Pith Number

pith:TPFK4ETQ

pith:2013:TPFK4ETQ3Z5T5GWJKGPAXIW7YN

not attested not anchored not stored refs pending

PGC 60020: a Polar-Ring Galaxy

A. N. Burenkov, G. M. Karataeva, O. A. Merkulova, V. A. Yakovleva

arxiv:1302.1339 v1 · 2013-02-06 · 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{TPFK4ETQ3Z5T5GWJKGPAXIW7YN}

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	2026-05-18T03:34:24.537036Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9bcaae1270de7b3e9ac9519e0ba2dfc361a7d094a1d0d346b3cd14b74a4497b6

Aliases

arxiv: 1302.1339 · arxiv_version: 1302.1339v1 · doi: 10.48550/arxiv.1302.1339 · pith_short_12: TPFK4ETQ3Z5T · pith_short_16: TPFK4ETQ3Z5T5GWJ · pith_short_8: TPFK4ETQ

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/TPFK4ETQ3Z5T5GWJKGPAXIW7YN \
  | 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: 9bcaae1270de7b3e9ac9519e0ba2dfc361a7d094a1d0d346b3cd14b74a4497b6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bcdbf1446b911f3b6a7d76abbd6bba98f18cb4e4b7423ee63d23895a267cc7a3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-02-06T12:25:47Z",
    "title_canon_sha256": "247bc50c6c00019f98c9cda26d3331d4211810fddcc1b2f2698e045f4f534f64"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.1339",
    "kind": "arxiv",
    "version": 1
  }
}