Pith Number

pith:2MKQYFL5

pith:2004:2MKQYFL5PMM3EWZQKL3N7GSBZV

not attested not anchored not stored refs pending

Quantitative patterns in the structure of model and empirical food webs

D. B. Stouffer, J. Camacho, L. A. N. Amaral, R. Guimera

arxiv:q-bio/0401023 v1 · 2004-01-16 · 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{2MKQYFL5PMM3EWZQKL3N7GSBZV}

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	2026-07-04T14:45:08.746639Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3150c157d7b19b25b3052f6df9a41cd7621308a69ffb247f1b3ad9cf8d66ccb

Aliases

arxiv: q-bio/0401023 · arxiv_version: q-bio/0401023v1 · doi: 10.48550/arxiv.q-bio/0401023 · pith_short_12: 2MKQYFL5PMM3 · pith_short_16: 2MKQYFL5PMM3EWZQ · pith_short_8: 2MKQYFL5

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/2MKQYFL5PMM3EWZQKL3N7GSBZV \
  | 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: d3150c157d7b19b25b3052f6df9a41cd7621308a69ffb247f1b3ad9cf8d66ccb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "71772a5a00535acdf9f7020fc4313497b306db4b165cd691b0c191036045909c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2004-01-16T23:11:04Z",
    "title_canon_sha256": "bd4a40989005792807b0feb2400b50eec22962d5a5bab722caea90e125c432dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "q-bio/0401023",
    "kind": "arxiv",
    "version": 1
  }
}