OpenTechnical

OT-2026-000005800

Publication integrity record

Bellows cup vacuum gripper, two zone face, pump fed, pressure verified, vented after set down

This page is the evidence record. It changes as evidence arrives: a trusted timestamp, an independent retrieval, a custody deposit. The disclosure itself (/p/OT-2026-000005800) never changes.

Identity and time

Publication numberOT-2026-000005800 · never reused
Internal UUID01a0a945-4a79-7058-9362-978000b08ede · UUIDv7, RFC 9562
Publication timestamp2026-09-16T08:11:25.692984Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000005800
StatusPUBLIC

Content hashes

Canonical text71576233d973821475252f24e999798ff17b74e0b902538d098f9c426637557b
Markdownc3d06996ee45ac984242f53c7044c97c6e9715aef57c308123290aab0d454f4f
PDF
Publication page6680ae332bbdddc619811f0e1df4b7c6da19fb2f26437f09321ab1a5fcb1eba4
Manifest2791d52142b856bea709128e08494d93421e3dcd440b7ed3a86a683373620f0e

SHA-256, lowercase hex, over the exact bytes of each published file. Every figure is hashed individually in the manifest.

Manifest signature

AlgorithmEd25519 · key OT-SIGN-2026-01 · Verified
SignaturesqPr41DNNx79wwhbdM4p+SkmkPTBFvoru187MUR4FLp6KoilLnV+7h8RMxJK3pb4On07gJ68+m87XBAUib/YBw==
Public key/integrity/keys · every key we have ever used stays published

Trusted external timestamp

timestamp.digicert.com2026-09-16T08:27:03Z
batch OT-TS-2026-W38-012 · RFC 3161 token · inclusion proof
root dbe93cb6b2158496df2f60f3b6822537...

Independent retrieval

2026-09-16T08:20:31.485614ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000005800
observed 6680ae332bbdddc619811f0e1df4b7c6...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-16T08:20:31.471471ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000005800/manifest.json
observed 2791d52142b856bea709128e08494d93...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-16T08:20:31.458899ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000005800/publication.md
observed c3d06996ee45ac984242f53c7044c97c...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-16T08:20:31.441190ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000005800/publication.txt
observed 71576233d973821475252f24e999798f...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139

Requested from infrastructure separate from the publication system, over the public internet, with no credential. A MATCH means an ordinary internet client could fetch the publication and received exactly the bytes recorded above.

Independent archive

External archivePending Canonical URLs are submitted to an independent archive in batches.

A capture held by an outside archive is evidence that does not depend on OpenTechnical continuing to exist. It supplements the records above; it does not replace them.

Third-party custody

Custody packagePending Custody packages are produced weekly.