Pith Number

pith:XLT7FGL3

pith:2019:XLT7FGL3V7HPZ3R5X3DM5R3Y4H

not attested not anchored not stored refs pending

The influence of diversity on the measurement of functional impairment: An international validation of the Amsterdam IADL Questionnaire in 8 countries

Arturo X. Pereiro Rozas, Athene Lee, Bruno Dubois, Craig Ritchie, Cristina Lojo-Seoane, David Facal, Gemma Stringer, Gonzalo S\'anchez-Benavides, Hanna Jokinen, Iracema Leroi, Jos\'e Lu\'is Molinuevo, Laura J.E. Brown, Mark A. Dubbelman, Merike Verrijp, Philip Scheltens, Sietske A.M. Sikkes, Stelios Zygouris, St\'ephane Epelbaum, Stephen Salloway, Vuk Milosevic, Wiesje M. van der Flier

arxiv:1909.01915 v2 · 2019-09-04 · q-bio.NC · 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{XLT7FGL3V7HPZ3R5X3DM5R3Y4H}

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	2026-07-05T01:06:08.467265Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bae7f2997bafcefcee3dbec6cec778e1cba0b9ee6406671df77cc8a97ff51301

Aliases

arxiv: 1909.01915 · arxiv_version: 1909.01915v2 · doi: 10.48550/arxiv.1909.01915 · pith_short_12: XLT7FGL3V7HP · pith_short_16: XLT7FGL3V7HPZ3R5 · pith_short_8: XLT7FGL3

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/XLT7FGL3V7HPZ3R5X3DM5R3Y4H \
  | 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: bae7f2997bafcefcee3dbec6cec778e1cba0b9ee6406671df77cc8a97ff51301

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5249708028d086774f306dcc072881daa997afa6ee1610b41164b09621ca531b",
    "cross_cats_sorted": [
      "stat.AP"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "q-bio.NC",
    "submitted_at": "2019-09-04T16:08:14Z",
    "title_canon_sha256": "e4ccb61233ee34a21eb8323c9161a954d80b8c5e16d93ded5b521551a05874bb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.01915",
    "kind": "arxiv",
    "version": 2
  }
}