Pith Number

pith:4PLOXS7I

pith:2003:4PLOXS7IH2GGURUBW7CBG6YHM4

not attested not anchored not stored refs pending

High Resolution Chandra Spectroscopy of Gamma Cassiopeia (B0.5IVe)

(2) Swarthmore Coll., (3) MIT, (4) CfA), D. H. Cohen (2), M. A. Smith (1), M. F. Gu (3), N. R. Evans (4), P. G. Schran (2) ((1) Catholic Univ., R. D. Robinson (1)

arxiv:astro-ph/0309293 v4 · 2003-09-10 · 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{4PLOXS7IH2GGURUBW7CBG6YHM4}

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	2026-07-04T16:51:37.965606Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e3d6ebcbe83e8c6a4681b7c4137b07673578a63f0ba59496576cd33d70d2c4c7

Aliases

arxiv: astro-ph/0309293 · arxiv_version: astro-ph/0309293v4 · doi: 10.48550/arxiv.astro-ph/0309293 · pith_short_12: 4PLOXS7IH2GG · pith_short_16: 4PLOXS7IH2GGURUB · pith_short_8: 4PLOXS7I

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/4PLOXS7IH2GGURUBW7CBG6YHM4 \
  | 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: e3d6ebcbe83e8c6a4681b7c4137b07673578a63f0ba59496576cd33d70d2c4c7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b5f3f85ed7a48b795c7ef6583bbd9d4364426ee805cbff31edeb8268db4710a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-09-10T19:01:09Z",
    "title_canon_sha256": "0bbd5e51c58e42cd603f6dc4ece545f3ad4b9792e5d5b4429276ee23934272b6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0309293",
    "kind": "arxiv",
    "version": 4
  }
}