Pith Number

pith:PDGVSGLS

pith:2009:PDGVSGLS5UJAD5L3Z3G4YG4S5Y

not attested not anchored not stored refs pending

Infrared-red Cores in Nearby Elliptical Galaxies

J.-S. Huang, Q.-S. Gu, Y.-P Tang, Y.-P. Wang

arxiv:0907.0170 v1 · 2009-07-01 · 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{PDGVSGLS5UJAD5L3Z3G4YG4S5Y}

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	2026-05-18T02:13:11.421901Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78cd591972ed1201f57bcecdcc1b92ee111376a028bedf088a9ebf8cc641db7c

Aliases

arxiv: 0907.0170 · arxiv_version: 0907.0170v1 · doi: 10.48550/arxiv.0907.0170 · pith_short_12: PDGVSGLS5UJA · pith_short_16: PDGVSGLS5UJAD5L3 · pith_short_8: PDGVSGLS

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/PDGVSGLS5UJAD5L3Z3G4YG4S5Y \
  | 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: 78cd591972ed1201f57bcecdcc1b92ee111376a028bedf088a9ebf8cc641db7c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9635229bd7f3357638e3551b984f5cbc630ae4d914d567dbfc4000a1516fa978",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-07-01T14:48:32Z",
    "title_canon_sha256": "59123d917468614b70495c3e11e5b9a265437407d0bf961f747a3881dae65289"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.0170",
    "kind": "arxiv",
    "version": 1
  }
}