Pith Number

pith:2CKLFXAW

pith:2026:2CKLFXAWM63KT6CFGVHNDHUKBF

not attested not anchored not stored refs pending

An Ultramassive White Dwarf with a Likely Oxygen-Neon Core

Alberto Rebassa-Mansergas, J.J. Hermes, Maria E. Camisassa, Roberto Raddi, Santiago Torres, Stefan M. Arseneau, Vedant Chandra

arxiv:2606.19441 v1 · 2026-06-17 · 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{2CKLFXAWM63KT6CFGVHNDHUKBF}

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	2026-06-19T16:12:25.748077Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d094b2dc1667b6a9f845354ed19e8a094a9080a3b74043f04314826efb848eab

Aliases

arxiv: 2606.19441 · arxiv_version: 2606.19441v1 · doi: 10.48550/arxiv.2606.19441 · pith_short_12: 2CKLFXAWM63K · pith_short_16: 2CKLFXAWM63KT6CF · pith_short_8: 2CKLFXAW

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/2CKLFXAWM63KT6CFGVHNDHUKBF \
  | 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: d094b2dc1667b6a9f845354ed19e8a094a9080a3b74043f04314826efb848eab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c5623facad560b473c2216d96d38852659fe4b9cf5adb957e0559a22b69bc62b",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2026-06-17T18:00:04Z",
    "title_canon_sha256": "28c1b7fbca378ca67d2697a3b13e00858d6a8a6a40f1d6b4d57225f50a99383f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.19441",
    "kind": "arxiv",
    "version": 1
  }
}