Pith Number

pith:454V54YN

pith:2015:454V54YNHSLREKX3WLI6FGBLCT

not attested not anchored not stored refs pending

Home-run probability as a function of the coefficient of restitution of baseballs

Hiroshi Mizutani, Hiroto Kuninaka, Ikuma Kosaka

arxiv:1509.07149 v2 · 2015-08-15 · physics.soc-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{454V54YNHSLREKX3WLI6FGBLCT}

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	2026-05-18T01:23:18.590293Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e7795ef30d3c97122afbb2d1e2982b14c87463ce7f83b1a699b669c57515bd1a

Aliases

arxiv: 1509.07149 · arxiv_version: 1509.07149v2 · doi: 10.48550/arxiv.1509.07149 · pith_short_12: 454V54YNHSLR · pith_short_16: 454V54YNHSLREKX3 · pith_short_8: 454V54YN

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/454V54YNHSLREKX3WLI6FGBLCT \
  | 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: e7795ef30d3c97122afbb2d1e2982b14c87463ce7f83b1a699b669c57515bd1a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "81ee7e6e9574c0e3d3b6496a417ef475434256e769c00a76e0cceec491c9f8be",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2015-08-15T10:47:23Z",
    "title_canon_sha256": "b5ec1abc40d919cb4b8be143fd070a72d1444c6ce9373484f0adf7fbd6e887da"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.07149",
    "kind": "arxiv",
    "version": 2
  }
}