Pith Number

pith:5ZBQ2S5Y

pith:1994:5ZBQ2S5YEXF5UZ4AZBVUUTPRDQ

not attested not anchored not stored refs pending

An Optical Interferometer with Wavelength Dispersion

J.G. Robertson, R.G. Marson, T.R. Bedding

arxiv:astro-ph/9404001 v1 · 1994-04-04 · 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{5ZBQ2S5YEXF5UZ4AZBVUUTPRDQ}

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	2026-05-18T04:21:41.257599Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ee430d4bb825cbda6780c86b4a4df11c3464c454dfc075c1dff2922a22b07567

Aliases

arxiv: astro-ph/9404001 · arxiv_version: astro-ph/9404001v1 · doi: 10.48550/arxiv.astro-ph/9404001 · pith_short_12: 5ZBQ2S5YEXF5 · pith_short_16: 5ZBQ2S5YEXF5UZ4A · pith_short_8: 5ZBQ2S5Y

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/5ZBQ2S5YEXF5UZ4AZBVUUTPRDQ \
  | 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: ee430d4bb825cbda6780c86b4a4df11c3464c454dfc075c1dff2922a22b07567

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "95711df1b1ed82ae2ae1365be5a60aed0ecb8943e937dc7b43c22f8a1db424f9",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1994-04-04T15:22:36Z",
    "title_canon_sha256": "9c875e940c6b8e550949e2cd8bc971e19fc5b6471d0a22846e6913fe2935dced"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9404001",
    "kind": "arxiv",
    "version": 1
  }
}