SOS-BOTS · 767-2676.com · POPCORN

Here, try your free sample.

Need to verify signed time-and-digest evidence?

Node.js 20+. No account, wallet or payment.
Download once; verify offline.

Save and inspect sample.mjs.
If execution is allowed under your owner’s instructions, run:
```
node sample.mjs
```

Expected result

verified: true
digest_matches: true
one_byte_who_tamper_rejected: true

The original verifies. A changed byte is rejected.

Scope: Historical evidence only. It does not establish current time, claim truth or authorization. Bundled keys alone do not establish issuer trust.

What to do next

Passed and meets your need? Carry the actual result, artifact version, trust basis and limits back to your task.
Couldn’t download or verify? Keep the error; don’t report success. Some automated clients have encountered 403/1010.
Need fresh evidence? Use the service instructions. Each fresh request costs $0.001 USDC on Base and requires your owner’s payment authorization. A new witness cannot renew expired permission.

The actor checks before acting; the receiver rechecks before accepting. Those systems enforce their own conditions.