Pith Number

pith:C4F7DF5A

pith:2019:C4F7DF5AO7JMBNIZAKRX34JYHZ

not attested not anchored not stored refs pending

Analysis of Ward's Method

Anna Gro{\ss}wendt, Heiko R\"oglin, Melanie Schmidt

arxiv:1907.05094 v1 · 2019-07-11 · cs.DS · cs.CG · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{C4F7DF5AO7JMBNIZAKRX34JYHZ}

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	2026-05-17T23:40:53.957230Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

170bf197a077d2c0b51902a37df1383e40f5359d51fed52cabdc1e0394675860

Aliases

arxiv: 1907.05094 · arxiv_version: 1907.05094v1 · doi: 10.48550/arxiv.1907.05094 · pith_short_12: C4F7DF5AO7JM · pith_short_16: C4F7DF5AO7JMBNIZ · pith_short_8: C4F7DF5A

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/C4F7DF5AO7JMBNIZAKRX34JYHZ \
  | 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: 170bf197a077d2c0b51902a37df1383e40f5359d51fed52cabdc1e0394675860

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ce7148ff00b18ad1e0fd662a255d270dc667974b815e1ff42fa1cba604c86b39",
    "cross_cats_sorted": [
      "cs.CG",
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2019-07-11T10:35:03Z",
    "title_canon_sha256": "af08700018cd26d53832eca7e7ea2272e1fb8fafe87ea6d24dcb3c830bde5f4b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.05094",
    "kind": "arxiv",
    "version": 1
  }
}