Pith Number

pith:3Y63YPA6

pith:2026:3Y63YPA6RF73HDFSF4J55BHTNJ

not attested not anchored not stored refs pending

Motion of a ball rolled over a shallow step

Keith Zengel, Laruen Boehnert

arxiv:2605.20481 v1 · 2026-05-19 · physics.ed-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{3Y63YPA6RF73HDFSF4J55BHTNJ}

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	2026-05-21T01:04:39.308964Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de3dbc3c1e897fb38cb22f13de84f36a43cbd033363fa19ecf76ebd8f181b355

Aliases

arxiv: 2605.20481 · arxiv_version: 2605.20481v1 · doi: 10.48550/arxiv.2605.20481 · pith_short_12: 3Y63YPA6RF73 · pith_short_16: 3Y63YPA6RF73HDFS · pith_short_8: 3Y63YPA6

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/3Y63YPA6RF73HDFSF4J55BHTNJ \
  | 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: de3dbc3c1e897fb38cb22f13de84f36a43cbd033363fa19ecf76ebd8f181b355

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "386fdb0c76d254c4be7f695912d1582619eea07ec74583e6c59180caeb67275f",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2026-05-19T20:42:59Z",
    "title_canon_sha256": "a250fda06ebe378a0091eed3819d35348e8e395415f8c7c6a31d49556052a2d4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.20481",
    "kind": "arxiv",
    "version": 1
  }
}