Pith Number

pith:XSPXRF7B

pith:2019:XSPXRF7B6XM7B66K7JCNKDMWAE

not attested not anchored not stored refs pending

Testing nonparametric shape restrictions

Javier Hidalgo, Tatiana Komarova

arxiv:1909.01675 v2 · 2019-09-04 · stat.ME · econ.EM · math.ST · stat.TH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XSPXRF7B6XM7B66K7JCNKDMWAE}

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	2026-07-05T01:08:24.627494Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc9f7897e1f5d9f0fbcafa44d50d96013f176b818be6a7e1a1bc8e59df860ddb

Aliases

arxiv: 1909.01675 · arxiv_version: 1909.01675v2 · doi: 10.48550/arxiv.1909.01675 · pith_short_12: XSPXRF7B6XM7 · pith_short_16: XSPXRF7B6XM7B66K · pith_short_8: XSPXRF7B

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/XSPXRF7B6XM7B66K7JCNKDMWAE \
  | 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: bc9f7897e1f5d9f0fbcafa44d50d96013f176b818be6a7e1a1bc8e59df860ddb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "61bd9693ccc91088b99146754fbfcacdbcb53e83fe9842fc408e9ac216dcb82c",
    "cross_cats_sorted": [
      "econ.EM",
      "math.ST",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2019-09-04T10:13:14Z",
    "title_canon_sha256": "dc4cbdda5e7e96ba65212245a75b01022cc54d473fb5540dc16218af33ad3a7f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.01675",
    "kind": "arxiv",
    "version": 2
  }
}