Pith Number

pith:GPYP3FM2

pith:2003:GPYP3FM2NKT3WDDTXB5CKEK3HR

not attested not anchored not stored refs pending

Suppression of Ecological Competition by Apex Predator

Shigemi Ohta, Taksu Cheon

arxiv:cond-mat/0308163 v2 · 2003-08-08 · cond-mat · nlin.AO · physics.bio-ph · q-bio.QM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GPYP3FM2NKT3WDDTXB5CKEK3HR}

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	2026-07-04T16:39:17.602663Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

33f0fd959a6aa7bb0c73b87a25115b3c4f29e0e72b638c13eea89aa1cdfc4c34

Aliases

arxiv: cond-mat/0308163 · arxiv_version: cond-mat/0308163v2 · doi: 10.48550/arxiv.cond-mat/0308163 · pith_short_12: GPYP3FM2NKT3 · pith_short_16: GPYP3FM2NKT3WDDT · pith_short_8: GPYP3FM2

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/GPYP3FM2NKT3WDDTXB5CKEK3HR \
  | 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: 33f0fd959a6aa7bb0c73b87a25115b3c4f29e0e72b638c13eea89aa1cdfc4c34

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "849c65d4488e0bca3ff09329a95c70b5ad1c49e16c389022780a0315648ec5ba",
    "cross_cats_sorted": [
      "nlin.AO",
      "physics.bio-ph",
      "q-bio.QM"
    ],
    "license": "",
    "primary_cat": "cond-mat",
    "submitted_at": "2003-08-08T13:57:10Z",
    "title_canon_sha256": "b1c8d10a06b89e7858102f284aaab640957f7b7e2dd00010d77e3d5faa624dd4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cond-mat/0308163",
    "kind": "arxiv",
    "version": 2
  }
}