Pith Number

pith:CCVQJN7K

pith:2009:CCVQJN7KEVR77UGQXU43GCPEN2

not attested not anchored not stored refs pending

The falling raindrop, revisited

Alan D. Sokal

arxiv:0908.0090 v1 · 2009-08-01 · physics.class-ph · physics.ed-ph · physics.pop-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{CCVQJN7KEVR77UGQXU43GCPEN2}

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	2026-05-18T04:34:10.192184Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

10ab04b7ea2563ffd0d0bd39b309e46ea536aa3346582711bc036926425d3d26

Aliases

arxiv: 0908.0090 · arxiv_version: 0908.0090v1 · doi: 10.48550/arxiv.0908.0090 · pith_short_12: CCVQJN7KEVR7 · pith_short_16: CCVQJN7KEVR77UGQ · pith_short_8: CCVQJN7K

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/CCVQJN7KEVR77UGQXU43GCPEN2 \
  | 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: 10ab04b7ea2563ffd0d0bd39b309e46ea536aa3346582711bc036926425d3d26

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "52b77a91707a84b5b250ce685e6025c061d6b68be79bc33d6ef660c22abc6f0f",
    "cross_cats_sorted": [
      "physics.ed-ph",
      "physics.pop-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2009-08-01T17:36:55Z",
    "title_canon_sha256": "19245d3a93a6984f076557731c51d9ec96efb032c5f15e0dcdd70ae96fdbcbf3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.0090",
    "kind": "arxiv",
    "version": 1
  }
}