Pith Number

pith:FAPEIIXA

pith:2008:FAPEIIXAF5JJTQUO5VDV3MFW6C

not attested not anchored not stored refs pending

Source of the observed thermodynamic arrow

L. S. Schulman

arxiv:0811.2787 v1 · 2008-11-17 · cond-mat.stat-mech · astro-ph · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FAPEIIXAF5JJTQUO5VDV3MFW6C}

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	2026-05-18T02:15:20.756539Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

281e4422e02f5299c28eed475db0b6f0ae641bf4e132c27d0dc5795984a4733c

Aliases

arxiv: 0811.2787 · arxiv_version: 0811.2787v1 · doi: 10.48550/arxiv.0811.2787 · pith_short_12: FAPEIIXAF5JJ · pith_short_16: FAPEIIXAF5JJTQUO · pith_short_8: FAPEIIXA

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/FAPEIIXAF5JJTQUO5VDV3MFW6C \
  | 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: 281e4422e02f5299c28eed475db0b6f0ae641bf4e132c27d0dc5795984a4733c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dd858e97b5a7ee91f2c77ba80205ee96ebba979ce633aff1666e5ab6e26a80af",
    "cross_cats_sorted": [
      "astro-ph",
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.stat-mech",
    "submitted_at": "2008-11-17T20:44:01Z",
    "title_canon_sha256": "5fb9a32abf2dcd259445e459ed7f29ca5926989fcac2374168b2db9a711b94b8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0811.2787",
    "kind": "arxiv",
    "version": 1
  }
}