Pith Number

pith:P2MBEKVB

pith:2021:P2MBEKVBTDIL655IKNXQLGOOMK

not attested not anchored not stored refs pending

Extracting Variable-Depth Logical Document Hierarchy from Long Documents: Method, Evaluation, and Application

Ganbin Zhou, Ping Luo, Rongyu Cao, Yixuan Cao

arxiv:2105.09297 v1 · 2021-05-14 · cs.IR · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{P2MBEKVBTDIL655IKNXQLGOOMK}

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	2026-07-05T02:41:51.660232Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e98122aa198d0bf77a8536f0599ce62b56bf88c72df5f25872d943dd23c4ead

Aliases

arxiv: 2105.09297 · arxiv_version: 2105.09297v1 · doi: 10.48550/arxiv.2105.09297 · pith_short_12: P2MBEKVBTDIL · pith_short_16: P2MBEKVBTDIL655I · pith_short_8: P2MBEKVB

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/P2MBEKVBTDIL655IKNXQLGOOMK \
  | 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: 7e98122aa198d0bf77a8536f0599ce62b56bf88c72df5f25872d943dd23c4ead

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1952a347f729d478e806d08abb56378656ec53aa4ce2360df5e4e5f2b9936bd6",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2021-05-14T06:26:22Z",
    "title_canon_sha256": "910eae2f01e459d8c8e3bd7009b1330ba54c07c7876f6046f7f70c9e251e7888"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.09297",
    "kind": "arxiv",
    "version": 1
  }
}