Pith Number

pith:7IQ2BZ4Y

pith:2018:7IQ2BZ4Y7M4KS6SMEDYWRGDQPL

not attested not anchored not stored refs pending

Securing Behavior-based Opinion Spam Detection

Guixiang Ma, Philip S. Yu, Shuaijun Ge, Sihong Xie

arxiv:1811.03739 v1 · 2018-11-09 · cs.LG · cs.CR · 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{7IQ2BZ4Y7M4KS6SMEDYWRGDQPL}

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	2026-05-18T00:01:12.163460Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fa21a0e798fb38a97a4c20f16898707aef90ce567a3ea4faa6bfa9ac72d40eaf

Aliases

arxiv: 1811.03739 · arxiv_version: 1811.03739v1 · doi: 10.48550/arxiv.1811.03739 · pith_short_12: 7IQ2BZ4Y7M4K · pith_short_16: 7IQ2BZ4Y7M4KS6SM · pith_short_8: 7IQ2BZ4Y

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/7IQ2BZ4Y7M4KS6SMEDYWRGDQPL \
  | 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: fa21a0e798fb38a97a4c20f16898707aef90ce567a3ea4faa6bfa9ac72d40eaf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3d3e62769bea25ce127ba5ee6be9b49738a8b1b40d255967ebcf353a33a61a62",
    "cross_cats_sorted": [
      "cs.CR",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2018-11-09T02:09:31Z",
    "title_canon_sha256": "6d2d02b6dc37af9cdd3737f9d4325d574f55b85de8b8e06da5f9446b005fce5d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.03739",
    "kind": "arxiv",
    "version": 1
  }
}