Pith Number

pith:Z2KTVKZC

pith:2022:Z2KTVKZCASEEWZZ4BTLEQEZ5KX

not attested not anchored not stored refs pending

An Algebraic Framework for Structured Epidemic Modeling

Andrew Baas, Evan Patterson, James Fairbanks, Micah Halter, Sophie Libkind

arxiv:2203.16345 v3 · 2022-02-28 · cs.PL · math.CT · 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{Z2KTVKZCASEEWZZ4BTLEQEZ5KX}

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	2026-07-05T05:05:32.442164Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ce953aab2204884b673c0cd648133d55f2d30ff47956b1392455c0ce6843ea10

Aliases

arxiv: 2203.16345 · arxiv_version: 2203.16345v3 · doi: 10.48550/arxiv.2203.16345 · pith_short_12: Z2KTVKZCASEE · pith_short_16: Z2KTVKZCASEEWZZ4 · pith_short_8: Z2KTVKZC

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/Z2KTVKZCASEEWZZ4BTLEQEZ5KX \
  | 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: ce953aab2204884b673c0cd648133d55f2d30ff47956b1392455c0ce6843ea10

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "968d4417c1e305f9482544cc814b1eef19c46d10dfb72db2f5ad4cd9ce760a0c",
    "cross_cats_sorted": [
      "math.CT",
      "q-bio.PE"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2022-02-28T17:44:55Z",
    "title_canon_sha256": "87603bc744bb0e51ee78f41c4b3d2f53611e2b3384a16e567d6a28092fbe0b94"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2203.16345",
    "kind": "arxiv",
    "version": 3
  }
}