Pith Number

pith:OG4BWDRX

pith:2014:OG4BWDRXRPFFOLL4FRVCPP3ZSL

not attested not anchored not stored refs pending

Entropy, biological evolution and the psychological arrow of time

Benjamin Knopp, Heinrich P\"as, Torsten Heinrich

arxiv:1401.3734 v2 · 2014-01-13 · physics.gen-ph · astro-ph.CO · q-bio.OT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OG4BWDRXRPFFOLL4FRVCPP3ZSL}

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	2026-05-18T01:25:47.731983Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

71b81b0e378bca572d7c2c6a27bf7992c7264a7ec059fd7d111c99bef2529e32

Aliases

arxiv: 1401.3734 · arxiv_version: 1401.3734v2 · doi: 10.48550/arxiv.1401.3734 · pith_short_12: OG4BWDRXRPFF · pith_short_16: OG4BWDRXRPFFOLL4 · pith_short_8: OG4BWDRX

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/OG4BWDRXRPFFOLL4FRVCPP3ZSL \
  | 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: 71b81b0e378bca572d7c2c6a27bf7992c7264a7ec059fd7d111c99bef2529e32

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "61b0cf6eb5a4d8d7757b69a1b4cc966ed410d453f5edb95764238766c1d68c23",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "q-bio.OT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.gen-ph",
    "submitted_at": "2014-01-13T22:18:58Z",
    "title_canon_sha256": "76eb8187f1659748b017aa4f595121917e829338b25ea5b99839e0dcd0ef0263"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.3734",
    "kind": "arxiv",
    "version": 2
  }
}