Pith Number

pith:63DB6CAM

pith:2009:63DB6CAMQMRGJSAETMBUCNAB7V

not attested not anchored not stored refs pending

A Paradigm Shift from Production Function to Production Copula: Statistical Description of Production Activity of Firms

H. Aoyama, H. Iyetomi, W. Souma, Y. Fujiwara, Y. Ikeda

arxiv:0902.1576 v3 · 2009-02-10 · q-fin.GN · q-fin.ST

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{63DB6CAMQMRGJSAETMBUCNAB7V}

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	2026-05-18T04:35:05.492998Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f6c61f080c832264c8049b03413401fd65669360155203968b0bdd5f9fab2ec2

Aliases

arxiv: 0902.1576 · arxiv_version: 0902.1576v3 · doi: 10.48550/arxiv.0902.1576 · pith_short_12: 63DB6CAMQMRG · pith_short_16: 63DB6CAMQMRGJSAE · pith_short_8: 63DB6CAM

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/63DB6CAMQMRGJSAETMBUCNAB7V \
  | 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: f6c61f080c832264c8049b03413401fd65669360155203968b0bdd5f9fab2ec2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "342339c21721aed8c85f9d4247874f2ecc6dcb151b2cb48b726f537e7e9f1794",
    "cross_cats_sorted": [
      "q-fin.ST"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-fin.GN",
    "submitted_at": "2009-02-10T03:46:34Z",
    "title_canon_sha256": "1a315f4815ecdbb74878857d43cffa9bf94ae99687297344697ec083f9691539"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.1576",
    "kind": "arxiv",
    "version": 3
  }
}