Pith Number

pith:7ZXWAXIK

pith:2013:7ZXWAXIKL3CD7X7JUZUG7UI4LE

not attested not anchored not stored refs pending

Five Misunderstandings About Case-Study Research

Bent Flyvbjerg

arxiv:1304.1186 v1 · 2013-04-02 · q-fin.GN

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7ZXWAXIKL3CD7X7JUZUG7UI4LE}

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	2026-05-18T03:29:04.302820Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe6f605d0a5ec43fdfe9a6686fd11c592fa47783d099ceb7df3c995923035957

Aliases

arxiv: 1304.1186 · arxiv_version: 1304.1186v1 · doi: 10.48550/arxiv.1304.1186 · pith_short_12: 7ZXWAXIKL3CD · pith_short_16: 7ZXWAXIKL3CD7X7J · pith_short_8: 7ZXWAXIK

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/7ZXWAXIKL3CD7X7JUZUG7UI4LE \
  | 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: fe6f605d0a5ec43fdfe9a6686fd11c592fa47783d099ceb7df3c995923035957

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b45c4cf30873795361db8fb0dafc14b64af34392a28c9c5746962a45863f9f0c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-fin.GN",
    "submitted_at": "2013-04-02T10:31:10Z",
    "title_canon_sha256": "f00bcf68e70a0f87fd54219bf05ba2c06f4efa0077fbfa2b2b9ec1153b9f5bfb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.1186",
    "kind": "arxiv",
    "version": 1
  }
}