Pith Number

pith:4E7HKTOZ

pith:2007:4E7HKTOZDPWOQ53WQHMXC52P2B

not attested not anchored not stored refs pending

Late-Type Red Supergiants: Too Cool for the Magellanic Clouds?

Bertrand Plez, Emily M. Levesque, K. A. G. Olsen, Philip Massey

arxiv:0705.3431 v1 · 2007-05-23 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4E7HKTOZDPWOQ53WQHMXC52P2B}

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	2026-07-04T15:44:23.739963Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e13e754dd91bece8777681d971774fd06bd317fcd64f711c8b3a9be021375fa9

Aliases

arxiv: 0705.3431 · arxiv_version: 0705.3431v1 · doi: 10.48550/arxiv.0705.3431 · pith_short_12: 4E7HKTOZDPWO · pith_short_16: 4E7HKTOZDPWOQ53W · pith_short_8: 4E7HKTOZ

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/4E7HKTOZDPWOQ53WQHMXC52P2B \
  | 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: e13e754dd91bece8777681d971774fd06bd317fcd64f711c8b3a9be021375fa9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "291c34b855d128b0a62e11b673abce3f82a648d97bc57e39eed644b63072c485",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-05-23T17:31:54Z",
    "title_canon_sha256": "cfca6f636ccc01f4d0f624f0b668db43bce9fb1a1743d1aafdfdbb162ab44282"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0705.3431",
    "kind": "arxiv",
    "version": 1
  }
}