Pith Number

pith:PPTQ256J

pith:2011:PPTQ256JEAOHR7626WIUSVDXXF

not attested not anchored not stored refs pending

Mediation Analysis Without Sequential Ignorability: Using Baseline Covariates Interacted with Random Assignment as Instrumental Variables

Dylan S. Small

arxiv:1109.1070 v2 · 2011-09-06 · stat.ME

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PPTQ256JEAOHR7626WIUSVDXXF}

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	2026-05-18T03:37:41.722478Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7be70d77c9201c78ffdaf591495477b97508dd4c2cc952e51df5e485652a582f

Aliases

arxiv: 1109.1070 · arxiv_version: 1109.1070v2 · doi: 10.48550/arxiv.1109.1070 · pith_short_12: PPTQ256JEAOH · pith_short_16: PPTQ256JEAOHR762 · pith_short_8: PPTQ256J

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/PPTQ256JEAOHR7626WIUSVDXXF \
  | 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: 7be70d77c9201c78ffdaf591495477b97508dd4c2cc952e51df5e485652a582f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7aadbd365384a9a7078b1c928c7b46d21a87eac4dfebd271554182a36a2974c8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2011-09-06T05:49:02Z",
    "title_canon_sha256": "79cbc91899b39d861db870d2243ef95c17ec1d8e7926f06566cfd072925514ac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.1070",
    "kind": "arxiv",
    "version": 2
  }
}