Pith Number

pith:ZWINIFVJ

pith:2012:ZWINIFVJXTPOUJDKFHMOEGOAMO

not attested not anchored not stored refs pending

The First Planets: the Critical Metallicity for Planet Formation

Hui Li (LANL), Jarrett L. Johnson (LANL, MPE)

arxiv:1203.4817 v1 · 2012-03-21 · 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{ZWINIFVJXTPOUJDKFHMOEGOAMO}

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	2026-05-18T01:58:04.856279Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cd90d416a9bcdeea246a29d8e219c0639c916b75b12c25798c28a1a31d8c5e14

Aliases

arxiv: 1203.4817 · arxiv_version: 1203.4817v1 · doi: 10.48550/arxiv.1203.4817 · pith_short_12: ZWINIFVJXTPO · pith_short_16: ZWINIFVJXTPOUJDK · pith_short_8: ZWINIFVJ

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/ZWINIFVJXTPOUJDKFHMOEGOAMO \
  | 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: cd90d416a9bcdeea246a29d8e219c0639c916b75b12c25798c28a1a31d8c5e14

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "de0ae4907f4b167d53b3285c7d2d27c62ccb4772775027761061c15daae49fe6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2012-03-21T20:00:11Z",
    "title_canon_sha256": "5198c55fac525f7a830b2698b15b496be4536da4022ce642d362d21cb2136fca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.4817",
    "kind": "arxiv",
    "version": 1
  }
}