Pith Number

pith:7K3MCBBF

pith:2012:7K3MCBBFCYYB6WZ4SDAKMHMYUD

not attested not anchored not stored refs pending

Leveraging Subjective Human Annotation for Clustering Historic Newspaper Articles

Austin Lee, Axinia Radeva, Barbara Taranto, Boyi Xie, Deepak Shankargouda, Haimonti Dutta, Kyle Rego, Manoj Pooleery, Rebecca Passonneau, William Chan

arxiv:1208.3530 v1 · 2012-08-17 · cs.IR · cs.CL · cs.DL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7K3MCBBFCYYB6WZ4SDAKMHMYUD}

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	2026-05-18T03:48:35.012142Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fab6c1042516301f5b3c90c0a61d98a0c16a66fc91c23c8cace42787284b29b5

Aliases

arxiv: 1208.3530 · arxiv_version: 1208.3530v1 · doi: 10.48550/arxiv.1208.3530 · pith_short_12: 7K3MCBBFCYYB · pith_short_16: 7K3MCBBFCYYB6WZ4 · pith_short_8: 7K3MCBBF

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/7K3MCBBFCYYB6WZ4SDAKMHMYUD \
  | 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: fab6c1042516301f5b3c90c0a61d98a0c16a66fc91c23c8cace42787284b29b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9936eb70f36e5224aefd6eb44e558987e7422f1925a7dbec4b594e872f94f6d9",
    "cross_cats_sorted": [
      "cs.CL",
      "cs.DL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2012-08-17T04:48:58Z",
    "title_canon_sha256": "6dffb40af2ffb54e6145722ec02a6e4c85e9ec8a096db534b393ec2135e3c489"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.3530",
    "kind": "arxiv",
    "version": 1
  }
}