Pith Number

pith:Z7UMAUJJ

pith:2019:Z7UMAUJJANUZQ7TOAYQ4GCNXJL

not attested not anchored not stored refs pending

Learned Sectors: A fundamentals-driven sector reclassification project

Rukmal Weerawarana, Yiyi Zhu, Yuzhen He

arxiv:1906.03935 v1 · 2019-05-31 · q-fin.GN · econ.EM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Z7UMAUJJANUZQ7TOAYQ4GCNXJL}

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	2026-05-17T23:43:44.489997Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cfe8c051290369987e6e0621c309b74add2b4937bcdcab4ec3224ad9cb30a77b

Aliases

arxiv: 1906.03935 · arxiv_version: 1906.03935v1 · doi: 10.48550/arxiv.1906.03935 · pith_short_12: Z7UMAUJJANUZ · pith_short_16: Z7UMAUJJANUZQ7TO · pith_short_8: Z7UMAUJJ

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/Z7UMAUJJANUZQ7TOAYQ4GCNXJL \
  | 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: cfe8c051290369987e6e0621c309b74add2b4937bcdcab4ec3224ad9cb30a77b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "867536ff8c5f45788deef91a7461015a04fbc196d8954bf69b6651700d250c2b",
    "cross_cats_sorted": [
      "econ.EM"
    ],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "q-fin.GN",
    "submitted_at": "2019-05-31T02:13:00Z",
    "title_canon_sha256": "ea892be4400931c4b5a93bc758fb79ccba33b6dc4802362cf19c313c4ae28d9e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.03935",
    "kind": "arxiv",
    "version": 1
  }
}