Pith Number

pith:NGYPNQWB

pith:2009:NGYPNQWBRX5Q46C57S52A6CTKV

not attested not anchored not stored refs pending

A VLA radio-survey of early-type galaxies in the Virgo cluster

(3) Universita' di Torino, Alessandro Capetti (1), David J. Axon (2), David Merritt (2), Italy), Italy (2) Rochester Institute of Technology, Preeti Kharb (2), Ranieri D. Baldi (3) ((1)INAF - Osservatorio Astronomico di Torino, USA

arxiv:0910.4102 v1 · 2009-10-21 · 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{NGYPNQWBRX5Q46C57S52A6CTKV}

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	2026-05-18T02:11:13.193670Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

69b0f6c2c18dfb0e785dfcbba0785355409d6dd8cb357c1371f77c11d2d0ce6b

Aliases

arxiv: 0910.4102 · arxiv_version: 0910.4102v1 · doi: 10.48550/arxiv.0910.4102 · pith_short_12: NGYPNQWBRX5Q · pith_short_16: NGYPNQWBRX5Q46C5 · pith_short_8: NGYPNQWB

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/NGYPNQWBRX5Q46C57S52A6CTKV \
  | 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: 69b0f6c2c18dfb0e785dfcbba0785355409d6dd8cb357c1371f77c11d2d0ce6b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dfeb4e32299ca34e33418f91afd5be488d1be741b5631b4fef1590767b302ca4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-10-21T14:41:48Z",
    "title_canon_sha256": "2c829748710d1c665445854180df2973514cbddb51fff1a9ed53f54a8c45bcc9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.4102",
    "kind": "arxiv",
    "version": 1
  }
}