Pith Number

pith:7G7CLW74

pith:2025:7G7CLW744KXDWIPZAGOWOFHC3G

not attested not anchored not stored refs pending

Life on the Edge: Using Planetary Context to Enhance Biosignatures and Avoid False Positives

Arwen E. Nicholson, Nathan J. Mayne, Rudy Arthur

arxiv:2504.18431 v1 · 2025-04-25 · astro-ph.EP · q-bio.PE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7G7CLW744KXDWIPZAGOWOFHC3G}

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.

Cited by

1 paper in Pith

A generalised microbial cell model for methane biosignature predictions

Receipt and verification

First computed	2026-07-05T12:00:00.284748Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9be25dbfce2ae3b21f9019d6714e2d9bec4ea4d99b82175e64f0d72309ddef5

Aliases

arxiv: 2504.18431 · arxiv_version: 2504.18431v1 · doi: 10.48550/arxiv.2504.18431 · pith_short_12: 7G7CLW744KXD · pith_short_16: 7G7CLW744KXDWIPZ · pith_short_8: 7G7CLW74

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/7G7CLW744KXDWIPZAGOWOFHC3G \
  | 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: f9be25dbfce2ae3b21f9019d6714e2d9bec4ea4d99b82175e64f0d72309ddef5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ca607f5f8960e24c47db80862f6a1c6513e3dd2bb66a631b1c168eb52151f74",
    "cross_cats_sorted": [
      "q-bio.PE"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2025-04-25T15:44:28Z",
    "title_canon_sha256": "64cfa10905588fba3d41c7bb2ef8c2ce342010e5b6632f2f48429424aea4e4ad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.18431",
    "kind": "arxiv",
    "version": 1
  }
}