OpenTechnical

OT-2026-000028385

Publication integrity record

Four cup vacuum gripper, four outlet manifold, pump fed, manifold pressure sensor, sustained blow-off before 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-2026-000028385) never changes.

Identity and time

Publication numberOT-2026-000028385 · never reused
Internal UUID01a0ae72-e2f5-7ca5-b2dd-dec0d8cb9a6d · UUIDv7, RFC 9562
Publication timestamp2026-09-17T08:19:19.949572Z
Recorded by the publication infrastructure in UTC, not taken from the submission.
Canonical URLhttps://opentechnical.org/p/OT-2026-000028385
StatusPUBLIC

Content hashes

Canonical text77fd69f234a19844942f5ef33768fb9d30a3723f11aa2ae7349a61133686d51b
Markdownd7fc733918baef499a7d9aa8a90fafbdb1d1755ec9bcae124de1f8d13830a9a8
PDF
Publication pagec36b6729a1db1b91f6e489d89074f45aca8d6c11fb7ff8af3fb0c4e2d6b59f29
Manifestfff15fdb9ba9c5d62d1555dab1c618c625827f6ee17da6e9d201cc10432fc700

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
Signaturevmf772SeZ4qXYScJLQho9L2uG542nz1JT3t4f9vLOwvev/9j5bhwcW3QHwa4uUykcdnpVd783SnQQSEHUVPDBQ==
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

2026-09-17T11:40:24.128679ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000028385
observed c36b6729a1db1b91f6e489d89074f45a...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:40:24.109506ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000028385/manifest.json
observed fff15fdb9ba9c5d62d1555dab1c618c6...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:40:24.073925ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000028385/publication.md
observed d7fc733918baef499a7d9aa8a90fafbd...
fetched by instance-3.rotem.ai from 34.69.0.72, which resolved the name to 35.239.157.139
2026-09-17T11:40:24.055577ZHTTP 200 · MATCH
https://opentechnical.org/p/OT-2026-000028385/publication.txt
observed 77fd69f234a19844942f5ef33768fb9d...
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.