Pith Number

pith:2F4STBCE

pith:2012:2F4STBCEGKUDF3XSEOF7DV5NYY

not attested not anchored not stored refs pending

Spreaders in the Network SIR Model: An Empirical Study

Brian Macdonald, Geoffrey Moores, Nicholas Howard, Paulo Shakarian

arxiv:1208.4269 v2 · 2012-08-21 · cs.SI · 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{2F4STBCEGKUDF3XSEOF7DV5NYY}

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	2026-05-18T03:48:14.443425Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d17929844432a832eef2238bf1d7adc63f495160500472dfa47c93b6fa57f515

Aliases

arxiv: 1208.4269 · arxiv_version: 1208.4269v2 · doi: 10.48550/arxiv.1208.4269 · pith_short_12: 2F4STBCEGKUD · pith_short_16: 2F4STBCEGKUDF3XS · pith_short_8: 2F4STBCE

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/2F4STBCEGKUDF3XSEOF7DV5NYY \
  | 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: d17929844432a832eef2238bf1d7adc63f495160500472dfa47c93b6fa57f515

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c6575fce8bb5883487383e39d92bb519e47dbf0b89e070a4c8c3a5506c204647",
    "cross_cats_sorted": [
      "physics.soc-ph"
    ],
    "license": "http://creativecommons.org/licenses/publicdomain/",
    "primary_cat": "cs.SI",
    "submitted_at": "2012-08-21T14:00:07Z",
    "title_canon_sha256": "08cefbfe8473c1fb8fba71a37bd7ea3fe5855d415a7fceb1c9fe59cd1203be70"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.4269",
    "kind": "arxiv",
    "version": 2
  }
}