Pith Number

pith:AOJ73ZAD

pith:2017:AOJ73ZAD6SR23JNIUD6KCVYPRS

not attested not anchored not stored refs pending

An Aerodynamic Analysis of Recent FIFA World Cup Balls

Adrian L. Kiratidis, Derek B. Leinweber

arxiv:1710.02784 v2 · 2017-10-08 · 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{AOJ73ZAD6SR23JNIUD6KCVYPRS}

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	2026-05-18T00:23:08.311720Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0393fde403f4a3ada5a8a0fca1570f8ca5b72867f80a739a456af1c8864212f0

Aliases

arxiv: 1710.02784 · arxiv_version: 1710.02784v2 · doi: 10.48550/arxiv.1710.02784 · pith_short_12: AOJ73ZAD6SR2 · pith_short_16: AOJ73ZAD6SR23JNI · pith_short_8: AOJ73ZAD

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/AOJ73ZAD6SR23JNIUD6KCVYPRS \
  | 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: 0393fde403f4a3ada5a8a0fca1570f8ca5b72867f80a739a456af1c8864212f0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a97bd32cfe656fe3eb3ee1e3c4813a49ad4f6ebe6daa4840d5ccc7e469b79076",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.pop-ph",
    "submitted_at": "2017-10-08T05:44:46Z",
    "title_canon_sha256": "1d54da26caf5ed6f07019b8f3ee4bd9355cd1042de796730f8de069b8032d583"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.02784",
    "kind": "arxiv",
    "version": 2
  }
}