Pith Number

pith:KPNFT522

pith:2013:KPNFT522RK33D4Z4R26FEFLNFH

not attested not anchored not stored refs pending

Characterizing the purple Earth: Modelling the globally-integrated spectral variability of the Archean Earth

A. M. Guti\'errez-Navarro, E. Pall\'e, E. Sanrom\'a, M. N. Parenteau, N. Y. Kiang, P. Monta\~n\'es-Rodr\'iguez, R. L\'opez

arxiv:1311.1145 v1 · 2013-11-05 · 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{KPNFT522RK33D4Z4R26FEFLNFH}

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	2026-05-18T01:46:38.720815Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

53da59f75a8ab7b1f33c8ebc52156d29ed6010c29dcf01d7e7701ff9a6cbd68f

Aliases

arxiv: 1311.1145 · arxiv_version: 1311.1145v1 · doi: 10.48550/arxiv.1311.1145 · pith_short_12: KPNFT522RK33 · pith_short_16: KPNFT522RK33D4Z4 · pith_short_8: KPNFT522

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/KPNFT522RK33D4Z4R26FEFLNFH \
  | 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: 53da59f75a8ab7b1f33c8ebc52156d29ed6010c29dcf01d7e7701ff9a6cbd68f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "62191ded96ed69e960a5cac322170dd1f43d63cfa1f2ed73e551f4ff70c9f48c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2013-11-05T17:59:48Z",
    "title_canon_sha256": "ac225f3a92bd01cd74fc9dc37947fd52d93ba12f5243857799dda49603dec278"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.1145",
    "kind": "arxiv",
    "version": 1
  }
}