Pith Number

pith:ORKFWSFT

pith:2013:ORKFWSFTHWRVQBC7SYGPW6QOBK

not attested not anchored not stored refs pending

Learning to Rank for Expert Search in Digital Libraries of Academic Publications

Bruno Martins, Catarina Moreira, P\'avel Calado

arxiv:1302.0413 v1 · 2013-02-02 · cs.IR · 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{ORKFWSFTHWRVQBC7SYGPW6QOBK}

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	2026-05-18T03:34:37.205401Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

74545b48b33da358045f960cfb7a0e0ab42b71b497dee7320b87db658c75b6c1

Aliases

arxiv: 1302.0413 · arxiv_version: 1302.0413v1 · doi: 10.48550/arxiv.1302.0413 · pith_short_12: ORKFWSFTHWRV · pith_short_16: ORKFWSFTHWRVQBC7 · pith_short_8: ORKFWSFT

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/ORKFWSFTHWRVQBC7SYGPW6QOBK \
  | 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: 74545b48b33da358045f960cfb7a0e0ab42b71b497dee7320b87db658c75b6c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "936c18ac753989ccdf3bff1c6e075cabf3b71a57f5f15a0067a2a59d4fd0f3e3",
    "cross_cats_sorted": [
      "cs.DL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2013-02-02T18:36:08Z",
    "title_canon_sha256": "33432bf11b643cb1dca3f9e0d73ca57d81deaf3e37e0fd4b3ed4d234c564af37"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.0413",
    "kind": "arxiv",
    "version": 1
  }
}