Pith Number

pith:XECQDI25

pith:2013:XECQDI257W2TR4YLEYBVAUSH6Y

not attested not anchored not stored refs pending

The past and future evolution of a star like Betelgeuse

Andre Maeder, Cyril Georgy, Georges Meynet, Jose Groh, Lionel Haemmerle, Sylvia Ekstrom

arxiv:1303.1339 v1 · 2013-03-06 · 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{XECQDI257W2TR4YLEYBVAUSH6Y}

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	2026-05-18T01:51:16.249930Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b90501a35dfdb538f30b2603505247f62fc5617929d3774e8bcf1805bdf04197

Aliases

arxiv: 1303.1339 · arxiv_version: 1303.1339v1 · doi: 10.48550/arxiv.1303.1339 · pith_short_12: XECQDI257W2T · pith_short_16: XECQDI257W2TR4YL · pith_short_8: XECQDI25

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/XECQDI257W2TR4YLEYBVAUSH6Y \
  | 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: b90501a35dfdb538f30b2603505247f62fc5617929d3774e8bcf1805bdf04197

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e733db47345e4fcba0fdc76332e2b9a182821d956ea1cebea7703415a1726a84",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-03-06T14:18:11Z",
    "title_canon_sha256": "56cd21042211d25542e877f25b2802e8a9a77790a993d9024c3e1799eff8fc7c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.1339",
    "kind": "arxiv",
    "version": 1
  }
}