Pith Number

pith:ZUFLHRLU

pith:2017:ZUFLHRLU2CN7WGWGH67KGQU7SV

not attested not anchored not stored refs pending

Clustering articles based on semantic similarity

Rob Koopman, Shenghui Wang

arxiv:1702.04946 v1 · 2017-02-16 · cs.DL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZUFLHRLU2CN7WGWGH67KGQU7SV}

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	2026-05-18T00:50:36.668657Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cd0ab3c574d09bfb1ac63fbea3429f95720d872376796f43a90b44fdd1a183ce

Aliases

arxiv: 1702.04946 · arxiv_version: 1702.04946v1 · doi: 10.48550/arxiv.1702.04946 · pith_short_12: ZUFLHRLU2CN7 · pith_short_16: ZUFLHRLU2CN7WGWG · pith_short_8: ZUFLHRLU

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/ZUFLHRLU2CN7WGWGH67KGQU7SV \
  | 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: cd0ab3c574d09bfb1ac63fbea3429f95720d872376796f43a90b44fdd1a183ce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b6ecdbf7c59bb94ae5e277ed71666ca44145a22fbdb3d337df0a96bdf8844128",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DL",
    "submitted_at": "2017-02-16T12:48:54Z",
    "title_canon_sha256": "84a8021e159fa18f6e3e7aedd08f8c044b1799540bfdaeb63dfa465a7fdfc8f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.04946",
    "kind": "arxiv",
    "version": 1
  }
}