Pith Number

pith:DEMZESQI

pith:2020:DEMZESQIMKBMA7AZGSR7V6XTGN

not attested not anchored not stored refs pending

Optimal Combination of Arctic Sea Ice Extent Measures: A Dynamic Factor Modeling Approach

Boyuan Zhang, Francis X. Diebold, Glenn D. Rudebusch, Maximilian G\"obel, Philippe Goulet Coulombe

arxiv:2003.14276 v2 · 2020-03-31 · stat.AP · 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{DEMZESQIMKBMA7AZGSR7V6XTGN}

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	2026-07-05T01:26:51.273154Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1919924a086282c07c1934a3fafaf3337e5c52e4eaec5cd8263742e807eab010

Aliases

arxiv: 2003.14276 · arxiv_version: 2003.14276v2 · doi: 10.48550/arxiv.2003.14276 · pith_short_12: DEMZESQIMKBM · pith_short_16: DEMZESQIMKBMA7AZ · pith_short_8: DEMZESQI

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/DEMZESQIMKBMA7AZGSR7V6XTGN \
  | 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: 1919924a086282c07c1934a3fafaf3337e5c52e4eaec5cd8263742e807eab010

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8e12cca1ebe9e57e1feac9c4583f2c0093ed7d93b8964381de9ce52334f02e1c",
    "cross_cats_sorted": [
      "econ.EM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2020-03-31T15:02:27Z",
    "title_canon_sha256": "d17e7a697bd6878905274a57034bc3144b843b065c85d9cf60d4296d0eb0037c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2003.14276",
    "kind": "arxiv",
    "version": 2
  }
}