Pith Number

pith:JPKZ57SL

pith:2026:JPKZ57SLDQXN2EA6TP62GDAOMG

not attested not anchored not stored refs pending

Testing Heteroskedasticity Under Measurement Error

Jichao Yuan, Xiaojun Song

arxiv:2605.20012 v1 · 2026-05-19 · 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{JPKZ57SLDQXN2EA6TP62GDAOMG}

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	2026-05-20T02:05:58.865945Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4bd59efe4b1c2edd101e9bfda30c0e61b39262f6fac46367a20b26aa3c1bb4d8

Aliases

arxiv: 2605.20012 · arxiv_version: 2605.20012v1 · doi: 10.48550/arxiv.2605.20012 · pith_short_12: JPKZ57SLDQXN · pith_short_16: JPKZ57SLDQXN2EA6 · pith_short_8: JPKZ57SL

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/JPKZ57SLDQXN2EA6TP62GDAOMG \
  | 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: 4bd59efe4b1c2edd101e9bfda30c0e61b39262f6fac46367a20b26aa3c1bb4d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9bc67f7ce48230b9cc8b7ae9c3679e9c5ca9d13852c80bb9c117d251ef227d69",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "econ.EM",
    "submitted_at": "2026-05-19T15:41:32Z",
    "title_canon_sha256": "ae448a8d63a5c2e1d9dd39d06e8a2674b775b0f3fc06f656664a9e9706df6492"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.20012",
    "kind": "arxiv",
    "version": 1
  }
}