Pith Number

pith:UTKC7O6Y

pith:2017:UTKC7O6YL2DAJKF4KK6YFNGX2X

not attested not anchored not stored refs pending

Propensity score matching for multiple treatment levels: A CODA-based contribution

Hajime Seya, Takahiro Yoshida

arxiv:1710.08558 v1 · 2017-10-24 · 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{UTKC7O6YL2DAJKF4KK6YFNGX2X}

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	2026-05-18T00:32:15.651515Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a4d42fbbd85e8604a8bc52bd82b4d7d5f418e871da919615adb3fc1af559a6f0

Aliases

arxiv: 1710.08558 · arxiv_version: 1710.08558v1 · doi: 10.48550/arxiv.1710.08558 · pith_short_12: UTKC7O6YL2DA · pith_short_16: UTKC7O6YL2DAJKF4 · pith_short_8: UTKC7O6Y

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/UTKC7O6YL2DAJKF4KK6YFNGX2X \
  | 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: a4d42fbbd85e8604a8bc52bd82b4d7d5f418e871da919615adb3fc1af559a6f0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e87e344cb92e7fec67480f3339334db4b2d5bd2ebcf07fbb338b9e7dcae9f74d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "econ.EM",
    "submitted_at": "2017-10-24T00:27:47Z",
    "title_canon_sha256": "de16940e9088d1b0e23e885b04a1ea814364b60cb7be501fb142469e9f4dc85e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.08558",
    "kind": "arxiv",
    "version": 1
  }
}