Pith Number

pith:L2JL337R

pith:2009:L2JL337RHBGH34H5NVADGYXZXI

not attested not anchored not stored refs pending

Concept-based Recommendations for Internet Advertisement

Dmitry I. Ignatov, Sergei O. Kuznetsov

arxiv:0906.4982 v1 · 2009-06-26 · cs.AI · cs.CY · cs.IR · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{L2JL337RHBGH34H5NVADGYXZXI}

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	2026-05-18T03:05:55.480622Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5e92bdeff1384c7df0fd6d403362f9ba361c83fd0207d939eb186b4a0833b912

Aliases

arxiv: 0906.4982 · arxiv_version: 0906.4982v1 · doi: 10.48550/arxiv.0906.4982 · pith_short_12: L2JL337RHBGH · pith_short_16: L2JL337RHBGH34H5 · pith_short_8: L2JL337R

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/L2JL337RHBGH34H5NVADGYXZXI \
  | 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: 5e92bdeff1384c7df0fd6d403362f9ba361c83fd0207d939eb186b4a0833b912

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9bc87793dc2b4aa4e38f0030223191a310a9ce200a4d83369f045d3e2712d059",
    "cross_cats_sorted": [
      "cs.CY",
      "cs.IR",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2009-06-26T17:26:05Z",
    "title_canon_sha256": "48f280118036a495b48e44fa10a2f5a8afee3fcd60a8b82b5fcff98a76a844e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.4982",
    "kind": "arxiv",
    "version": 1
  }
}