Pith Number

pith:LUTR3VX5

pith:2020:LUTR3VX5GHJ4O3CZ2AUUZYYTLJ

not attested not anchored not stored refs pending

Modeling the early evolution of the COVID-19 in Brazil: results from a Susceptible-Infectious-Quarantined-Recovered (SIQR) model

Nuno Crokidakis

arxiv:2003.12150 v2 · 2020-03-26 · q-bio.PE · 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{LUTR3VX5GHJ4O3CZ2AUUZYYTLJ}

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.

Cited by

1 paper in Pith

The Importance of Encoder Choice:A Tabular-Image Study

Receipt and verification

First computed	2026-07-05T01:44:47.495233Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5d271dd6fd31d3c76c59d0294ce3135a4493b2f4d7180b9cc6b467b17ac193b5

Aliases

arxiv: 2003.12150 · arxiv_version: 2003.12150v2 · doi: 10.48550/arxiv.2003.12150 · pith_short_12: LUTR3VX5GHJ4 · pith_short_16: LUTR3VX5GHJ4O3CZ · pith_short_8: LUTR3VX5

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/LUTR3VX5GHJ4O3CZ2AUUZYYTLJ \
  | 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: 5d271dd6fd31d3c76c59d0294ce3135a4493b2f4d7180b9cc6b467b17ac193b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fafa1dc71c17d0f39cd233c050d05b89910c9ff439ca0b452d5b7fb05328c45b",
    "cross_cats_sorted": [
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2020-03-26T20:37:45Z",
    "title_canon_sha256": "661351d22c2dea777eaf0cf083a71bf7ce52dca48941d388628f25c096acea2a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2003.12150",
    "kind": "arxiv",
    "version": 2
  }
}