Pith Number

pith:4HVWNHYY

pith:2011:4HVWNHYYQACBU3KH3SUFLITHLZ

not attested not anchored not stored refs pending

Ball lightning observation: an objective video-camera analysis report

Enrico Paganini, Paolo Viviani, Stefano Sello

arxiv:1102.2829 v2 · 2011-02-04 · physics.gen-ph · 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{4HVWNHYYQACBU3KH3SUFLITHLZ}

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	2026-05-18T04:28:21.295849Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1eb669f1880041a6d47dca855a2675e491a826e0d2fc0bb02dcf7f52e6c357c

Aliases

arxiv: 1102.2829 · arxiv_version: 1102.2829v2 · doi: 10.48550/arxiv.1102.2829 · pith_short_12: 4HVWNHYYQACB · pith_short_16: 4HVWNHYYQACBU3KH · pith_short_8: 4HVWNHYY

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/4HVWNHYYQACBU3KH3SUFLITHLZ \
  | 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: e1eb669f1880041a6d47dca855a2675e491a826e0d2fc0bb02dcf7f52e6c357c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "91ab22ea19f58addec147a1874c40a262ea5fd35b8e921bde09289109aa22c43",
    "cross_cats_sorted": [
      "physics.class-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.gen-ph",
    "submitted_at": "2011-02-04T09:13:38Z",
    "title_canon_sha256": "a9879a59c6a8bf644598ab94d90a9147850a71ff57998e5c21dd2da09c1638e9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.2829",
    "kind": "arxiv",
    "version": 2
  }
}