Pith Number

pith:SEXPBCYC

pith:2025:SEXPBCYCENK4AIB5GK7I6LACQ4

not attested not anchored not stored refs pending

Discovery of a variable yellow supergiant progenitor for the Type IIb SN 2024abfo

Jifeng Liu, Justyn R. Maund, Meng Sun, Ning-Chen Sun, Wenxiong Li, Zexi Niu, Zhen Guo

arxiv:2504.20407 v2 · 2025-04-29 · astro-ph.HE · astro-ph.GA · 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{SEXPBCYCENK4AIB5GK7I6LACQ4}

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	2026-07-05T11:25:44.510693Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

912ef08b022355c0203d32be8f2c02870502da24977f3d67e04a44b999e16f36

Aliases

arxiv: 2504.20407 · arxiv_version: 2504.20407v2 · doi: 10.48550/arxiv.2504.20407 · pith_short_12: SEXPBCYCENK4 · pith_short_16: SEXPBCYCENK4AIB5 · pith_short_8: SEXPBCYC

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/SEXPBCYCENK4AIB5GK7I6LACQ4 \
  | 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: 912ef08b022355c0203d32be8f2c02870502da24977f3d67e04a44b999e16f36

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7c809830f492acfc957e2bddbe2777a23b6c8cebebc32d8713d722d1a29c1164",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.SR"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2025-04-29T04:05:20Z",
    "title_canon_sha256": "b890114cc8762c62c2556e7423ab29135d6c3776f19d44056ac97612c005f506"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.20407",
    "kind": "arxiv",
    "version": 2
  }
}