Pith Number

pith:B6A5XG2P

pith:2012:B6A5XG2PWFL6L7J2VQNGOHMC6O

not attested not anchored not stored refs pending

Barn and Pole paradox: revisited

Asim Gangopadhyaya, Robert Cacioppo

arxiv:1203.5333 v1 · 2012-03-23 · physics.class-ph · 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{B6A5XG2PWFL6L7J2VQNGOHMC6O}

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	2026-05-18T01:58:02.349803Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0f81db9b4fb157e5fd3aac1a671d82f3b8bec075158c2348cfec9dd97e02f053

Aliases

arxiv: 1203.5333 · arxiv_version: 1203.5333v1 · doi: 10.48550/arxiv.1203.5333 · pith_short_12: B6A5XG2PWFL6 · pith_short_16: B6A5XG2PWFL6L7J2 · pith_short_8: B6A5XG2P

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/B6A5XG2PWFL6L7J2VQNGOHMC6O \
  | 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: 0f81db9b4fb157e5fd3aac1a671d82f3b8bec075158c2348cfec9dd97e02f053

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eb80ba61806cdea0211bca6bfdb4985919e5ce11e3f0da03b2d6da7706f08a13",
    "cross_cats_sorted": [
      "physics.ed-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2012-03-23T11:25:31Z",
    "title_canon_sha256": "d04db7df38a9ce27a02344aeb2c1234acd33971450fc30a4606b582b0c8df491"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.5333",
    "kind": "arxiv",
    "version": 1
  }
}