Implement VDF applications for time-locked proof mechanisms**

[jobbykings]

Create advanced VDF applications for time-locked proof mechanisms, sequential computation verification, and time-based proof release.

Requirements:
VDF application implementation
Time-locked proof mechanisms
Sequential computation verification
Time-based proof release
VDF security verification
Time-lock efficiency optimization

Acceptance Criteria:
GIVEN VDF application, WHEN used, THEN time-locking is cryptographically guaranteed
GIVEN time-locked proof, WHEN created, THEN release time is verifiable
GIVEN sequential computation, WHEN verified, THEN parallel computation is impossible
GIVEN time-based release, WHEN implemented, THEN proof becomes available at predetermined time
GIVEN efficiency optimization, WHEN applied, THEN VDF computation is reasonably fast

Files to Work On:

Backend:

backend/src/vdfapplications/VDFApplications.ts (new)
backend/src/vdfapplications/TimeLocker.ts (new)
backend/src/vdfapplications/SequentialVerifier.ts (new)
backend/src/vdfapplications/TimeReleaser.ts (new)
backend/src/services/VDFApplicationService.ts (new)

Frontend:

frontend/src/components/VDFApplications/TimeLock.tsx (new)
frontend/src/components/VDFApplications/SequentialVerification.tsx (new)