Pith Number

pith:CLGXQ2SL

pith:2019:CLGXQ2SLCURTYM227UVLT5VNA3

not attested not anchored not stored refs pending

Tracing Forum Posts to MOOC Content using Topic Analysis

Abram Hindle, Alexander William Wong, Ken Wong

arxiv:1904.07307 v1 · 2019-04-15 · cs.IR · cs.CL · cs.CY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CLGXQ2SLCURTYM227UVLT5VNA3}

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	2026-05-17T23:48:29.002012Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

12cd786a4b15233c335afd2ab9f6ad06d11e01348534e7db7ee712d6ff027df6

Aliases

arxiv: 1904.07307 · arxiv_version: 1904.07307v1 · doi: 10.48550/arxiv.1904.07307 · pith_short_12: CLGXQ2SLCURT · pith_short_16: CLGXQ2SLCURTYM22 · pith_short_8: CLGXQ2SL

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/CLGXQ2SLCURTYM227UVLT5VNA3 \
  | 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: 12cd786a4b15233c335afd2ab9f6ad06d11e01348534e7db7ee712d6ff027df6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "42a20af7a40fec97e97495d0defaad6d1748dc9c1b1b5c84bec9701be2338186",
    "cross_cats_sorted": [
      "cs.CL",
      "cs.CY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2019-04-15T19:49:06Z",
    "title_canon_sha256": "7b30714fbaf201d4a184a2820e9006ab6006ad3be306cd146a1fb73150995f7c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.07307",
    "kind": "arxiv",
    "version": 1
  }
}