Pith Number

pith:FVOLLCXY

pith:2022:FVOLLCXY73Z4HLADBTPVRFC2TG

not attested not anchored not stored refs pending

Backcasting COVID-19: A Physics-Informed Estimate for Early Case Incidence

G.A. Kevrekidis, J. Cuevas-Maraver, M.A. Barmann, P.G. Kevrekidis, Q.Y. Chen, Y. Drossinos, Z. Rapti

arxiv:2202.00507 v1 · 2022-01-31 · q-bio.QM · physics.soc-ph · q-bio.PE

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FVOLLCXY73Z4HLADBTPVRFC2TG}

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	2026-07-05T03:53:22.754216Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d5cb58af8fef3c3ac030cdf58945a99b433403324d60c30e0777b59d1e95f37

Aliases

arxiv: 2202.00507 · arxiv_version: 2202.00507v1 · doi: 10.48550/arxiv.2202.00507 · pith_short_12: FVOLLCXY73Z4 · pith_short_16: FVOLLCXY73Z4HLAD · pith_short_8: FVOLLCXY

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/FVOLLCXY73Z4HLADBTPVRFC2TG \
  | 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: 2d5cb58af8fef3c3ac030cdf58945a99b433403324d60c30e0777b59d1e95f37

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b42629ae8c7aa9a78b4e58d6dc695014cfb7599a53984e7df6e2ab9d91f76153",
    "cross_cats_sorted": [
      "physics.soc-ph",
      "q-bio.PE"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "q-bio.QM",
    "submitted_at": "2022-01-31T04:19:58Z",
    "title_canon_sha256": "edfcee6f200947ef2e1c601b6e88b3a0abcffb80b00b74ada315db56207aaff1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2202.00507",
    "kind": "arxiv",
    "version": 1
  }
}