Pith Number

pith:GVQ2OZ6G

pith:2004:GVQ2OZ6G6ZLZFD2F7CRXODXMTK

not attested not anchored not stored refs pending

Integral field spectroscopy of the ultraluminous X-ray source Holmberg II X-1

A. Burenkov, A. Surkov, E. Costantini, G. Hasinger, I. Lehmann, J. Greiner, M. Roth, O. Sholukhova, S. Fabrika, S. F. Sanchez, T. Becker, T. Miyaji, V. Afanasiev

arxiv:astro-ph/0410458 v1 · 2004-10-19 · 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{GVQ2OZ6G6ZLZFD2F7CRXODXMTK}

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	2026-07-04T16:45:00.457885Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3561a767c6f657928f45f8a3770eec9a90491651f5634adce950fb4a03c1036c

Aliases

arxiv: astro-ph/0410458 · arxiv_version: astro-ph/0410458v1 · doi: 10.48550/arxiv.astro-ph/0410458 · pith_short_12: GVQ2OZ6G6ZLZ · pith_short_16: GVQ2OZ6G6ZLZFD2F · pith_short_8: GVQ2OZ6G

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/GVQ2OZ6G6ZLZFD2F7CRXODXMTK \
  | 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: 3561a767c6f657928f45f8a3770eec9a90491651f5634adce950fb4a03c1036c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a6c95cfc10afc414be6194b8166c5ecd7eeabe8baa605014ee21da4b6f2cb180",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-10-19T18:59:48Z",
    "title_canon_sha256": "d9141d6254e2b5e74b9d170f304dcc9391a0864e2e95059e48aba76c9fd2de09"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0410458",
    "kind": "arxiv",
    "version": 1
  }
}