Pith Number

pith:4F55JTBW

pith:2009:4F55JTBW6IFOMKW33KI2H7CQQB

not attested not anchored not stored refs pending

Yellow Supergiants in the Andromeda Galaxy (M31)

Georges Meynet, Maria R. Drout, Nelson Caldwell, Philip Massey, Susan Tokarz

arxiv:0907.5471 v1 · 2009-07-31 · astro-ph.SR · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4F55JTBW6IFOMKW33KI2H7CQQB}

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	2026-05-18T02:12:45.857129Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e17bd4cc36f20ae62adbda91a3fc50804ec3274d8d367781e0966eee2923090f

Aliases

arxiv: 0907.5471 · arxiv_version: 0907.5471v1 · doi: 10.48550/arxiv.0907.5471 · pith_short_12: 4F55JTBW6IFO · pith_short_16: 4F55JTBW6IFOMKW3 · pith_short_8: 4F55JTBW

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/4F55JTBW6IFOMKW33KI2H7CQQB \
  | 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: e17bd4cc36f20ae62adbda91a3fc50804ec3274d8d367781e0966eee2923090f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "35ad1d7f7c4fdb3d3c92df62ba3c9100bd14fea2e66d7c7806e8e17fa081a7ed",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-07-31T13:10:25Z",
    "title_canon_sha256": "3d00e8c2a87d67dbd5a76aae7781258daf8b908653a9647ad2d22038f5b5b628"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.5471",
    "kind": "arxiv",
    "version": 1
  }
}