Pith Number

pith:JL5MYTDI

pith:2014:JL5MYTDIWS4XUGUNV2N7BPOXQ2

not attested not anchored not stored refs pending

A Necro-Biological Explanation for the Fermi Paradox

Franck Selsis, Stephen R. Kane

arxiv:1403.8146 v2 · 2014-03-31 · physics.pop-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{JL5MYTDIWS4XUGUNV2N7BPOXQ2}

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	2026-05-18T02:52:57.587468Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4afacc4c68b4b97a1a8dae9bf0bdd7868f5d61a5109a235cbbe8cd13db8c2678

Aliases

arxiv: 1403.8146 · arxiv_version: 1403.8146v2 · doi: 10.48550/arxiv.1403.8146 · pith_short_12: JL5MYTDIWS4X · pith_short_16: JL5MYTDIWS4XUGUN · pith_short_8: JL5MYTDI

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/JL5MYTDIWS4XUGUNV2N7BPOXQ2 \
  | 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: 4afacc4c68b4b97a1a8dae9bf0bdd7868f5d61a5109a235cbbe8cd13db8c2678

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f423bad88f243380a58839418b138190e9c49b264de67d80f7dbd440c6ae8cd5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.pop-ph",
    "submitted_at": "2014-03-31T19:47:01Z",
    "title_canon_sha256": "fe71295147a62362c678ace21f474c61ae617188aa60e67c8bf435115b9e34da"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.8146",
    "kind": "arxiv",
    "version": 2
  }
}