Pith Number

pith:K43KN4A7

pith:2010:K43KN4A7ET2CZ74LVDSMTXLFPT

not attested not anchored not stored refs pending

Food web framework for size-structured populations

Jan E. Beyer, Ken H. Andersen, Martin Hartvig

arxiv:1004.4138 v2 · 2010-04-23 · 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{K43KN4A7ET2CZ74LVDSMTXLFPT}

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	2026-05-18T02:24:16.267811Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5736a6f01f24f42cff8ba8e4c9dd657cdf5b04b03e8ed4bdad8f55b359c9318d

Aliases

arxiv: 1004.4138 · arxiv_version: 1004.4138v2 · doi: 10.48550/arxiv.1004.4138 · pith_short_12: K43KN4A7ET2C · pith_short_16: K43KN4A7ET2CZ74L · pith_short_8: K43KN4A7

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/K43KN4A7ET2CZ74LVDSMTXLFPT \
  | 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: 5736a6f01f24f42cff8ba8e4c9dd657cdf5b04b03e8ed4bdad8f55b359c9318d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "03dd572ed9072f6c973438a07c072e3d6d035d05d50684a224194434d3afc204",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2010-04-23T14:14:40Z",
    "title_canon_sha256": "843062f6521de4461280cb3d0c34d243ce353ea4fa988eb5a1cad0b98cfecdc8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.4138",
    "kind": "arxiv",
    "version": 2
  }
}