Pith Number

pith:H7UOVUNK

pith:1998:H7UOVUNKQRG5NIWRELZ4UHC3NM

not attested not anchored not stored refs pending

GAIA: Origin and Evolution of the Milky Way

(4)Copenhagen University Observatory, (5)Torino Observatory, (6)Universitat de Barcelona, (7)CERGA, (8)ARI Heidelberg, (9)Sterrewacht Leiden, Cambridge, Denmark, E Hoeg(4), ESTEC, F Favata(2), F Mignard(7), France, Germany, Gerry Gilmore(1), Grasse, Italy, L Lindegren(3), Michael Perryman(2), M Lattanzi(5), Netherlands), Noordwijk The Netherlands (3)Lund Observatory, P.T.deZeeuw(9) ((1)Institute of Astronomy, Spain, S Roeser(8), Sweden, UK (2)Astrophysics Division, X Luri(6)

arxiv:astro-ph/9805180 v1 · 1998-05-13 · 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{H7UOVUNKQRG5NIWRELZ4UHC3NM}

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	2026-05-18T01:40:14.167501Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3fe8ead1aa844dd6a2d122f3ca1c5b6b0d77de2e583ab96c4fa8f1777869edad

Aliases

arxiv: astro-ph/9805180 · arxiv_version: astro-ph/9805180v1 · doi: 10.48550/arxiv.astro-ph/9805180 · pith_short_12: H7UOVUNKQRG5 · pith_short_16: H7UOVUNKQRG5NIWR · pith_short_8: H7UOVUNK

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/H7UOVUNKQRG5NIWRELZ4UHC3NM \
  | 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: 3fe8ead1aa844dd6a2d122f3ca1c5b6b0d77de2e583ab96c4fa8f1777869edad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90368f335eacd4d9111fb3f264c40fb45aba404ba2d2880f1cf6bd01219359b2",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-05-13T22:16:16Z",
    "title_canon_sha256": "c13813f480a6745cac017d5cb8e6a6aae4857d11152e01c8932bbeceac0f5aa3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9805180",
    "kind": "arxiv",
    "version": 1
  }
}