Pith Number

pith:IOQWMPJV

pith:2018:IOQWMPJVCCEFN46SZDYVRFFFYU

not attested not anchored not stored refs pending

How neutral and niche forces contribute to speciation processes?

Amos Maritan, Jorge Hidalgo, Niccolo Anceschi, Samir Suweis, Tommaso Bellini

arxiv:1811.07623 v1 · 2018-11-19 · 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{IOQWMPJVCCEFN46SZDYVRFFFYU}

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	2026-05-18T00:00:23.940281Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

43a1663d35108856f3d2c8f15894a5c51aae3a95cf8f67d9eb1b0dc01221e764

Aliases

arxiv: 1811.07623 · arxiv_version: 1811.07623v1 · doi: 10.48550/arxiv.1811.07623 · pith_short_12: IOQWMPJVCCEF · pith_short_16: IOQWMPJVCCEFN46S · pith_short_8: IOQWMPJV

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/IOQWMPJVCCEFN46SZDYVRFFFYU \
  | 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: 43a1663d35108856f3d2c8f15894a5c51aae3a95cf8f67d9eb1b0dc01221e764

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "978c8104d701526a588a94a744fd556622646b14be0a0c947b6b443a1deec640",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2018-11-19T11:32:24Z",
    "title_canon_sha256": "cad10f0887e339003a59aa52e1dc8acbe9563f63735139569d6fde8aedd408bf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.07623",
    "kind": "arxiv",
    "version": 1
  }
}