Pith Number

pith:4L7D2BBY

pith:2026:4L7D2BBYHTK6GWNLE3DJUXEMP4

not attested not anchored not stored refs pending

Natural Selection in the Wake of Catastrophe

David Pincus, Jesse Young Lin, Joshua Sodicoff, Omer Granek, Seppe Kuehn, Vincenzo Vitelli

arxiv:2606.09040 v1 · 2026-06-08 · q-bio.PE · cond-mat.stat-mech · 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{4L7D2BBYHTK6GWNLE3DJUXEMP4}

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	2026-06-09T02:07:55.126983Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e2fe3d04383cd5e359ab26c69a5c8c7f051dbb95c3494fc5fc66da6df36112ba

Aliases

arxiv: 2606.09040 · arxiv_version: 2606.09040v1 · doi: 10.48550/arxiv.2606.09040 · pith_short_12: 4L7D2BBYHTK6 · pith_short_16: 4L7D2BBYHTK6GWNL · pith_short_8: 4L7D2BBY

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/4L7D2BBYHTK6GWNLE3DJUXEMP4 \
  | 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: e2fe3d04383cd5e359ab26c69a5c8c7f051dbb95c3494fc5fc66da6df36112ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0f4aa80e146b2af8ddf5ee93b9587af7c9416fd5a004b820e682b1c20a237ba3",
    "cross_cats_sorted": [
      "cond-mat.stat-mech",
      "physics.bio-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2026-06-08T05:12:28Z",
    "title_canon_sha256": "5f1446e9b64caea658c078ee471471b403013eba3de56ae2f3dc4f6abef4efab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.09040",
    "kind": "arxiv",
    "version": 1
  }
}