Pith Number

pith:5OC4GLMD

pith:2015:5OC4GLMDYZEY3JCLWE5EYZQAGL

not attested not anchored not stored refs pending

A Hybrid Intelligent Model for Software Cost Estimation

Ali Bou Nassif, Danny Ho, Luiz Fernando Capretz, Wei Lin Du

arxiv:1512.00306 v1 · 2015-12-01 · cs.SE · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5OC4GLMDYZEY3JCLWE5EYZQAGL}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T01:25:32.271478Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eb85c32d83c6498da44bb13a4c660032c8a46a8e3551273bd91acff2f8c8e93d

Aliases

arxiv: 1512.00306 · arxiv_version: 1512.00306v1 · doi: 10.48550/arxiv.1512.00306 · pith_short_12: 5OC4GLMDYZEY · pith_short_16: 5OC4GLMDYZEY3JCL · pith_short_8: 5OC4GLMD

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/5OC4GLMDYZEY3JCLWE5EYZQAGL \
  | 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: eb85c32d83c6498da44bb13a4c660032c8a46a8e3551273bd91acff2f8c8e93d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c69a496103ce2ff384deb39493bfe1641f5e362a7a1738b0ec91b45c0849a525",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2015-12-01T15:47:29Z",
    "title_canon_sha256": "aa9d75f6fe815dfbe94885e7ef127b7e4da6bf8220971c81f09d21f04fb575e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.00306",
    "kind": "arxiv",
    "version": 1
  }
}