Pith Number

pith:QTFUMBGT

pith:2013:QTFUMBGTQUK5MDCEDBOCCKFR7A

not attested not anchored not stored refs pending

Declining trends of healthy life years expectancy (HLYE) in Europe

Ugo Bardi, Virginia Pierini

arxiv:1311.3799 v3 · 2013-11-15 · 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{QTFUMBGTQUK5MDCEDBOCCKFR7A}

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	2026-05-18T03:03:43.924794Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84cb4604d38515d60c44185c2128b1f82e4147f8b211b1b8ddbd879feaf717c0

Aliases

arxiv: 1311.3799 · arxiv_version: 1311.3799v3 · doi: 10.48550/arxiv.1311.3799 · pith_short_12: QTFUMBGTQUK5 · pith_short_16: QTFUMBGTQUK5MDCE · pith_short_8: QTFUMBGT

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/QTFUMBGTQUK5MDCEDBOCCKFR7A \
  | 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: 84cb4604d38515d60c44185c2128b1f82e4147f8b211b1b8ddbd879feaf717c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "25bb09c1221851e04e0d55017f0b539544437fc5856967fcad05fecdbf6c3de2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2013-11-15T10:33:19Z",
    "title_canon_sha256": "027e09c9ec05024b6d8d9d168c71f654670cec8b7bcb938a31b8cbd0743cce47"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.3799",
    "kind": "arxiv",
    "version": 3
  }
}