Pith Number

pith:7IZZCDQC

pith:2025:7IZZCDQCRD7CDOLTY5FSNSSAIP

not attested not anchored not stored refs pending

The Samples and Binary Fractions of Red Supergiant in M31 and M33 by the HST Observations

Biwei Jiang, Min Dai, Shu Wang, Ying Li

arxiv:2505.24559 v2 · 2025-05-30 · 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{7IZZCDQCRD7CDOLTY5FSNSSAIP}

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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.

Cited by

1 paper in Pith

Stellar evolution through the Red Supergiant phase

Receipt and verification

First computed	2026-07-05T11:14:29.725485Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fa33910e0288fe21b973c74b26ca4043cbc4802de8b845894c38c9e2ae410f65

Aliases

arxiv: 2505.24559 · arxiv_version: 2505.24559v2 · doi: 10.48550/arxiv.2505.24559 · pith_short_12: 7IZZCDQCRD7C · pith_short_16: 7IZZCDQCRD7CDOLT · pith_short_8: 7IZZCDQC

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/7IZZCDQCRD7CDOLTY5FSNSSAIP \
  | 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: fa33910e0288fe21b973c74b26ca4043cbc4802de8b845894c38c9e2ae410f65

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "96b3e07792dcbde67b14fd17564c5311330c01be45240aeb120e4085e6acadf8",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2025-05-30T13:13:16Z",
    "title_canon_sha256": "3d6885528fb26ab2ecbb864a5f2d7c42dfedb4ccd2865b2c00998c220f4b7c5f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.24559",
    "kind": "arxiv",
    "version": 2
  }
}