Pith Number

pith:PYX4KDYM

pith:2010:PYX4KDYMWNSBW3ZB72WIXVOSUU

not attested not anchored not stored refs pending

Shennan-type evolution of stone-age cultural innovation

D. Stauffer, F.W.S. Lima

arxiv:1009.0973 v2 · 2010-09-06 · q-bio.PE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PYX4KDYMWNSBW3ZB72WIXVOSUU}

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	2026-05-18T04:15:59.533156Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e2fc50f0cb3641b6f21feac8bd5d2a505f8c93c96302a77ccaf1ff15a718559

Aliases

arxiv: 1009.0973 · arxiv_version: 1009.0973v2 · doi: 10.48550/arxiv.1009.0973 · pith_short_12: PYX4KDYMWNSB · pith_short_16: PYX4KDYMWNSBW3ZB · pith_short_8: PYX4KDYM

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/PYX4KDYMWNSBW3ZB72WIXVOSUU \
  | 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: 7e2fc50f0cb3641b6f21feac8bd5d2a505f8c93c96302a77ccaf1ff15a718559

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c0edeaed5c2d80f35a079025f6dffc1344374f6f443b18012b85616ecaeaa342",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2010-09-06T06:18:00Z",
    "title_canon_sha256": "286bb221f0403a440c75ed1c981c852fca70d62cefe641fd9ebbe75cdeb9636f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.0973",
    "kind": "arxiv",
    "version": 2
  }
}