Pith Number

pith:34ZFSZAX

pith:2018:34ZFSZAXI7KK3WPTDEVYKPNSQI

not attested not anchored not stored refs pending

Hierarchical Clustering better than Average-Linkage

Moses Charikar, Rad Niazadeh, Vaggos Chatziafratis

arxiv:1808.02227 v1 · 2018-08-07 · cs.DS · cs.GT · 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{34ZFSZAXI7KK3WPTDEVYKPNSQI}

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	2026-05-18T00:08:47.179524Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

df3259641747d4add9f3192b853db282100bd51f3064b800f44feda2165789d3

Aliases

arxiv: 1808.02227 · arxiv_version: 1808.02227v1 · doi: 10.48550/arxiv.1808.02227 · pith_short_12: 34ZFSZAXI7KK · pith_short_16: 34ZFSZAXI7KK3WPT · pith_short_8: 34ZFSZAX

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/34ZFSZAXI7KK3WPTDEVYKPNSQI \
  | 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: df3259641747d4add9f3192b853db282100bd51f3064b800f44feda2165789d3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0b3c0c00031984b486641de39e2a26d5af39499c9739a5c29400df9c2087f6b4",
    "cross_cats_sorted": [
      "cs.GT",
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-08-07T06:47:01Z",
    "title_canon_sha256": "11ac79055ea23ab3d70b750cce7db388c884b20a74ebed4a7242a5d5387ad1a9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.02227",
    "kind": "arxiv",
    "version": 1
  }
}