Pith Number

pith:XQIBEFXY

pith:2025:XQIBEFXYE36ERIIZEEVLEHEPIU

not attested not anchored not stored refs pending

Discovery of a Weak CN Spectral Absorption Feature in Red Supergiant Stars in the Andromeda (M31) and Triangulum (M33) Galaxies

Alexandra Masegian, Amanda C. N. Quirk, Anika Kamath, Antara R. Bhattacharya, Arya Maheshwari, Benjamin F. Williams, Caelum J. Rodriguez, Douglas Grion Filho, Evan N. Kirby, Julianne J. Dalcanton, Karoline M. Gilbert, Lara R. Cullinane, Leo Girardi, Paola Marigo, Puragra Guhathakurta, Rachel Raikar, Stanley M. Rinehart V

arxiv:2504.04291 v2 · 2025-04-05 · astro-ph.SR · 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{XQIBEFXYE36ERIIZEEVLEHEPIU}

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	2026-07-05T10:48:29.937526Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc101216f826fc48a119212ab21c8f451ecf2f2a41bce72261a7812c984a68f8

Aliases

arxiv: 2504.04291 · arxiv_version: 2504.04291v2 · doi: 10.48550/arxiv.2504.04291 · pith_short_12: XQIBEFXYE36E · pith_short_16: XQIBEFXYE36ERIIZ · pith_short_8: XQIBEFXY

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/XQIBEFXYE36ERIIZEEVLEHEPIU \
  | 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: bc101216f826fc48a119212ab21c8f451ecf2f2a41bce72261a7812c984a68f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "53420428a80c08c4eccdde67ddd571ab7a296644923d0c3c7c7717debb29accd",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2025-04-05T22:27:35Z",
    "title_canon_sha256": "e8bf74d4ef6b753fd49d9f48d105697b27813bb4a3b28b14f74a98827837df97"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.04291",
    "kind": "arxiv",
    "version": 2
  }
}