Pith Number

pith:V2JUXZRW

pith:2011:V2JUXZRWMCTESZXLJT4IBVEUDF

not attested not anchored not stored refs pending

How can one detect the rotation of the Earth "around the Moon"? Part 1: With a Foucault pendulum

Bertrand M. Roehner

arxiv:1112.5405 v1 · 2011-12-22 · physics.class-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{V2JUXZRWMCTESZXLJT4IBVEUDF}

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	2026-05-18T04:05:47.414883Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ae934be63660a64966eb4cf880d49419433888010cd27545188fc788cddd0e10

Aliases

arxiv: 1112.5405 · arxiv_version: 1112.5405v1 · doi: 10.48550/arxiv.1112.5405 · pith_short_12: V2JUXZRWMCTE · pith_short_16: V2JUXZRWMCTESZXL · pith_short_8: V2JUXZRW

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/V2JUXZRWMCTESZXLJT4IBVEUDF \
  | 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: ae934be63660a64966eb4cf880d49419433888010cd27545188fc788cddd0e10

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9756452e22a348b1340a686b03dc2b666492c29479a459f3c8d581f387421573",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2011-12-22T18:10:03Z",
    "title_canon_sha256": "95c67daf28904a8893c42ee2af85861bd41ae285339c05b07032d069d005f960"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.5405",
    "kind": "arxiv",
    "version": 1
  }
}