← the record

Proof: Can green jet fuel take off fast enough?

The record — the exact bytes that were hashed

{"first_seen":"2026-10-05T07:12:06Z","headline":"Can green jet fuel take off fast enough?","kind":"front-page-headline","rank":1,"source":"swissinfo","url":"https://www.swissinfo.ch/eng/emissions-reduction/can-green-jet-fuel-take-off-fast-enough/92080761","v":1}

Download headline-67f4fad9a9c1.json

SHA-256

67f4fad9a9c1e23132dd861648c9e14acff1d61cc7808502670fb4aee57d951a

OpenTimestamps

Confirmed in Bitcoin block 969978, mined 2026-10-05 07:22 UTC.

Download headline-67f4fad9a9c1.json.ots

Wayback Machine

• The record pageCaptured 2026-10-05 07:18 UTC — view the capture.
• The story pageCaptured 2026-10-05 07:18 UTC — view the capture.

Check it yourself — none of this needs this site

1. Hash the record: sha256sum headline-67f4fad9a9c1.json prints 67f4fad9a9c1e23132dd861648c9e14acff1d61cc7808502670fb4aee57d951a. Its first twelve characters are the end of this record's address.
2. Drop headline-67f4fad9a9c1.json and headline-67f4fad9a9c1.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-67f4fad9a9c1.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, 5 min after it was first seen.