Pith Number

pith:DX3VKHEP

pith:2011:DX3VKHEP3Y5ZUGT7VWXTN27B3Z

not attested not anchored not stored refs pending

VLT/X-shooter observations of the low-metallicity blue compact dwarf galaxy PHL 293B including a luminous blue variable star

2, 2), (2) Main Astronomical Observatory, 3), (3) LUTH, 4), (4) Institut fuer Astrophysik, Bonn, C. Henkel (1) ((1) Max-Planck-Institut fuer Radioastronomie, France, Germany, Germany), Goettingen, Goettingen Universitat, Kiev, K. J. Fricke (1, Meudon, N. G. Guseva (1, Observatoire de Paris, Ukraine, Y. I. Izotov (1

arxiv:1108.4309 v1 · 2011-08-22 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DX3VKHEP3Y5ZUGT7VWXTN27B3Z}

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	2026-05-18T04:14:55.747757Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1df7551c8fde3b9a1a7fadaf36ebe1de6286995d56641e724d844d7c96dc67b8

Aliases

arxiv: 1108.4309 · arxiv_version: 1108.4309v1 · doi: 10.48550/arxiv.1108.4309 · pith_short_12: DX3VKHEP3Y5Z · pith_short_16: DX3VKHEP3Y5ZUGT7 · pith_short_8: DX3VKHEP

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/DX3VKHEP3Y5ZUGT7VWXTN27B3Z \
  | 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: 1df7551c8fde3b9a1a7fadaf36ebe1de6286995d56641e724d844d7c96dc67b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f5dbc7e2bc3b9f7300af71d8dd42c565e390c8ed80ee226bf6f343460d063821",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-08-22T13:30:27Z",
    "title_canon_sha256": "242fc0e36f0c9e306265faa6c3e41a67038fc47535f2b4f8a99300230bf2eea1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.4309",
    "kind": "arxiv",
    "version": 1
  }
}