Pith Number

pith:3NCMGF3Z

pith:2018:3NCMGF3ZUH5KRAMXPQNXF5EAF5

not attested not anchored not stored refs pending

Chandra Early-Type Galaxy Atlas

Alessandro Paggi, Amy Mossman, Antonella Fruscione, Craig Anderson, Dong-Woo Kim, Douglas Burke, Douglas Morgan, Ewan O'Sullivan, Ginevra Trinchieri, Giuseppina Fabbiano, Jennifer Lauer, Michael McCollough, Raffaele D'Abrusco, Saeqa Vrtilek

arxiv:1812.02718 v2 · 2018-12-06 · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3NCMGF3ZUH5KRAMXPQNXF5EAF5}

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	2026-05-17T23:47:12.256151Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

db44c31779a1faa881977c1b72f4802f5db4a56a33ff752e90bbb3f99c2680f5

Aliases

arxiv: 1812.02718 · arxiv_version: 1812.02718v2 · doi: 10.48550/arxiv.1812.02718 · pith_short_12: 3NCMGF3ZUH5K · pith_short_16: 3NCMGF3ZUH5KRAMX · pith_short_8: 3NCMGF3Z

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/3NCMGF3ZUH5KRAMXPQNXF5EAF5 \
  | 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: db44c31779a1faa881977c1b72f4802f5db4a56a33ff752e90bbb3f99c2680f5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2d9ebc44795f11298ada1dd68533f81aeb679e4e24dc88078847ef09d85b031c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-12-06T18:53:20Z",
    "title_canon_sha256": "7a7c886ccfe0f2e7b67ad23192358f9e704129e31c8653b12f4092cbfc7d931d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.02718",
    "kind": "arxiv",
    "version": 2
  }
}