Pith Number

pith:7GZP63DS

pith:2025:7GZP63DSX6PFE6GDL3C2DK4EVR

not attested not anchored not stored refs pending

Nonparametric "rich covariates" without saturation

Federico Martellosio, J.M.C. Santos Silva, Ludgero Glorias

arxiv:2505.21213 v2 · 2025-05-27 · 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{7GZP63DSX6PFE6GDL3C2DK4EVR}

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	2026-07-05T11:41:42.222631Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9b2ff6c72bf9e5278c35ec5a1ab84ac7005d00c46adbade8d87a91721a7017e

Aliases

arxiv: 2505.21213 · arxiv_version: 2505.21213v2 · doi: 10.48550/arxiv.2505.21213 · pith_short_12: 7GZP63DSX6PF · pith_short_16: 7GZP63DSX6PFE6GD · pith_short_8: 7GZP63DS

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/7GZP63DSX6PFE6GDL3C2DK4EVR \
  | 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: f9b2ff6c72bf9e5278c35ec5a1ab84ac7005d00c46adbade8d87a91721a7017e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cacf14a926895bb5585f246d95114a535790a0c036a19dbd033393eb94a3e538",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "econ.EM",
    "submitted_at": "2025-05-27T14:02:37Z",
    "title_canon_sha256": "f8dfaed913bf6d0d45a6f3f541cc48d3d55736967868ec19c0d1830c85b78f78"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.21213",
    "kind": "arxiv",
    "version": 2
  }
}