Pith Number

pith:GQU33CMO

pith:2012:GQU33CMOO2YLJARDFRHXR532AU

not attested not anchored not stored refs pending

A Sense of Crisis: Physics in the fin-de-siecle Era

Helge Kragh

arxiv:1207.2016 v1 · 2012-07-09 · 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{GQU33CMOO2YLJARDFRHXR532AU}

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	2026-05-18T03:51:26.281678Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3429bd898e76b0b482232c4f78f77a053e59555f8da1ccdd75d5801b39f0c469

Aliases

arxiv: 1207.2016 · arxiv_version: 1207.2016v1 · doi: 10.48550/arxiv.1207.2016 · pith_short_12: GQU33CMOO2YL · pith_short_16: GQU33CMOO2YLJARD · pith_short_8: GQU33CMO

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/GQU33CMOO2YLJARDFRHXR532AU \
  | 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: 3429bd898e76b0b482232c4f78f77a053e59555f8da1ccdd75d5801b39f0c469

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "51f2528c9687bdf98ea72fc7e59bd14911d47ff19bc3e2f6b9eed664a5281242",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2012-07-09T12:03:13Z",
    "title_canon_sha256": "d1e946115b3b274ba2e74cbc892e5c65ee2862128a0042353bba2e93a1876439"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.2016",
    "kind": "arxiv",
    "version": 1
  }
}