Pith Number

pith:CZMIG5OA

pith:2020:CZMIG5OAYJ2KF3OFNRMEYY3GFL

not attested not anchored not stored refs pending

Estimating required 'lockdown' cycles before immunity to SARS-CoV-2: Model-based analyses of susceptible population sizes, 'S0', in seven European countries including the UK and Ireland

Erik D. Fagerholm, Federico Turkheimer, Jean Daunizeau, Karl J. Friston, Maell Cullen, Mark P. Richardson, Rob Leech, Rosalyn J. Moran, Steven Williams

arxiv:2004.05060 v1 · 2020-04-09 · 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{CZMIG5OAYJ2KF3OFNRMEYY3GFL}

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	2026-07-05T00:54:25.032254Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

16588375c0c274a2edc56c584c63662adca6c1dda54dbe240e7a62309c83e95b

Aliases

arxiv: 2004.05060 · arxiv_version: 2004.05060v1 · doi: 10.48550/arxiv.2004.05060 · pith_short_12: CZMIG5OAYJ2K · pith_short_16: CZMIG5OAYJ2KF3OF · pith_short_8: CZMIG5OA

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/CZMIG5OAYJ2KF3OFNRMEYY3GFL \
  | 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: 16588375c0c274a2edc56c584c63662adca6c1dda54dbe240e7a62309c83e95b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0f94202b76f485d6a777e88a2101ec153c05aa389bbb3246062d14e5f6478b50",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2020-04-09T16:59:04Z",
    "title_canon_sha256": "55e3d267d96a0b0481b98c8260a8745200c5cd4d6e7b80b4741e897d8533e589"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.05060",
    "kind": "arxiv",
    "version": 1
  }
}