Pith Number

pith:7JGICVY5

pith:2009:7JGICVY5FJB6BUEHSMZ5HQGAMA

not attested not anchored not stored refs pending

Non-neutral theory of biodiversity

Ginestra Bianconi, Luca Ferretti, Silvio Franz

arxiv:0903.1753 v2 · 2009-03-10 · q-bio.PE · cond-mat.dis-nn · cond-mat.stat-mech · q-bio.OT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7JGICVY5FJB6BUEHSMZ5HQGAMA}

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	2026-05-18T02:14:36.218758Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fa4c81571d2a43e0d0879333d3c0c0603043e404a0f5035088ac906338bb1ecc

Aliases

arxiv: 0903.1753 · arxiv_version: 0903.1753v2 · doi: 10.48550/arxiv.0903.1753 · pith_short_12: 7JGICVY5FJB6 · pith_short_16: 7JGICVY5FJB6BUEH · pith_short_8: 7JGICVY5

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/7JGICVY5FJB6BUEHSMZ5HQGAMA \
  | 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: fa4c81571d2a43e0d0879333d3c0c0603043e404a0f5035088ac906338bb1ecc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c740f4a8aad8a5e3c480f2f31040ac1208c85717949eb1d713d2b1d24659cfb4",
    "cross_cats_sorted": [
      "cond-mat.dis-nn",
      "cond-mat.stat-mech",
      "q-bio.OT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2009-03-10T12:49:43Z",
    "title_canon_sha256": "ddf60029d0ce05dcd4e655a1c182d720267db4d08463d1154beee708672e30dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.1753",
    "kind": "arxiv",
    "version": 2
  }
}