Pith Number

pith:WHK3FMAK

pith:2013:WHK3FMAKAFNMJTKQULHADCL4TZ

not attested not anchored not stored refs pending

The H-index can be easily manipulated

Bart de Keijzer, Krzysztof R. Apt

arxiv:1304.2557 v3 · 2013-04-09 · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WHK3FMAKAFNMJTKQULHADCL4TZ}

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	2026-05-18T03:13:33.764290Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b1d5b2b00a015ac4cd50a2ce01897c9e4bd6853c4586caf4dd429acee1b8015f

Aliases

arxiv: 1304.2557 · arxiv_version: 1304.2557v3 · doi: 10.48550/arxiv.1304.2557 · pith_short_12: WHK3FMAKAFNM · pith_short_16: WHK3FMAKAFNMJTKQ · pith_short_8: WHK3FMAK

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/WHK3FMAKAFNMJTKQULHADCL4TZ \
  | 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: b1d5b2b00a015ac4cd50a2ce01897c9e4bd6853c4586caf4dd429acee1b8015f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f15c01fb140caa545093669f376c9548d96e75197b315fef94de24e6236a60c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2013-04-09T12:39:20Z",
    "title_canon_sha256": "a6e84edfd1b6a04ed5a226f2e23842afa0780fb7fd04acb995a495c9777ea6df"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.2557",
    "kind": "arxiv",
    "version": 3
  }
}