Pith Number

pith:FDGQDZS2

pith:2013:FDGQDZS2V46VKGMJKADM57FPWN

not attested not anchored not stored refs pending

Personalized Academic Research Paper Recommendation System

Jennifer G. Kim, Joonseok Lee, Kisung Lee

arxiv:1304.5457 v1 · 2013-04-19 · cs.IR · cs.DL · 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{FDGQDZS2V46VKGMJKADM57FPWN}

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	2026-05-18T03:27:33.455696Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28cd01e65aaf3d5519895006cefcafb371644ed6f01778c83020cb225db48ed4

Aliases

arxiv: 1304.5457 · arxiv_version: 1304.5457v1 · doi: 10.48550/arxiv.1304.5457 · pith_short_12: FDGQDZS2V46V · pith_short_16: FDGQDZS2V46VKGMJ · pith_short_8: FDGQDZS2

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/FDGQDZS2V46VKGMJKADM57FPWN \
  | 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: 28cd01e65aaf3d5519895006cefcafb371644ed6f01778c83020cb225db48ed4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bc03e37e3e52c32816113b7c52a537954a009f2527b492de40e5834a4cd854c4",
    "cross_cats_sorted": [
      "cs.DL",
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2013-04-19T15:53:53Z",
    "title_canon_sha256": "d99e099f2901d22c3713d3fe9a2c9be0850678c45313df9a4d02b3a0613b4fcf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.5457",
    "kind": "arxiv",
    "version": 1
  }
}