Pith Number

pith:Y3B5IAZV

pith:2021:Y3B5IAZVNC2FCLJCZR4HDQGFPV

not attested not anchored not stored refs pending

ELSKE: Efficient Large-Scale Keyphrase Extraction

Johannes Knittel, Steffen Koch, Thomas Ertl

arxiv:2102.05700 v1 · 2021-02-10 · 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{Y3B5IAZVNC2FCLJCZR4HDQGFPV}

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	2026-07-05T03:14:33.392704Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6c3d4033568b4512d22cc7871c0c57d77312770bb6ab6d20ad50e142087c87a

Aliases

arxiv: 2102.05700 · arxiv_version: 2102.05700v1 · doi: 10.48550/arxiv.2102.05700 · pith_short_12: Y3B5IAZVNC2F · pith_short_16: Y3B5IAZVNC2FCLJC · pith_short_8: Y3B5IAZV

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/Y3B5IAZVNC2FCLJCZR4HDQGFPV \
  | 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: c6c3d4033568b4512d22cc7871c0c57d77312770bb6ab6d20ad50e142087c87a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "142a9e2ebe5515ebb45545dc1264382478d178d03008987cabde84cff284eeb3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2021-02-10T19:14:01Z",
    "title_canon_sha256": "76095aba7db6af38d5f00d3f46ca2ccf61c50224b2ba89ebcf3a89855bdad064"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.05700",
    "kind": "arxiv",
    "version": 1
  }
}