Pith Number

pith:VTYHZJNK

pith:2015:VTYHZJNKOXMU4CX7YTYSDDR5TT

not attested not anchored not stored refs pending

The first transition Wolf-Rayet WN/C star in M31

David Zurek, Joanna Mikolajewska, Katarzyna Drozd, Krystian Ilkiewicz, Michael M. Shara, Nelson Caldwell

arxiv:1510.03374 v1 · 2015-10-12 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VTYHZJNKOXMU4CX7YTYSDDR5TT}

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	2026-05-18T01:24:51.717459Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

acf07ca5aa75d94e0affc4f1218e3d9ce438f2dc8d83c23c2bf99d38ddac3853

Aliases

arxiv: 1510.03374 · arxiv_version: 1510.03374v1 · doi: 10.48550/arxiv.1510.03374 · pith_short_12: VTYHZJNKOXMU · pith_short_16: VTYHZJNKOXMU4CX7 · pith_short_8: VTYHZJNK

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/VTYHZJNKOXMU4CX7YTYSDDR5TT \
  | 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: acf07ca5aa75d94e0affc4f1218e3d9ce438f2dc8d83c23c2bf99d38ddac3853

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b9dafbdaa740ff85b745ddfb667517d319100aace74823aaf01ee4a6a4462074",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-10-12T17:31:41Z",
    "title_canon_sha256": "366a943c4fbe3f0d4eacdd48b76af4683d573831621a9497e73ba1e72a7a3f83"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.03374",
    "kind": "arxiv",
    "version": 1
  }
}