Pith Number

pith:VHYGSKEL

pith:2011:VHYGSKELJJRZFS7T6LCHCFRPR4

not attested not anchored not stored refs pending

The Occurrence Rate of Earth Analog Planets Orbiting Sunlike Stars

California Institute of Technology), Joseph Catanzarite, Michael Shao (Jet Propulsion Laboratory

arxiv:1103.1443 v3 · 2011-03-08 · astro-ph.EP · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VHYGSKELJJRZFS7T6LCHCFRPR4}

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	2026-05-18T02:02:58.458837Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a9f069288b4a6392cbf3f2c471162f8f08572e2df3c8add796f19714186a72fe

Aliases

arxiv: 1103.1443 · arxiv_version: 1103.1443v3 · doi: 10.48550/arxiv.1103.1443 · pith_short_12: VHYGSKELJJRZ · pith_short_16: VHYGSKELJJRZFS7T · pith_short_8: VHYGSKEL

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/VHYGSKELJJRZFS7T6LCHCFRPR4 \
  | 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: a9f069288b4a6392cbf3f2c471162f8f08572e2df3c8add796f19714186a72fe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ca7839af10509b47bccb3856c0cb65534aaf658796b755896715748a3c40ad0",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2011-03-08T06:11:58Z",
    "title_canon_sha256": "9dddec3a7e5a01f8107daa9b4aa17213247cfaeffa5ad82c5eaa9213cc8dbc25"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.1443",
    "kind": "arxiv",
    "version": 3
  }
}