Pith Number

pith:W5QFHLLS

pith:2005:W5QFHLLSA37WD5OAPAV4MJC26C

not attested not anchored not stored refs pending

A Dark Galaxy in the Virgo Cluster Imaged at 21-cm

(2) Steward Observatory, (3) Jodrell Bank Observatory, (4) Osservatorio Astronomica di Roma, (5) Observatoire de Paris), A. R. Marble (2), C. A. Jordan (3), C. D. Impey (2), D. A. Garcia (1), J. I. Davies (1), M. Grossi (1), M. J. Disney (1), P. J. Boyce (1), R. F. Minchin (1), R. H. Lang (1), S. Roberts (1), S. Sabatini (4), W. van Driel (5) ((1) Cardiff University

arxiv:astro-ph/0508153 v1 · 2005-08-05 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W5QFHLLSA37WD5OAPAV4MJC26C}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T01:40:33.659260Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b76053ad7206ff61f5c0782bc6245af09bdd008458651eb15720f6622ce3ce61

Aliases

arxiv: astro-ph/0508153 · arxiv_version: astro-ph/0508153v1 · doi: 10.48550/arxiv.astro-ph/0508153 · pith_short_12: W5QFHLLSA37W · pith_short_16: W5QFHLLSA37WD5OA · pith_short_8: W5QFHLLS

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/W5QFHLLSA37WD5OAPAV4MJC26C \
  | 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: b76053ad7206ff61f5c0782bc6245af09bdd008458651eb15720f6622ce3ce61

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b6b7cf4947cac741694fab9ebe69e012a5232e90ce3be7b88510b46a813c055e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-08-05T11:10:11Z",
    "title_canon_sha256": "9da227a2feb4267115e2ce349f49a3333d41954fff5014c3c501a6a0103eb54c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0508153",
    "kind": "arxiv",
    "version": 1
  }
}