Pith Number

pith:2OVGYSWM

pith:1994:2OVGYSWMUKMDYL7VSMS4XUXQAO

not attested not anchored not stored refs pending

An Optical Corrector Design That Allows a Fixed Telescope to Access a Large Region of the Sky

E.F. Borra, G. Moretto, M. Wang

arxiv:astro-ph/9410019 v1 · 1994-10-05 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2OVGYSWMUKMDYL7VSMS4XUXQAO}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-04T14:14:30.039338Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3aa6c4acca2983c2ff59325cbd2f003bc04017c4470f662d2ee9d82dd186ecd

Aliases

arxiv: astro-ph/9410019 · arxiv_version: astro-ph/9410019v1 · doi: 10.48550/arxiv.astro-ph/9410019 · pith_short_12: 2OVGYSWMUKMD · pith_short_16: 2OVGYSWMUKMDYL7V · pith_short_8: 2OVGYSWM

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/2OVGYSWMUKMDYL7VSMS4XUXQAO \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: d3aa6c4acca2983c2ff59325cbd2f003bc04017c4470f662d2ee9d82dd186ecd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f4784982453a7e8c082a82d6ea2d531fc534024f777ac085fed55e882bc0a065",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1994-10-05T21:02:12Z",
    "title_canon_sha256": "98d919dfe4359632e7d3c3dc65f3c79335da920de9a3565dbff4f93c7a25cbb9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9410019",
    "kind": "arxiv",
    "version": 1
  }
}