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Proof: Air quality in Singapore’s north, south back in moderate range

The record — the exact bytes that were hashed

{"first_seen":"2026-09-15T04:40:34Z","headline":"Air quality in Singapore’s north, south back in moderate range","kind":"front-page-headline","rank":1,"source":"straitstimes","url":"https://www.straitstimes.com/singapore/air-quality-in-all-5-regions-of-singapore-in-the-unhealthy-range?ref=top-stories","v":1}

Download headline-8e331761e505.json

SHA-256

8e331761e5052c026a786d07ff3fb86274a5b74204963c1286d35d6d3eb82637

OpenTimestamps

Not sealed.

Wayback Machine

• The record pageNot sealed — no capture of this page was requested.
• The story pageNot sealed — no capture of the story page was requested.

Check it yourself — none of this needs this site

1. Hash the record: sha256sum headline-8e331761e505.json prints 8e331761e5052c026a786d07ff3fb86274a5b74204963c1286d35d6d3eb82637. Its first twelve characters are the end of this record's address.
2. There is no OpenTimestamps receipt for this record yet.
3. Open the Wayback Machine's captures above: the capture of the record page shows this hash as it stood then, and the capture of the story page shows the newsroom's own page.

This headline has not been sealed. Headlines are sealed automatically within minutes of first being seen; older ones are sealed on request, and are then marked as a backfill.