Pith Number

pith:XJLPYLLG

pith:2009:XJLPYLLG75G77YX7QYRL3FYYV7

not attested not anchored not stored refs pending

Entropy production and the arrow of time

Christian Van den Broeck, Juan M.R. Parrondo, Ryoichi Kawai

arxiv:0904.1573 v1 · 2009-04-09 · 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{XJLPYLLG75G77YX7QYRL3FYYV7}

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	2026-05-18T00:44:39.237689Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ba56fc2d66ff4dffe2ff8622bd9718afc35418db3643067988e0cb6f50c35288

Aliases

arxiv: 0904.1573 · arxiv_version: 0904.1573v1 · doi: 10.48550/arxiv.0904.1573 · pith_short_12: XJLPYLLG75G7 · pith_short_16: XJLPYLLG75G77YX7 · pith_short_8: XJLPYLLG

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/XJLPYLLG75G77YX7QYRL3FYYV7 \
  | 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: ba56fc2d66ff4dffe2ff8622bd9718afc35418db3643067988e0cb6f50c35288

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d9e0b125b7736dc3c23e88f15f6ec300e9b09671c8f2f643ddb29e8a8a68ed46",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.stat-mech",
    "submitted_at": "2009-04-09T17:30:30Z",
    "title_canon_sha256": "a6927c2111c35a1363e5f3ed8bd4ce929f395c4a07c084ebb807bb6f7c65c4ff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.1573",
    "kind": "arxiv",
    "version": 1
  }
}