Pith Number

pith:JV2F2UUO

pith:1999:JV2F2UUOPP3XYAABDZBNE4FNDA

not attested not anchored not stored refs pending

The ROSAT Deep Survey: III. Optical spectral properties of X-ray sources in the Lockman Hole

(2) Caltech, (3) Princeton University Observatory, (4) Pennsylvania State University, (5) ESO, (6) MPI fuer extraterr. Physik, (7) Osservatorio Astronomico Bologna), D.P. Schneider (4), G. Hasinger (1), G. Zamorani (7) ((1) Astrophysikalisches Institut Potsdam, I. Lehmann (1), J.E. Gunn (3), J. Truemper (6), M. McCaughrean (1), M. Schmidt (2), R. Giacconi (5)

arxiv:astro-ph/9911484 v1 · 1999-11-26 · 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{JV2F2UUOPP3XYAABDZBNE4FNDA}

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.

Cited by

1 paper in Pith

The Lockman-SpReSO project. Spectroscopic analysis of Type 1 AGN

Receipt and verification

First computed	2026-07-04T15:51:15.777998Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4d745d528e7bf77c00011e42d270ad1825289558e07207c7496617a8fe296304

Aliases

arxiv: astro-ph/9911484 · arxiv_version: astro-ph/9911484v1 · doi: 10.48550/arxiv.astro-ph/9911484 · pith_short_12: JV2F2UUOPP3X · pith_short_16: JV2F2UUOPP3XYAAB · pith_short_8: JV2F2UUO

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/JV2F2UUOPP3XYAABDZBNE4FNDA \
  | 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: 4d745d528e7bf77c00011e42d270ad1825289558e07207c7496617a8fe296304

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "58e47edc4135a112f870e742828ab300de856ffec0baa6a1d764a2da0c49bcc3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-11-26T16:25:57Z",
    "title_canon_sha256": "3f986d5a71163bceca5ec206ccbbaec734d6098d5be63a38408ab2b88438e5d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9911484",
    "kind": "arxiv",
    "version": 1
  }
}