Pith Number

pith:LBLSGVYF

pith:2018:LBLSGVYF3IBKFNMWEQQS5VCOI3

not attested not anchored not stored refs pending

Dependence of Biological Activity on the Surface Water Fraction of Planets

Abraham Loeb, Manasvi Lingam

arxiv:1809.09118 v2 · 2018-09-24 · 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{LBLSGVYF3IBKFNMWEQQS5VCOI3}

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	2026-05-17T23:57:02.558811Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5857235705da02a2b59624212ed44e46dda9c1eb9241547854e8289d491a9334

Aliases

arxiv: 1809.09118 · arxiv_version: 1809.09118v2 · doi: 10.48550/arxiv.1809.09118 · pith_short_12: LBLSGVYF3IBK · pith_short_16: LBLSGVYF3IBKFNMW · pith_short_8: LBLSGVYF

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/LBLSGVYF3IBKFNMWEQQS5VCOI3 \
  | 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: 5857235705da02a2b59624212ed44e46dda9c1eb9241547854e8289d491a9334

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d87bcd0c62247c822e59bd8ccff2252abc83fda30a6890e38ab423bf2ca59cf3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2018-09-24T18:00:03Z",
    "title_canon_sha256": "79c61f7395b7ecdbf59e932bf7c280dbca36c272f0fb3214a59f960aa1a67405"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.09118",
    "kind": "arxiv",
    "version": 2
  }
}