Pith Number

pith:7OTGYNOI

pith:2019:7OTGYNOIFCCFDXZDBNAPB7NBHQ

not attested not anchored not stored refs pending

The effects of ecological selection on species diversity and trait distribution: predictions and an empirical test

DeMalach Niv, Po-Ju Ke, Tadashi Fukami

arxiv:1908.07960 v2 · 2019-08-21 · 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{7OTGYNOIFCCFDXZDBNAPB7NBHQ}

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	2026-07-05T02:39:40.258412Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fba66c35c8288451df230b40f0fda13c288bf76e51fcce9898be4be110ddaecc

Aliases

arxiv: 1908.07960 · arxiv_version: 1908.07960v2 · doi: 10.48550/arxiv.1908.07960 · pith_short_12: 7OTGYNOIFCCF · pith_short_16: 7OTGYNOIFCCFDXZD · pith_short_8: 7OTGYNOI

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/7OTGYNOIFCCFDXZDBNAPB7NBHQ \
  | 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: fba66c35c8288451df230b40f0fda13c288bf76e51fcce9898be4be110ddaecc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b46e660993f2f0b7d79760a36922bf37794ad7d2a9b4c3f44774a1c9c5c415c0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2019-08-21T16:05:43Z",
    "title_canon_sha256": "fda98ed87c699b8eadbe48dc8511111bbd7db5c40047b455baebe8c0759d3feb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.07960",
    "kind": "arxiv",
    "version": 2
  }
}