Pith Number

pith:4ZZIARRF

pith:2004:4ZZIARRFG5YBZUSM25OWLQSPGX

not attested not anchored not stored refs pending

Where Did The Moon Come From?

Edward Belbruno, J. Richard Gott III (Princeton)

arxiv:astro-ph/0405372 v2 · 2004-05-19 · astro-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{4ZZIARRFG5YBZUSM25OWLQSPGX}

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	2026-05-18T02:40:26.400347Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e67280462537701cd24cd75d65c24f35fe2e80809f711ab92c28e1701ea623f6

Aliases

arxiv: astro-ph/0405372 · arxiv_version: astro-ph/0405372v2 · doi: 10.48550/arxiv.astro-ph/0405372 · pith_short_12: 4ZZIARRFG5YB · pith_short_16: 4ZZIARRFG5YBZUSM · pith_short_8: 4ZZIARRF

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/4ZZIARRFG5YBZUSM25OWLQSPGX \
  | 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: e67280462537701cd24cd75d65c24f35fe2e80809f711ab92c28e1701ea623f6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "20017b88ddeb4f918a11f18a05edc5077f581874e151f7e3de516d52062db941",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-05-19T18:41:11Z",
    "title_canon_sha256": "dd553c9b02dd9b0c1119412e5d118b9b059d47e0d8cbd2ce3e1dc7e840f0f36f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0405372",
    "kind": "arxiv",
    "version": 2
  }
}