Pith Number

pith:WIWEKHQV

pith:2001:WIWEKHQV5YZ4BQO5FQ3IGNMCJ2

not attested not anchored not stored refs pending

The shape of ecological networks

Angelo Valleriani, Michael Lassig, Susanna C. Manrubia, Ugo Bastolla

arxiv:nlin/0101026 v1 · 2001-01-16 · nlin.AO · cond-mat · q-bio

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WIWEKHQV5YZ4BQO5FQ3IGNMCJ2}

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	2026-05-18T01:38:21.976243Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b22c451e15ee33c0c1dd2c368335824e94297b276425bc2941da5e9f2d5f11e5

Aliases

arxiv: nlin/0101026 · arxiv_version: nlin/0101026v1 · doi: 10.48550/arxiv.nlin/0101026 · pith_short_12: WIWEKHQV5YZ4 · pith_short_16: WIWEKHQV5YZ4BQO5 · pith_short_8: WIWEKHQV

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/WIWEKHQV5YZ4BQO5FQ3IGNMCJ2 \
  | 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: b22c451e15ee33c0c1dd2c368335824e94297b276425bc2941da5e9f2d5f11e5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2bdc5b5e04e59e412590e40dc38f3b0a713eeb1de779ab1a03a5857fff20b3dd",
    "cross_cats_sorted": [
      "cond-mat",
      "q-bio"
    ],
    "license": "",
    "primary_cat": "nlin.AO",
    "submitted_at": "2001-01-16T15:41:04Z",
    "title_canon_sha256": "dd362a6b269123995422142e4d48e24d611b5c9e3854147fec6a19307ec54dc2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "nlin/0101026",
    "kind": "arxiv",
    "version": 1
  }
}