Pith Number

pith:4X7WYQTC

pith:2012:4X7WYQTC4R2ITXHCYPG5PQ45Q5

not attested not anchored not stored refs pending

An effective web document clustering for information retrieval

R.K. Roul, S.K. Sahay

arxiv:1211.1107 v1 · 2012-11-06 · cs.IR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4X7WYQTC4R2ITXHCYPG5PQ45Q5}

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	2026-05-18T03:41:22.292298Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5ff6c4262e47489dce2c3cdd7c39d8767f740dbd307d7fe2fcdda9bd27bb434

Aliases

arxiv: 1211.1107 · arxiv_version: 1211.1107v1 · doi: 10.48550/arxiv.1211.1107 · pith_short_12: 4X7WYQTC4R2I · pith_short_16: 4X7WYQTC4R2ITXHC · pith_short_8: 4X7WYQTC

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/4X7WYQTC4R2ITXHCYPG5PQ45Q5 \
  | 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: e5ff6c4262e47489dce2c3cdd7c39d8767f740dbd307d7fe2fcdda9bd27bb434

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8400bdfa3f6ae2766944a258b8596218fdb914670a836ab1bbe3af0f7aa1aa2d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2012-11-06T04:39:30Z",
    "title_canon_sha256": "0198f33480d71c86e5ef151988cdbcbe09cc5bf5175d879d796b5542d27ab1d9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.1107",
    "kind": "arxiv",
    "version": 1
  }
}