Pith Number

pith:4N3SDGL4

pith:2009:4N3SDGL4742JDXMUJOZUH7OOGM

not attested not anchored not stored refs pending

The HI content of early-type galaxies from the ALFALFA survey. II. The case of low density environments

B.R. Kent, C. Giovanardi, G. Gavazzi, G. Trinchieri, M.Grossi, M.P.Haynes, R. Giovanelli, S. di Serego Alighieri, S. Pellegrini, S. Stierwalt

arxiv:0903.0602 v3 · 2009-03-03 · 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{4N3SDGL4742JDXMUJOZUH7OOGM}

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	2026-05-18T02:14:37.522630Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e37721997cff3491dd944bb343fdce331d018c25b3834eeb7a12ee42783db751

Aliases

arxiv: 0903.0602 · arxiv_version: 0903.0602v3 · doi: 10.48550/arxiv.0903.0602 · pith_short_12: 4N3SDGL4742J · pith_short_16: 4N3SDGL4742JDXMU · pith_short_8: 4N3SDGL4

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/4N3SDGL4742JDXMUJOZUH7OOGM \
  | 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: e37721997cff3491dd944bb343fdce331d018c25b3834eeb7a12ee42783db751

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c19d49ca95b9d09705c4879e15e0435c976cf1bf2d44b83530ee458d8b928b4f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-03-03T19:41:37Z",
    "title_canon_sha256": "b0756e45e6056f75519094be86d878bb67fea7174e671cf08691ad629629998e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.0602",
    "kind": "arxiv",
    "version": 3
  }
}