Pith Number

pith:2X7BGZUM

pith:1997:2X7BGZUMG7473T3TNDAEN733UC

not attested not anchored not stored refs pending

Young red supergiants and the near infrared light appearance of disk galaxies

James E. Rhoads

arxiv:astro-ph/9710189 v1 · 1997-10-17 · 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{2X7BGZUMG7473T3TNDAEN733UC}

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	2026-05-18T01:40:16.599709Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d5fe13668c37f9fdcf7368c046ff7ba0b5af87e2669d604ec70d61db699a07dc

Aliases

arxiv: astro-ph/9710189 · arxiv_version: astro-ph/9710189v1 · doi: 10.48550/arxiv.astro-ph/9710189 · pith_short_12: 2X7BGZUMG747 · pith_short_16: 2X7BGZUMG7473T3T · pith_short_8: 2X7BGZUM

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/2X7BGZUMG7473T3TNDAEN733UC \
  | 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: d5fe13668c37f9fdcf7368c046ff7ba0b5af87e2669d604ec70d61db699a07dc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "357c6cf1c263a68f8897798d72ab2850853b1d6965947dfcaf12c262cc449913",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-10-17T06:47:20Z",
    "title_canon_sha256": "f98da6bc78887272e27326dedcd7cee11c7fd82817299ba064b1e5f14aa7ec44"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9710189",
    "kind": "arxiv",
    "version": 1
  }
}