Pith Number

pith:PDI4JGRV

pith:2018:PDI4JGRVZSWYTUTLIBTZKUZNUU

not attested not anchored not stored refs pending

X-ray scaling relations of early-type galaxies

A.C. Edge, A.N. Vantyghem, B.R. McNamara, F.A. Pulido, H.R. Russell, Iu.V. Babyk, M.T. Hogan, P.E.J. Nulsen

arxiv:1803.00020 v1 · 2018-02-28 · astro-ph.GA · 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{PDI4JGRVZSWYTUTLIBTZKUZNUU}

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	2026-05-18T00:17:38.538263Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78d1c49a35ccad89d26b406795532da5193f8be7faf61bc396f01e32db93181d

Aliases

arxiv: 1803.00020 · arxiv_version: 1803.00020v1 · doi: 10.48550/arxiv.1803.00020 · pith_short_12: PDI4JGRVZSWY · pith_short_16: PDI4JGRVZSWYTUTL · pith_short_8: PDI4JGRV

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/PDI4JGRVZSWYTUTLIBTZKUZNUU \
  | 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: 78d1c49a35ccad89d26b406795532da5193f8be7faf61bc396f01e32db93181d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dd8de39a14d80ef26904ed77f8eec9802b0a9f6641b79eccb9c0f260317777c0",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-02-28T19:00:06Z",
    "title_canon_sha256": "8c5c63c433dbebc75fe8b93d2ee7dbc39d47ff737855f859d82d2b65bed3f631"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.00020",
    "kind": "arxiv",
    "version": 1
  }
}