Pith Number

pith:HNFXU2N4

pith:2009:HNFXU2N4RR2U6CPKPX237RMUS4

not attested not anchored not stored refs pending

Thermodynamic Efficiency and Entropy Production in the Climate System

Valerio Lucarini

arxiv:0901.1993 v2 · 2009-01-14 · physics.ao-ph · cond-mat.stat-mech · physics.class-ph · physics.flu-dyn · physics.geo-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{HNFXU2N4RR2U6CPKPX237RMUS4}

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	2026-05-18T04:11:29.192395Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3b4b7a69bc8c754f09ea7df5bfc594973ded6ceb4a8e54689db92de67ab11265

Aliases

arxiv: 0901.1993 · arxiv_version: 0901.1993v2 · doi: 10.48550/arxiv.0901.1993 · pith_short_12: HNFXU2N4RR2U · pith_short_16: HNFXU2N4RR2U6CPK · pith_short_8: HNFXU2N4

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/HNFXU2N4RR2U6CPKPX237RMUS4 \
  | 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: 3b4b7a69bc8c754f09ea7df5bfc594973ded6ceb4a8e54689db92de67ab11265

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eeab7ff8bb3f7392d045d7407574c0b649580bf046ecdd7a24ce98b1bc7b3acd",
    "cross_cats_sorted": [
      "cond-mat.stat-mech",
      "physics.class-ph",
      "physics.flu-dyn",
      "physics.geo-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ao-ph",
    "submitted_at": "2009-01-14T12:50:03Z",
    "title_canon_sha256": "c9949c890744e609b84d4698260d5dafc3ac11be2ab08083611276ab9c839003"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.1993",
    "kind": "arxiv",
    "version": 2
  }
}