Pith Number

pith:W55KV2H7

pith:2019:W55KV2H7G4AUF6OLJ3D6DJ55KK

not attested not anchored not stored refs pending

A reference sample of face-on bulgeless galaxies

I. D. Karachentsev, V. E. Karachentseva

arxiv:1902.09892 v1 · 2019-02-26 · 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{W55KV2H7G4AUF6OLJ3D6DJ55KK}

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	2026-05-17T23:52:00.906436Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b77aaae8ff370142f9cb4ec7e1a7bd5281b1c5d853b93e7822276fde8c24db52

Aliases

arxiv: 1902.09892 · arxiv_version: 1902.09892v1 · doi: 10.48550/arxiv.1902.09892 · pith_short_12: W55KV2H7G4AU · pith_short_16: W55KV2H7G4AUF6OL · pith_short_8: W55KV2H7

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/W55KV2H7G4AUF6OLJ3D6DJ55KK \
  | 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: b77aaae8ff370142f9cb4ec7e1a7bd5281b1c5d853b93e7822276fde8c24db52

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e150177dc069e87816e40f2a66f61c4a126b6d9e643806798d35678020555626",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-02-26T12:36:58Z",
    "title_canon_sha256": "9de351005dce996cfd466f58e72aeb5a80c9b08ec6c8c51dd3a88136c7ce3cb3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.09892",
    "kind": "arxiv",
    "version": 1
  }
}