Pith Number

pith:QX42UZT3

pith:2015:QX42UZT3GI5V7M7SOKKPHJH7ZX

not attested not anchored not stored refs pending

Simple model for the Darwinian transition in early evolution

Hinrich Arnoldt, Marc Timme, Steven H. Strogatz

arxiv:1501.05073 v1 · 2015-01-21 · q-bio.PE · cond-mat.stat-mech · nlin.AO · physics.bio-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{QX42UZT3GI5V7M7SOKKPHJH7ZX}

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	2026-05-18T01:26:48.947366Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

85f9aa667b323b5fb3f27294f3a4ffcdc34ba5c4902a254d3f374b19e586f73f

Aliases

arxiv: 1501.05073 · arxiv_version: 1501.05073v1 · doi: 10.48550/arxiv.1501.05073 · pith_short_12: QX42UZT3GI5V · pith_short_16: QX42UZT3GI5V7M7S · pith_short_8: QX42UZT3

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/QX42UZT3GI5V7M7SOKKPHJH7ZX \
  | 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: 85f9aa667b323b5fb3f27294f3a4ffcdc34ba5c4902a254d3f374b19e586f73f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a402fe7453491a0f07a98f2a16732e97ed2d75646682cfdd40f3b98de378aa91",
    "cross_cats_sorted": [
      "cond-mat.stat-mech",
      "nlin.AO",
      "physics.bio-ph"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2015-01-21T07:02:55Z",
    "title_canon_sha256": "842c140ac72bcee57ff0724a0a6b3b05ba1d6beab4bd7d52dee975221c8d94ca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.05073",
    "kind": "arxiv",
    "version": 1
  }
}