Pith Number

pith:2GPDDOZ4

pith:2013:2GPDDOZ4YLCYA57XVXHLHT2NTK

not attested not anchored not stored refs pending

Niche Modeling: Ecological Metaphors for Sustainable Software in Science

Andrea Thomer, Michael Twidale, Nicholas Weber

arxiv:1309.1810 v1 · 2013-09-07 · cs.SE · cs.CY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2GPDDOZ4YLCYA57XVXHLHT2NTK}

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	2026-05-18T03:13:57.453079Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d19e31bb3cc2c58077f7adceb3cf4d9ab96e34c0dbd1b870e8c71e064fabd3e7

Aliases

arxiv: 1309.1810 · arxiv_version: 1309.1810v1 · doi: 10.48550/arxiv.1309.1810 · pith_short_12: 2GPDDOZ4YLCY · pith_short_16: 2GPDDOZ4YLCYA57X · pith_short_8: 2GPDDOZ4

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/2GPDDOZ4YLCYA57XVXHLHT2NTK \
  | 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: d19e31bb3cc2c58077f7adceb3cf4d9ab96e34c0dbd1b870e8c71e064fabd3e7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "777fece7bc7cdf60c5c6c67230b439c47f835e458057fa7ed164efc62f9f689e",
    "cross_cats_sorted": [
      "cs.CY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2013-09-07T02:56:56Z",
    "title_canon_sha256": "8c8553c33965712891b6f61791468c401bee06ea037eca708212a6d8e5af96d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.1810",
    "kind": "arxiv",
    "version": 1
  }
}