For sign sessions, this column stores the reference to the keygen session
whose key shares should be used for signing.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Only username is required, all other fields (email, phone, public_key, etc.) are now optional.
Changes:
- Modified 001_init_schema.up.sql to remove NOT NULL constraints
- Added partial unique index for email (only for non-NULL values)
- Created migration 006_make_email_optional for existing databases
- Set default status to 'active'
This allows automatic account creation from keygen without requiring user info.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Add delegate_party_id column to track which party is acting as delegate
(generates and returns user share instead of storing it).
Changes:
- Add delegate_party_id VARCHAR(255) column with default empty string
- Add partial index for faster lookups when delegate party is present
- Include up and down migrations
This fixes the issue where delegate party selection worked but the delegate_party
field was not being returned in API responses due to missing database column.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Implement version-based optimistic locking to prevent concurrent update conflicts
when multiple parties simultaneously report completion during keygen operations.
Changes:
- Add version column to mpc_sessions table (migration 004)
- Add Version field to MPCSession entity
- Define ErrOptimisticLockConflict error
- Update SessionPostgresRepo.Update() to check version and increment on success
- Add automatic retry logic (max 3 attempts) to ReportCompletionUseCase
- Update Save and all query methods (FindByStatus, FindExpired, etc.) to handle version field
This replaces pessimistic locking (FOR UPDATE) with optimistic locking using
the industry-standard pattern: WHERE version = $n and checking rowsAffected.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Add SessionEventRepository interface for append-only event storage
- Implement PostgreSQL session_event_repo with immutable event log
- Add database migration for session_events table with indexes
- Record events for keygen and sign session creation
- Record events for signing-config APIs (set, update, clear)
- Wire up sessionEventRepo in main.go and account handler
- Update API documentation with event sourcing design
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Add signing-config API endpoints (POST/PUT/DELETE/GET) for configuring
which parties should participate in signing operations
- Add SigningParties field to Account entity with database migration
- Modify CreateSigningSession to use configured parties if set,
otherwise use all active parties (backward compatible)
- Add delegate party signing support: user provides encrypted share
at sign time for delegate party to use
- Update protobuf definitions for DelegateUserShare in session events
- Add ShareTypeDelegate to support hybrid custody model
API endpoints:
- POST /accounts/:id/signing-config - Set signing parties (first time)
- PUT /accounts/:id/signing-config - Update signing parties
- DELETE /accounts/:id/signing-config - Clear config (use all parties)
- GET /accounts/:id/signing-config - Get current configuration
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Remove Address field from PartyEndpoint (parties connect to router themselves)
- Update K8s Discovery to only manage PartyID and Role labels
- Add Party registration and SessionEvent protobuf definitions
- Implement PartyRegistry and SessionEventBroadcaster domain logic
- Add RegisterParty and SubscribeSessionEvents gRPC handlers
- Prepare infrastructure for party-driven MPC coordination
This is the first phase of migrating from coordinator-driven to party-driven
architecture following international MPC system design patterns.
hailin
Developer