Pith Number

pith:VBDL3FWS

pith:2011:VBDL3FWSOIULWIQCBMVQYHJS2Q

not attested not anchored not stored refs pending

The isotope effect: Prediction, discussion, and discovery

Helge Kragh

arxiv:1112.2339 v1 · 2011-12-11 · 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{VBDL3FWSOIULWIQCBMVQYHJS2Q}

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	2026-05-18T04:06:34.743687Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a846bd96d27228bb22020b2b0c1d32d4363d7c104870a6e2515762b377984992

Aliases

arxiv: 1112.2339 · arxiv_version: 1112.2339v1 · doi: 10.48550/arxiv.1112.2339 · pith_short_12: VBDL3FWSOIUL · pith_short_16: VBDL3FWSOIULWIQC · pith_short_8: VBDL3FWS

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/VBDL3FWSOIULWIQCBMVQYHJS2Q \
  | 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: a846bd96d27228bb22020b2b0c1d32d4363d7c104870a6e2515762b377984992

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ded8db186d746dfef61cb48d41584e0c37cae12e74abb44f16e67a789855e51",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2011-12-11T09:26:42Z",
    "title_canon_sha256": "e4b3a00eb1938aaaaa2a7ad97e5c8434132e4823cf54de32eebcf12cac3a80a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.2339",
    "kind": "arxiv",
    "version": 1
  }
}