Pith Number

pith:LOJHAPLG

pith:2017:LOJHAPLGKX7TKDL2KXNR5DAOT5

not attested not anchored not stored refs pending

The LOOP Estimator: Adjusting for Covariates in Randomized Experiments

Edward Wu, Johann Gagnon-Bartsch

arxiv:1708.01229 v1 · 2017-08-03 · stat.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LOJHAPLGKX7TKDL2KXNR5DAOT5}

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	2026-05-18T00:38:40.319404Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5b92703d6655ff350d7a55db1e8c0e9f644cb28b400f88e063278076c9bf3717

Aliases

arxiv: 1708.01229 · arxiv_version: 1708.01229v1 · doi: 10.48550/arxiv.1708.01229 · pith_short_12: LOJHAPLGKX7T · pith_short_16: LOJHAPLGKX7TKDL2 · pith_short_8: LOJHAPLG

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/LOJHAPLGKX7TKDL2KXNR5DAOT5 \
  | 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: 5b92703d6655ff350d7a55db1e8c0e9f644cb28b400f88e063278076c9bf3717

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "63ae4b9c9997dafe147298111b0c7fedc6ad628fe5e5fd3e4b84584e977008c3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2017-08-03T17:20:52Z",
    "title_canon_sha256": "9a3ed7434beebcb91d053b3a45a5ccba4740f0730dbd56bec7efa8ffd4d7d727"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.01229",
    "kind": "arxiv",
    "version": 1
  }
}