Pith Number

pith:3V2I7DC4

pith:2022:3V2I7DC4EWWMRL46C45GAKBVWW

not attested not anchored not stored refs pending

Tuning-parameter-free optimal propensity score matching approach for causal inference

Jing Qin, Yukun Liu

arxiv:2205.13200 v1 · 2022-05-26 · 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{3V2I7DC4EWWMRL46C45GAKBVWW}

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	2026-07-05T04:26:40.885902Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dd748f8c5c25acc8af9e173a602835b5a98639dca1dc704bcd1275268d035fe7

Aliases

arxiv: 2205.13200 · arxiv_version: 2205.13200v1 · doi: 10.48550/arxiv.2205.13200 · pith_short_12: 3V2I7DC4EWWM · pith_short_16: 3V2I7DC4EWWMRL46 · pith_short_8: 3V2I7DC4

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/3V2I7DC4EWWMRL46C45GAKBVWW \
  | 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: dd748f8c5c25acc8af9e173a602835b5a98639dca1dc704bcd1275268d035fe7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "32598d515e7cb4016e4573b6fc0339d0385983f19f441fab9ade93186160a2fa",
    "cross_cats_sorted": [
      "stat.TH"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2022-05-26T07:33:44Z",
    "title_canon_sha256": "8233c50eb1c12d8fb9edaec308f4fa0dfe196440ec11b984cf346a7869828440"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2205.13200",
    "kind": "arxiv",
    "version": 1
  }
}