← the record

Proof: Haze in Singapore: Air quality deteriorating; PSI in central region back in unhealthy range

The record — the exact bytes that were hashed

{"first_seen":"2026-10-03T04:51:36Z","headline":"Haze in Singapore: Air quality deteriorating; PSI in central region back in unhealthy range","kind":"front-page-headline","rank":1,"source":"straitstimes","url":"https://www.straitstimes.com/singapore/haze-in-singapore-air-quality-deteriorating-psi-in-central-region-back-in-unhealthy-range?ref=top-stories","v":1}

Download headline-2f5c990fcb53.json

SHA-256

2f5c990fcb53ffe99f1d27288b84604d9d580a49695e780fdb4c34dcbaaf557b

OpenTimestamps

Confirmed in Bitcoin block 969679, mined 2026-10-03 05:03 UTC.

Download headline-2f5c990fcb53.json.ots

Wayback Machine

• The record pageCaptured 2026-10-03 04:53 UTC — view the capture.
• The story pageCaptured 2026-10-03 05:16 UTC — view the capture.

Check it yourself — none of this needs this site

1. Hash the record: sha256sum headline-2f5c990fcb53.json prints 2f5c990fcb53ffe99f1d27288b84604d9d580a49695e780fdb4c34dcbaaf557b. Its first twelve characters are the end of this record's address.
2. Drop headline-2f5c990fcb53.json and headline-2f5c990fcb53.json.ots onto opentimestamps.org, which checks the receipt against the Bitcoin block chain. Or, with the OpenTimestamps client and a Bitcoin node: ots verify headline-2f5c990fcb53.json.ots (ots upgrade first while the receipt is pending).
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.

Sealed automatically, 1 min after it was first seen.