Pith Number

pith:N5MHDN4N

pith:2013:N5MHDN4NSZF4HTWAKVUQ3ULZHB

not attested not anchored not stored refs pending

A critique of Sadi Carnot's work and a mathematical theory of the caloric

N.D. Hari Dass

arxiv:1306.1939 v1 · 2013-06-08 · physics.hist-ph · physics.class-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{N5MHDN4NSZF4HTWAKVUQ3ULZHB}

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	2026-05-18T03:21:09.931199Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6f5871b78d964bc3cec055690dd179386e8f9c10c702816bc3ea2c9b20b9869a

Aliases

arxiv: 1306.1939 · arxiv_version: 1306.1939v1 · doi: 10.48550/arxiv.1306.1939 · pith_short_12: N5MHDN4NSZF4 · pith_short_16: N5MHDN4NSZF4HTWA · pith_short_8: N5MHDN4N

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/N5MHDN4NSZF4HTWAKVUQ3ULZHB \
  | 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: 6f5871b78d964bc3cec055690dd179386e8f9c10c702816bc3ea2c9b20b9869a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d147b40c76f8dcf146d897499ee081a91206f61fa44faf4fc89fe5f0b6f7caac",
    "cross_cats_sorted": [
      "physics.class-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2013-06-08T16:16:36Z",
    "title_canon_sha256": "46322088fe811b1a46fd082a925e22bc8233242d90ba701e8f351ca88a7bbd80"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.1939",
    "kind": "arxiv",
    "version": 1
  }
}