Pith Number

pith:ZCSPEL5P

pith:2009:ZCSPEL5PG2MEGL63SGVHQTNPCX

not attested not anchored not stored refs pending

Early Real-time Estimation of Infectious Disease Reproduction Number

Babak Pourbohloul, Bahman Davoudi, David J. D. Earn, Joel Miller, Lauren Ancel Meyers, Rafael Meza

arxiv:0905.0728 v3 · 2009-05-06 · q-bio.QM · physics.soc-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZCSPEL5PG2MEGL63SGVHQTNPCX}

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	2026-05-18T03:22:28.528947Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c8a4f22faf3698432fdb91aa784daf15ec34f78f7542c878c2509a74708c8cd7

Aliases

arxiv: 0905.0728 · arxiv_version: 0905.0728v3 · doi: 10.48550/arxiv.0905.0728 · pith_short_12: ZCSPEL5PG2ME · pith_short_16: ZCSPEL5PG2MEGL63 · pith_short_8: ZCSPEL5P

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/ZCSPEL5PG2MEGL63SGVHQTNPCX \
  | 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: c8a4f22faf3698432fdb91aa784daf15ec34f78f7542c878c2509a74708c8cd7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "75ed2216ac785fce8c9170b32b28c13edc7d34ff7ed9fb443649be71b8316af7",
    "cross_cats_sorted": [
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.QM",
    "submitted_at": "2009-05-06T01:31:51Z",
    "title_canon_sha256": "62fb73604159046393c2a8fddfbd9ecbbe5d94a5e99c28b73e5ab5a33ff2ce02"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.0728",
    "kind": "arxiv",
    "version": 3
  }
}