Pith Number

pith:5O7HZAJU

pith:2020:5O7HZAJUGGV3KIUOKTPQAKOKT6

not attested not anchored not stored refs pending

Predicting Skill Shortages in Labor Markets: A Machine Learning Approach

Benjamin Johnston, Marian-Andrei Rizoiu, Mary-Anne Williams, Nik Dawson

arxiv:2004.01311 v3 · 2020-04-03 · econ.GN · cs.CY · q-fin.EC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5O7HZAJUGGV3KIUOKTPQAKOKT6}

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	2026-07-05T02:12:41.006648Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ebbe7c813431abb5228e54df0029ca9fa5b25dbf2a280f479758f4377004b884

Aliases

arxiv: 2004.01311 · arxiv_version: 2004.01311v3 · doi: 10.48550/arxiv.2004.01311 · pith_short_12: 5O7HZAJUGGV3 · pith_short_16: 5O7HZAJUGGV3KIUO · pith_short_8: 5O7HZAJU

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/5O7HZAJUGGV3KIUOKTPQAKOKT6 \
  | 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: ebbe7c813431abb5228e54df0029ca9fa5b25dbf2a280f479758f4377004b884

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "64ea81c17d352401f1f2df90009cc7f2f292726450f2040a9826f2478945de33",
    "cross_cats_sorted": [
      "cs.CY",
      "q-fin.EC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "econ.GN",
    "submitted_at": "2020-04-03T00:15:10Z",
    "title_canon_sha256": "6c49905e6b3b741f505a87f3c9495ee3bf78a887feb528dd2ec08e8100d9be07"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.01311",
    "kind": "arxiv",
    "version": 3
  }
}