Pith Number

pith:253KSEQG

pith:2009:253KSEQGUZT4O6IHTTKTSF4ABR

not attested not anchored not stored refs pending

Gravitational potential and X-ray luminosities of early-type galaxies observed with XMM-Newton and Chandra

Kyoko Matsushita, Ryo Nagino

arxiv:0903.2540 v2 · 2009-03-14 · 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{253KSEQGUZT4O6IHTTKTSF4ABR}

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	2026-05-18T02:14:28.277518Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d776a91206a667c779079cd53917800c4cf44cbd04083283a335da43d959a9b2

Aliases

arxiv: 0903.2540 · arxiv_version: 0903.2540v2 · doi: 10.48550/arxiv.0903.2540 · pith_short_12: 253KSEQGUZT4 · pith_short_16: 253KSEQGUZT4O6IH · pith_short_8: 253KSEQG

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/253KSEQGUZT4O6IHTTKTSF4ABR \
  | 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: d776a91206a667c779079cd53917800c4cf44cbd04083283a335da43d959a9b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b43b00872e47779111398d1baf62cd7dec8b55d77f33efce1564265a3f067295",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-03-14T11:45:03Z",
    "title_canon_sha256": "1f963314fff7b26cbc6404136e23df0ea4107a4b297bd50a3d8517433b93dc31"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.2540",
    "kind": "arxiv",
    "version": 2
  }
}