Pith Number

pith:GBIG5YQR

pith:2000:GBIG5YQRUCGZRIR4HPBONMOFMC

not attested not anchored not stored refs pending

An Extragalactic HI Cloud with No Optical Counterpart?

A. E. Wright, B. K. Gibson, B. Koribalski, D. F. Malin, E. M. Sadler, F. Stootman, G. D. Banks, H. Jerjen, I. Stewart, J. R. Mould, K. C. Freeman, L. Staveley-Smith, M. E. Putman, M. J. Disney, M. J. Drinkwater, M. Marquarding, P. A. Henning, P. J. Boyce, P. M. Knezek, R. Bhathal, R. D. Ekers, R. F. Minchin, R. L. Webster, R. M. Price, S. D. Ryder, T. Oosterloo, V. A. Kilborn, W. J. G. de Blok

arxiv:astro-ph/0005267 v1 · 2000-05-12 · 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{GBIG5YQRUCGZRIR4HPBONMOFMC}

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	2026-07-04T16:16:39.626928Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

30506ee211a08d98a23c3bc2e6b1c560aa850109ee55315e8fa843699f2a791e

Aliases

arxiv: astro-ph/0005267 · arxiv_version: astro-ph/0005267v1 · doi: 10.48550/arxiv.astro-ph/0005267 · pith_short_12: GBIG5YQRUCGZ · pith_short_16: GBIG5YQRUCGZRIR4 · pith_short_8: GBIG5YQR

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/GBIG5YQRUCGZRIR4HPBONMOFMC \
  | 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: 30506ee211a08d98a23c3bc2e6b1c560aa850109ee55315e8fa843699f2a791e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1e0f83ee0625d6d35af44629b9cac2dda8da8bcb5fcb1301fc3f02980476526f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-05-12T06:12:22Z",
    "title_canon_sha256": "b6104130db2249e2b53df3756d02543b419ed27be15087c257cd3bd0d8c67f73"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0005267",
    "kind": "arxiv",
    "version": 1
  }
}