Pith Number

pith:GKPHGBQU

pith:2010:GKPHGBQUYOW3SH3ZOBF2FSQLOJ

not attested not anchored not stored refs pending

Sensitivity of Biomarkers to Changes in Chemical Emissions in the Earth's Proterozoic Atmosphere

Barbara Stracke, Beate Patzer, Heike Rauer, John Lee Grenfell, Mareike Godolt, Pascal Hedelt, Philip von Paris, Stefanie Gebauer

arxiv:1009.0439 v1 · 2010-09-02 · 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{GKPHGBQUYOW3SH3ZOBF2FSQLOJ}

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	2026-05-18T02:05:37.906744Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

329e730614c3adb91f79704ba2ca0b726bb877dc7d6feeb0d4b6fe6d9764bfa6

Aliases

arxiv: 1009.0439 · arxiv_version: 1009.0439v1 · doi: 10.48550/arxiv.1009.0439 · pith_short_12: GKPHGBQUYOW3 · pith_short_16: GKPHGBQUYOW3SH3Z · pith_short_8: GKPHGBQU

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/GKPHGBQUYOW3SH3ZOBF2FSQLOJ \
  | 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: 329e730614c3adb91f79704ba2ca0b726bb877dc7d6feeb0d4b6fe6d9764bfa6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fea161713d4a66ffb4f7c3247456ffd3d31b059fb10773034b6f6e0909c9bb56",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2010-09-02T14:55:50Z",
    "title_canon_sha256": "2a77166994e1b83065ba76e7e17fcdd41cec3b6aeee21ce413235726f546af20"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.0439",
    "kind": "arxiv",
    "version": 1
  }
}