Pith Number

pith:VJUBLC5N

pith:2013:VJUBLC5NJG5QW7ILFLUPEKQJVR

not attested not anchored not stored refs pending

A phase transition between the niche and neutral regimes in ecology

Charles K. Fisher, Pankaj Mehta

arxiv:1308.2969 v2 · 2013-08-13 · q-bio.PE · cond-mat.stat-mech

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VJUBLC5NJG5QW7ILFLUPEKQJVR}

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	2026-05-18T01:48:15.746081Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aa68158bad49bb0b7d0b2ae8f22a09ac4611cfa576aa743dd32fbeee13a86fe7

Aliases

arxiv: 1308.2969 · arxiv_version: 1308.2969v2 · doi: 10.48550/arxiv.1308.2969 · pith_short_12: VJUBLC5NJG5Q · pith_short_16: VJUBLC5NJG5QW7IL · pith_short_8: VJUBLC5N

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/VJUBLC5NJG5QW7ILFLUPEKQJVR \
  | 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: aa68158bad49bb0b7d0b2ae8f22a09ac4611cfa576aa743dd32fbeee13a86fe7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "87f79a9379abc58668e8381548f50ddeb7fb9a8cb64c632381d5a61f98a56976",
    "cross_cats_sorted": [
      "cond-mat.stat-mech"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2013-08-13T20:01:39Z",
    "title_canon_sha256": "904137e9d6801565f9801b6a900f1a4b7aae9a075245bd86e7646439d5f0c798"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.2969",
    "kind": "arxiv",
    "version": 2
  }
}