** Concept

Archiving preserves Content Objects and open web content for long-term access, creating personal or collective knowledge repositories that outlive the ephemeral nature of streams.

*** CID Content Archiving

**** Personal Archives
- Users can archive any CID-based content they have access to (public or decrypted)
- Archive creates local copy with full CID verification
- Archived Content Objects retain original metadata and provenance
- Cross-references to related CIDs preserved

**** Collective Archives
- Library Collectives can curate themed archives (e.g., "Climate Science", "Digital Art History")
- Distributed storage across multiple PDS nodes for redundancy
- Version tracking as Content Objects are updated

*** Open Web Archiving

**** Web Archiver Tools
- Archive any URL to content-addressed storage
- WARC (Web ARChive) format support for fidelity
- Text extraction for full-text indexing
- Media extraction and separate CID addressing

**** Link Rot Prevention
- Replace dead links with archived CID versions
- "Archive this" browser extension for one-click saving
- Automatic archival of links referenced in user's content

**** Archival Standards
- Memento Protocol support for temporal negotiation
- Archive verification via multiple sources (Wayback Machine, Archive.today, personal PDS)
- Content authenticity via hash verification against original

*** Integration with the Social Protocol

- Library content can be referenced in posts, messages, and profiles
- Content can be shared via Relays with appropriate encryption
- Micro-payments for premium content access
- Syndication to protocol-aware browsers and gateways

** Requirements

- The system MUST support unified content management across all media types.
- The system MUST content-address all library items via CID.
- The system MUST support local indexing for fast search.
- The system MUST allow content sharing via the protocol's social layer.
- The system MUST support offline access for synced content.
- The system MUST integrate with the protocol's economic layer for paid content.

** Related Documents

- Protocol Unified Content Primitive
- Protocol PDS & Relay Architecture