Pith Number

pith:FW4QDXJQ

pith:2020:FW4QDXJQLUPUL2WBARWVC3RGRP

not attested not anchored not stored refs pending

COVID-19 in a social reinsurance framework: Forewarned is forearmed

C. Constantinescu, J. Eisenberg, J. Wang, K. Henshaw, M.C. Boado-Penas, M. Hu, S. Sahin, W. Zhu

arxiv:2004.04835 v1 · 2020-04-09 · 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{FW4QDXJQLUPUL2WBARWVC3RGRP}

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	2026-07-05T00:54:14.695567Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2db901dd305d1f45eac1046d516e268bdb89ab9b04f411e60a2bfe8b701aed73

Aliases

arxiv: 2004.04835 · arxiv_version: 2004.04835v1 · doi: 10.48550/arxiv.2004.04835 · pith_short_12: FW4QDXJQLUPU · pith_short_16: FW4QDXJQLUPUL2WB · pith_short_8: FW4QDXJQ

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/FW4QDXJQLUPUL2WBARWVC3RGRP \
  | 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: 2db901dd305d1f45eac1046d516e268bdb89ab9b04f411e60a2bfe8b701aed73

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a1c744c11ffdb7b0377594f4ae05f3a3054412c0e37ca5548d5eac27341af6f1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2020-04-09T22:23:30Z",
    "title_canon_sha256": "1915a0236e0343b8d087438dcdd7f13aac65af8407bc268faada3cd9ed71887a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.04835",
    "kind": "arxiv",
    "version": 1
  }
}