Pith Number

pith:ML44AP52

pith:2011:ML44AP52ZQ4L44KO2WPBO63PWA

not attested not anchored not stored refs pending

Wilbur Norman Christiansen 1913-2007

R.H. Frater, W.M. Goss

arxiv:1109.4880 v1 · 2011-09-22 · physics.hist-ph · astro-ph.SR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ML44AP52ZQ4L44KO2WPBO63PWA}

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	2026-05-18T04:12:32.739735Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

62f9c03fbacc38be714ed59e177b6fb002d076118e665c2c3e9ad53ba801c16c

Aliases

arxiv: 1109.4880 · arxiv_version: 1109.4880v1 · doi: 10.48550/arxiv.1109.4880 · pith_short_12: ML44AP52ZQ4L · pith_short_16: ML44AP52ZQ4L44KO · pith_short_8: ML44AP52

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/ML44AP52ZQ4L44KO2WPBO63PWA \
  | 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: 62f9c03fbacc38be714ed59e177b6fb002d076118e665c2c3e9ad53ba801c16c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e083707dc4e9e20411ff8df971702371a39268020aa3b5a24afa2c29a6c5ed80",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2011-09-22T16:39:39Z",
    "title_canon_sha256": "c825589ac7505feb11772295b10ba143aad870942527d5cb492e44f4b65367f5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.4880",
    "kind": "arxiv",
    "version": 1
  }
}