Pith Number

pith:6GUTP2EN

pith:2021:6GUTP2ENUTNT7KFYYOLYP2GEMF

not attested not anchored not stored refs pending

A stochastic metapopulation state-space approach to modeling and estimating Covid-19 spread

Durward Cator III, Martial Ndeffo-Mbah, Ulisses Braga-Neto, Yukun Tan

arxiv:2106.07919 v1 · 2021-06-15 · eess.SP · cs.SI · 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{6GUTP2ENUTNT7KFYYOLYP2GEMF}

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	2026-07-05T02:49:35.538101Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f1a937e88da4db3fa8b8c39787e8c46142caa3c3ad2e5694dbd5d456c2494855

Aliases

arxiv: 2106.07919 · arxiv_version: 2106.07919v1 · doi: 10.48550/arxiv.2106.07919 · pith_short_12: 6GUTP2ENUTNT · pith_short_16: 6GUTP2ENUTNT7KFY · pith_short_8: 6GUTP2EN

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/6GUTP2ENUTNT7KFYYOLYP2GEMF \
  | 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: f1a937e88da4db3fa8b8c39787e8c46142caa3c3ad2e5694dbd5d456c2494855

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "89b4d91c60938437648c3ed5c8277d291d3ab6b2dd4158102035ee336d3bb879",
    "cross_cats_sorted": [
      "cs.SI",
      "q-bio.PE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2021-06-15T07:09:38Z",
    "title_canon_sha256": "6ced97d1ce6a232618e3207f71e6ddd5909688c5fdd6b95767c3b0e2d87f4df4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2106.07919",
    "kind": "arxiv",
    "version": 1
  }
}