Pith Number

pith:NO2HPBHQ

pith:2009:NO2HPBHQCCMKQDHK2UBUXHTBXK

not attested not anchored not stored refs pending

A Case Study of the Modified Hirsch Index hm Accounting for Multiple Co-authors

Michael Schreiber

arxiv:0903.4960 v1 · 2009-03-28 · physics.soc-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NO2HPBHQCCMKQDHK2UBUXHTBXK}

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	2026-05-18T03:35:02.524214Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6bb47784f01098a80cead5034b9e61ba924d52423e163594e61991b88994cf50

Aliases

arxiv: 0903.4960 · arxiv_version: 0903.4960v1 · doi: 10.48550/arxiv.0903.4960 · pith_short_12: NO2HPBHQCCMK · pith_short_16: NO2HPBHQCCMKQDHK · pith_short_8: NO2HPBHQ

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/NO2HPBHQCCMKQDHK2UBUXHTBXK \
  | 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: 6bb47784f01098a80cead5034b9e61ba924d52423e163594e61991b88994cf50

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f4da90368069b927504762d1203a4c4f8bcb69ee5a6aacb4e0c9a72e6e1b221",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2009-03-28T10:01:42Z",
    "title_canon_sha256": "43aaa7b5ff31a2f1a5f324bb8348723fd175590007b8e3f43bec1be108ccc246"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.4960",
    "kind": "arxiv",
    "version": 1
  }
}