Pith Number

pith:4CV5FBTM

pith:2012:4CV5FBTM7MQ4U6BAS5Y62BLFT3

not attested not anchored not stored refs pending

Care and feeding of frogs

Eugene Chiang (UC Berkeley), Margaret Pan

arxiv:1206.3972 v1 · 2012-06-18 · astro-ph.EP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4CV5FBTM7MQ4U6BAS5Y62BLFT3}

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	2026-05-18T03:53:18.248298Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e0abd2866cfb21ca78209771ed05659ed88cc86c9a0f3ef638b302d024b6a128

Aliases

arxiv: 1206.3972 · arxiv_version: 1206.3972v1 · doi: 10.48550/arxiv.1206.3972 · pith_short_12: 4CV5FBTM7MQ4 · pith_short_16: 4CV5FBTM7MQ4U6BA · pith_short_8: 4CV5FBTM

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/4CV5FBTM7MQ4U6BAS5Y62BLFT3 \
  | 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: e0abd2866cfb21ca78209771ed05659ed88cc86c9a0f3ef638b302d024b6a128

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3f75fa0ac224608e021a65e598fd53a0f8bac082f1e09e0b3a9b88e73bbc355b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2012-06-18T15:56:49Z",
    "title_canon_sha256": "723e436e687ec788bace296c7a504f64a08e2aa884b94358a7e1ba28b713c7ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1206.3972",
    "kind": "arxiv",
    "version": 1
  }
}