Pith Number

pith:Q2BYCTKS

pith:2012:Q2BYCTKSMYLELSHZY47OB6YW67

not attested not anchored not stored refs pending

On the probability of habitable planets

Francois Forget

arxiv:1212.0113 v2 · 2012-12-01 · 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{Q2BYCTKSMYLELSHZY47OB6YW67}

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	2026-05-18T03:26:20.504893Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8683814d52661645c8f9c73ee0fb16f7c46dbc2ffd1efe5a3a282dfe3825154b

Aliases

arxiv: 1212.0113 · arxiv_version: 1212.0113v2 · doi: 10.48550/arxiv.1212.0113 · pith_short_12: Q2BYCTKSMYLE · pith_short_16: Q2BYCTKSMYLELSHZ · pith_short_8: Q2BYCTKS

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/Q2BYCTKSMYLELSHZY47OB6YW67 \
  | 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: 8683814d52661645c8f9c73ee0fb16f7c46dbc2ffd1efe5a3a282dfe3825154b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0f1080d2d9a3196fcf5051b9c13d8d2bdfccbc8f326179c33e64da32b2eabccb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2012-12-01T13:42:30Z",
    "title_canon_sha256": "2c3aa01e844babf74fc18c878edbfb284194baf0c05c4e2713efb8694df80469"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.0113",
    "kind": "arxiv",
    "version": 2
  }
}