Pith Number

pith:OKQHA6VX

pith:2018:OKQHA6VXCWNLFPYSI7L7VC6DZ2

not attested not anchored not stored refs pending

Resource Mention Extraction for MOOC Discussion Forums

Liangming Pan, Min-Yen Kan, Qiang Dong, Ya-Hui An, Yan Fu

arxiv:1811.08853 v1 · 2018-11-21 · cs.CL · cs.AI · cs.DL · cs.IR · cs.SI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OKQHA6VXCWNLFPYSI7L7VC6DZ2}

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	2026-05-18T00:00:07.645323Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

72a0707ab7159ab2bf1247d7fa8bc3cea8e5000fdbf515aaa2044deb475599c1

Aliases

arxiv: 1811.08853 · arxiv_version: 1811.08853v1 · doi: 10.48550/arxiv.1811.08853 · pith_short_12: OKQHA6VXCWNL · pith_short_16: OKQHA6VXCWNLFPYS · pith_short_8: OKQHA6VX

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/OKQHA6VXCWNLFPYSI7L7VC6DZ2 \
  | 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: 72a0707ab7159ab2bf1247d7fa8bc3cea8e5000fdbf515aaa2044deb475599c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ba2e72751b3c25de21bd0bec8caeab6b19b4554cc7188288477d7720be2ada82",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.DL",
      "cs.IR",
      "cs.SI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2018-11-21T17:59:56Z",
    "title_canon_sha256": "1f09b19e81e8de32776b46c69bf267825a3665750377933804f50ca95900fd7c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.08853",
    "kind": "arxiv",
    "version": 1
  }
}