Pith Number

pith:SQH4WC2P

pith:2013:SQH4WC2PPBAPC7RTTUQG7PEXJ4

not attested not anchored not stored refs pending

The rise and fall of cosmical physics: notes for a history, ca. 1850-1920

Helge Kragh

arxiv:1304.3890 v1 · 2013-04-14 · physics.hist-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{SQH4WC2PPBAPC7RTTUQG7PEXJ4}

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	2026-05-18T03:28:03.900705Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

940fcb0b4f7840f17e339d206fbc974f39ca61f9b1f797afa63518d65362d5ea

Aliases

arxiv: 1304.3890 · arxiv_version: 1304.3890v1 · doi: 10.48550/arxiv.1304.3890 · pith_short_12: SQH4WC2PPBAP · pith_short_16: SQH4WC2PPBAPC7RT · pith_short_8: SQH4WC2P

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/SQH4WC2PPBAPC7RTTUQG7PEXJ4 \
  | 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: 940fcb0b4f7840f17e339d206fbc974f39ca61f9b1f797afa63518d65362d5ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "634d751965d8a042f6518a8f1b23c4fdaed04c3bb95e885a5a57e89319e39eed",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2013-04-14T08:30:42Z",
    "title_canon_sha256": "47bac386f642890099c42789ef5ee8f8027e9110493eac59cafa6d30b0bdd53e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.3890",
    "kind": "arxiv",
    "version": 1
  }
}