Pith Number

pith:FEYBM3HH

pith:2011:FEYBM3HHCRZYER5Q5ACOAE3PXG

not attested not anchored not stored refs pending

The Steppenwolf: A proposal for a habitable planet in interstellar space

Dorian S. Abbot, Eric R. Switzer

arxiv:1102.1108 v2 · 2011-02-05 · 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{FEYBM3HHCRZYER5Q5ACOAE3PXG}

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	2026-05-18T02:03:16.306881Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2930166ce714738247b0e804e0136fb99aad0840fdc781428b664070f0dba44f

Aliases

arxiv: 1102.1108 · arxiv_version: 1102.1108v2 · doi: 10.48550/arxiv.1102.1108 · pith_short_12: FEYBM3HHCRZY · pith_short_16: FEYBM3HHCRZYER5Q · pith_short_8: FEYBM3HH

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/FEYBM3HHCRZYER5Q5ACOAE3PXG \
  | 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: 2930166ce714738247b0e804e0136fb99aad0840fdc781428b664070f0dba44f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e33c3a9a0d98e71c97033c43bca7dd7495049552ebea2a8fd313462213176fa8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2011-02-05T23:36:08Z",
    "title_canon_sha256": "c03ae4b0b1fabf887d8268a189b2bb1ccad4cc70f57217c3872922437ac854c9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.1108",
    "kind": "arxiv",
    "version": 2
  }
}