Pith Number

pith:EKPI7JHG

pith:2018:EKPI7JHG6N2Q5BVL2NAOTG3VVT

not attested not anchored not stored refs pending

Early-type galaxies in the Antlia Cluster: Catalogue and isophotal analysis

Juan P. Calder\'on, Lilia P. Bassino, Mat\'ias G\'omez, Sergio A. Cellone

arxiv:1803.03678 v1 · 2018-03-09 · 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{EKPI7JHG6N2Q5BVL2NAOTG3VVT}

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	2026-05-18T00:21:38.502037Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

229e8fa4e6f3750e86abd340e99b75acdcb35b1fbd427d175e08ad7bc47631b8

Aliases

arxiv: 1803.03678 · arxiv_version: 1803.03678v1 · doi: 10.48550/arxiv.1803.03678 · pith_short_12: EKPI7JHG6N2Q · pith_short_16: EKPI7JHG6N2Q5BVL · pith_short_8: EKPI7JHG

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/EKPI7JHG6N2Q5BVL2NAOTG3VVT \
  | 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: 229e8fa4e6f3750e86abd340e99b75acdcb35b1fbd427d175e08ad7bc47631b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "873eb590d1e206dad697593908a491ffebcbf7b0f868df4f41b33ff317c681b9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-03-09T20:06:31Z",
    "title_canon_sha256": "7ba66292df08a5f2f9c04440bcca93d7ee17bddc9d029df4dc691687c30b1b2b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.03678",
    "kind": "arxiv",
    "version": 1
  }
}