Pith Number

pith:P7ZZQPBI

pith:2015:P7ZZQPBIM2YOXSLNQNKKGLCFWL

not attested not anchored not stored refs pending

Assessing the Potential Impact of a Nationwide Class-Based Affirmative Action System

Alice Xiang, Donald B. Rubin

arxiv:1509.03397 v1 · 2015-09-11 · 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{P7ZZQPBIM2YOXSLNQNKKGLCFWL}

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	2026-05-18T01:33:23.384486Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ff3983c2866b0ebc96d8354a32c45b2cf69bb50172c756c8127b852ffe66fc1

Aliases

arxiv: 1509.03397 · arxiv_version: 1509.03397v1 · doi: 10.48550/arxiv.1509.03397 · pith_short_12: P7ZZQPBIM2YO · pith_short_16: P7ZZQPBIM2YOXSLN · pith_short_8: P7ZZQPBI

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/P7ZZQPBIM2YOXSLNQNKKGLCFWL \
  | 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: 7ff3983c2866b0ebc96d8354a32c45b2cf69bb50172c756c8127b852ffe66fc1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3a25ec02698f93d392bb7c1f3754eac7f2681f826c26e25f1d118cdba98e1d5c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2015-09-11T06:49:00Z",
    "title_canon_sha256": "dfc5c9084a8b8ff2a23ef1c3e62abde19c9f1e55e7663ea687eb4de11ffba39b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.03397",
    "kind": "arxiv",
    "version": 1
  }
}