39C3 Hub Digital Badges
The 39C3 info pages documented a Hub badge system where participants could collect assembly-created digital badges via redeem tokens, profile assignment, QR codes, and challenge or visit workflows.
Chaos Communication Congress
39th Chaos Communication Congress
The December 27-30, 2025 Hamburg Chaos Communication Congress whose official info pages documented a Hub badge system for assembly-created digital souvenirs, challenge rewards, and help/exploration badges.
Hamburg · Germany · 2025
39C3 Cyberwatch Badge
An electronic badge created for 39C3 as a modular, solderable watch-style device. The project was designed to be reconfigurable with interchangeable daughter boards (called shards) for different use cases.
Lifecycle
Add-ons & Upgrades
39C3 Cyberwatch Badge
source-backed
LoRa shard path
Project documentation and README material link a LoRa expansion shard to an adapted Meshtastic path, indicating an explicit long-range radio capability target.
39C3 Cyberwatch Badge
source-backed
Modular watch architecture
The 39C3 Cyberwatch project is documented as a solderable watch-style base badge that is designed to accept interchangeable shard boards through a modular hardware concept.
39C3 Cyberwatch Badge
source-backed
SD-card shard interface
The project documentation describes an SD-card form-factor interface used to carry modular add-on boards in place of fixed accessory ports.
39C3 Cyberwatch Badge
needs completion
Firmware expectation context
Project sources indicate a base firmware expectation around congress time and a prebuilt firmware trail for shard use, but they do not confirm a complete public production release artifact set for all build variants.
39C3 Hub Digital Badges
source-backed
Assembly-created badge categories
The 39C3 documentation lists General, Explore, and Help categories for badges created by assemblies through the Hub backoffice.
39C3 Hub Digital Badges
source-backed
Profile visibility and management controls
The 39C3 page documents Hub profile display, pending badge acceptance, default visibility, per-badge visibility choices, and badge management controls.
39C3 Hub Digital Badges
source-backed
Redeem-token and QR workflow
The 39C3 page says assemblies could provide redeem tokens with URLs and QR codes so participants could collect badges through the Hub.
Operational history
Issues & Camp Impact
The recovered public page documents how 39C3 Hub badges worked but does not expose a stable post-event public catalogue of every created badge name in this pass.
The record preserves the system-level artifact without inventing individual badge names, counts, icons, or assembly-specific rewards.
The source describes badges created by assemblies, redeemed through tokens or manual assignment, and shown on Hub profiles, not physical or electronic admission badges.
The catalogue models this as an official digital/community badge workflow and avoids hardware claims.
No 39C3 Hub badge image is published because no reusable badge artwork, icon set, or screenshot provenance has been cleared with source URL, license or permission basis, attribution, and processing notes.
The record stays image-free rather than copying Hub UI screenshots, logos, badge icons, event graphics, or generated approximations.
No 39C3 Cyberwatch badge image is published because the recovered public sources and documentation do not provide a complete reuse basis for an official reusable photograph, attribution, and processing notes.
The entry remains image-free rather than copying unknown-rights project media, generated previews, or social/press photos.
The current source trail shows a complete project concept and extension design, but public recovery in this pass does not fully prove how broadly distributed Cyberwatch badges were or document a complete attendance-wide shipping ledger.
The dossier records what is sourced—badge architecture and shard concept—without over-claiming circulation or official distribution scope.
Sources mention expected base firmware and linked firmware material but do not establish a single canonical, fully documented OTA/app ecosystem for all shard variants in this source pass.
The software record stays tied to the published architecture and shard references instead of inventing an endpoint, app-store, or locked release stream model.
Resources
39C3 Badges and you
official badge workflow documentation · Official info page documenting participant badge collection, redeem tokens, profile display, assembly backoffice badge creation, badge categories, QR codes, and Hub visibility controls.
39C3 info pages
official event page · Official event info source for 39C3 POWER CYCLES in Hamburg, December 27-30, 2025, and the Hub navigation that includes Badges and you.
39C3 Cyberwatch project page
official project page · Primary 39C3 assembly project page documenting the Cyberwatch modular smartwatch concept.
39C3-release_board README
technical documentation · Raw repository README for the 39C3 release-board hardware and shard references.
Cyberwatch documentation
technical documentation · Project documentation covering the SD-card shard interface, shard-based hardware extension model, and configuration path.
Sources
39th Chaos Communication Congress Infos: Badges and you
Retrieved 2026-05-15 · Primary official source for Hub digital badge collection, token redemption, profile management, assembly-created badges, categories, and backoffice workflow.
Chaos Communication Congress: 39C3 Cyberwatch project page
Retrieved 2026-05-15 · Primary official project page for the 39C3 Cyberwatch hardware concept and event context.
Chaos Communication Congress: 39th Chaos Communication Congress Infos
Retrieved 2026-05-15 · Official event source for 39C3 POWER CYCLES in Hamburg, December 27-30, 2025, and the Hub navigation surface.
Codeberg: 39C3-release_board repository
Retrieved 2026-05-15 · Primary repository source linked from project docs for CAD references, firmware, and supporting project assets.
Codeberg: Cyberwatch documentation
Retrieved 2026-05-15 · Public project documentation describing the modular shard concept and software/firmware build notes.
Codeberg: cyberwatch/39C3-release_board README
Retrieved 2026-05-15 · Raw public README describing hardware layout, SD-card sharding design, and branch of modular watch extensions.