Museum Image Access: Watermarked Derivatives Without Touching Master Files (3 Safeguards)
Short answer: Serve a watermarked derivative from a separate object, never rewrite the museum's master image. Keep the master immutable, make derivative creation idempotent, and let the portal publish only a validated, access-controlled thumbnail. That gives visitors responsive images while preserving the archival file byte for byte. I learned to treat this as a scheduling problem after a…
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