OpenTechnical

OT-2026-000020188

Publication integrity record

Single bellows cup vacuum gripper, two stage ejector, supply line pressure sensor, pulsed blow-off before set-down, on a tool changer

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-2026-000020188) never changes.

Identity and time

Publication numberOT-2026-000020188 · never reused
Internal UUID01a0ae6f-4379-7d4c-a6c3-2a692406f177 · UUIDv7, RFC 9562
Publication timestamp2026-09-17T08:15:22.507199Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000020188
StatusPUBLIC

Content hashes

Canonical text8bccd460f4fb4841d3c887631b614286eda2530264e652e4ecd0a392ff5a17d2
Markdown82c0b9350846621f17e1678f50dcda240371c678eb5d2b05c8b3883f32e44742
PDF
Publication page2d7aa44aeace11ebeed5d8765b70ba6fbfcd89f28411370436e4b67c8f7098b6
Manifest5bacc453625795d5fb570eaac4bc2915914c03813a594ed96196614364707df7

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
SignaturePJI9SIpisA3DTweRmTaI+SKzwYJeL/9TbzRN1NnubR1xP6zbL8TOQHjg/twY3IctgiDm7FGD0NtX8x5oxCWdDA==
Public key/integrity/keys · every key we have ever used stays published

Trusted external timestamp

timestamp.digicert.com2026-09-17T08:42:32Z
batch OT-TS-2026-W38-020 · RFC 3161 token · inclusion proof
root 7c99e0163c3f1d2dc0f1dec0442e2af7...

Independent retrieval

2026-09-17T11:56:30.846198ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000020188
observed 2d7aa44aeace11ebeed5d8765b70ba6f...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:56:30.828414ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000020188/manifest.json
observed 5bacc453625795d5fb570eaac4bc2915...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:56:30.810297ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000020188/publication.md
observed 82c0b9350846621f17e1678f50dcda24...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:56:30.792099ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000020188/publication.txt
observed 8bccd460f4fb4841d3c887631b614286...
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.