Pith Number

pith:QSPK3SSB

pith:2011:QSPK3SSBUTLZW4GQOAKN2K2GR2

not attested not anchored not stored refs pending

Democritus and the motive power of fire

Fabrice Philippe (LIRMM), Jacques Arnaud (IES), Laurent Chusseau (IES)

arxiv:1104.0836 v2 · 2011-04-05 · 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{QSPK3SSBUTLZW4GQOAKN2K2GR2}

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	2026-05-18T03:43:52.946173Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

849eadca41a4d79b70d07014dd2b468eb51b10618bf7fc5b3134a314948ae2f5

Aliases

arxiv: 1104.0836 · arxiv_version: 1104.0836v2 · doi: 10.48550/arxiv.1104.0836 · pith_short_12: QSPK3SSBUTLZ · pith_short_16: QSPK3SSBUTLZW4GQ · pith_short_8: QSPK3SSB

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/QSPK3SSBUTLZW4GQOAKN2K2GR2 \
  | 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: 849eadca41a4d79b70d07014dd2b468eb51b10618bf7fc5b3134a314948ae2f5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cd52fefe3943b4c30b9bffd17b6fa0e13f4e87e7ac3d91a2387b654dfe00e60b",
    "cross_cats_sorted": [
      "physics.class-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2011-04-05T13:16:50Z",
    "title_canon_sha256": "ca7d6d79ea1418e4d0588381871390a9ae81fd0f692d159f841839b9d6848216"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.0836",
    "kind": "arxiv",
    "version": 2
  }
}