Pith Number

pith:UNB5SN6B

pith:2015:UNB5SN6BOAW36JXGP6ZEDDZ25L

not attested not anchored not stored refs pending

Thermodynamic optimization of a Penrose process: an engineers' approach to black hole thermodynamics

Alessandro Bravetti, Cesar S. Lopez-Monsalvo, Christine Gruber

arxiv:1511.06801 v1 · 2015-11-20 · gr-qc · astro-ph.HE · cond-mat.stat-mech

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UNB5SN6BOAW36JXGP6ZEDDZ25L}

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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

Holographic Stirling engines and the route to Carnot efficiency

Receipt and verification

First computed	2026-05-18T01:17:42.897417Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a343d937c1702dbf26e67fb2418f3aeaeb3d897ac5bd3c874d33f42d0a01bc14

Aliases

arxiv: 1511.06801 · arxiv_version: 1511.06801v1 · doi: 10.48550/arxiv.1511.06801 · pith_short_12: UNB5SN6BOAW3 · pith_short_16: UNB5SN6BOAW36JXG · pith_short_8: UNB5SN6B

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/UNB5SN6BOAW36JXGP6ZEDDZ25L \
  | 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: a343d937c1702dbf26e67fb2418f3aeaeb3d897ac5bd3c874d33f42d0a01bc14

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c377924a042193609c92fb47d0464a8d1db8e764d7dc3f64f4ef15ebe8b96f1f",
    "cross_cats_sorted": [
      "astro-ph.HE",
      "cond-mat.stat-mech"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2015-11-20T23:58:09Z",
    "title_canon_sha256": "bd44a9c2b635d1fce9b6d3db06e9afa9a510bf45d37221ef3190fa3b6a0f7ffc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.06801",
    "kind": "arxiv",
    "version": 1
  }
}