スクリーンショットは証拠にならない——本当の証拠とは

Every creator thinks a screenshot is proof. It's the first thing people grab when they discover their work has been copied. And it's the first thing that falls apart under scrutiny.

Why Screenshots Fail

Screenshots can be created or modified in under a minute with basic tools. Dates can be changed. Content can be altered. Browser developer tools allow anyone to modify what a webpage displays before screenshotting it.

Courts, platforms, and dispute resolution bodies know this. A screenshot alone — without supporting evidence — is treated as circumstantial at best. In formal disputes, it's often given no weight at all.

What Actually Counts as Proof

Proof that holds up has three properties: it's independently verifiable (anyone can confirm it), it's tamper-evident (any modification would be detectable), and it's time-bound (it establishes when, not just what).

Blockchain timestamps meet all three criteria. The fingerprint is mathematically tied to your specific file. The timestamp is recorded on a public, immutable ledger. And anyone — clients, platforms, lawyers, judges — can verify it independently without relying on your word.

Screenshots as Supporting Evidence

Screenshots still have a role: documenting where infringement appears, capturing context, and preserving evidence of the infringing use. But they should support your primary evidence (timestamps, registrations), not be your primary evidence.

Think of it this way: a screenshot shows what you saw. A timestamp proves when your work existed. You need both, but the timestamp is the one that actually moves the needle.