[weboko]

Draft of LP-0029, a private messenger Basecamp app built on the Logos Chat module.

Tracks logos-co/ecosystem#192.

Shape

Medium, same class as LP-0017. The crypto and protocols belong to chat_module and libchat (RD-chat), so this prize pays only for the app layer that is missing today:

• contacts shared as a string or QR code, with out-of-band key verification and a warning on key change
• encrypted attachments over Logos Storage, with the key sent inside the E2E message
• local database encryption, app lock and full wipe
• no network requests outside the Logos stack, plus a short privacy statement of what each party learns
• a reusable module for contacts, verification and attachments, so Deal Room and Multisig Chat can use it

Changes to the chat protocol or module are out of scope.

Gate

The prize can't open on chat_module v0.3.0: it creates a new identity on every launch. libchat already persists the installation (logos-chat#280). The draft opens once a module release ships that and works on testnet 0.4.

Adoption

Chat leaves no public trace and the app may not collect analytics, so the criteria use community use instead of counts:

• 3 independent communities (at least one a Logos Circle) using it for 2 months, each with a named steward
• the steward invites an evaluator into a group the community uses: at least 5 distinct members seen per community and 30 in total, over 2 weeks
• 10 non-author issues resolved
• testimonials, module reuse and an external review as discretionary

The thresholds are proposals. Groups are capped at 20 members (logos-chat#199), so the per-group numbers stay small.

Open points

• Prize amount left as $X.
• The chat module fetches key packages from an HTTP registry (devnet.chat-kc.logos.co). The draft counts it as part of the Logos stack, which conflicts with the usual "no centralised server" rule. Needs a call.
• Is an evaluator joining a community's group acceptable as verification, or too intrusive for a privacy app?
• Number: 0027 and 0028 are in LP-0027: Atomic-Swap Maker Operator Kit — three independent testnet makers #165 and LP-0028: Sustained Atomic-Swap Maker Operation on the Logos testnet #166.

[github-actions]

✅ Validation passed

A reviewer will assess against the prize criteria.
ℹ️ Prize proposal for LP-0029.

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Automated check. See solution template and TERMS.