Pith Number

pith:GULQQQ6B

pith:2020:GULQQQ6BRVH6WS4YOME3URHWAP

not attested not anchored not stored refs pending

Inference in Unbalanced Panel Data Models with Interactive Fixed Effects

Amrei Stammann, Daniel Czarnowske

arxiv:2004.03414 v4 · 2020-04-07 · 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{GULQQQ6BRVH6WS4YOME3URHWAP}

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	2026-05-20T00:04:02.882952Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

35170843c18d4feb4b987309ba44f603de0972b39f8b4f771c73f53bced77616

Aliases

arxiv: 2004.03414 · arxiv_version: 2004.03414v4 · doi: 10.48550/arxiv.2004.03414 · pith_short_12: GULQQQ6BRVH6 · pith_short_16: GULQQQ6BRVH6WS4Y · pith_short_8: GULQQQ6B

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/GULQQQ6BRVH6WS4YOME3URHWAP \
  | 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: 35170843c18d4feb4b987309ba44f603de0972b39f8b4f771c73f53bced77616

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "648f67afadd50a26fab14114ba12524538df4a7e6a3e3668eefcd2b4299df93e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "econ.EM",
    "submitted_at": "2020-04-07T14:06:25Z",
    "title_canon_sha256": "88b738a4be074b48d14f8dd84b90a28b113e9dd973c54148ceca292308ae1aac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.03414",
    "kind": "arxiv",
    "version": 4
  }
}