Pith Number

pith:ET3ICN5E

pith:2011:ET3ICN5ELU4CDL6HURSDYPRAWK

not attested not anchored not stored refs pending

Close encounters in a pediatric ward: measuring face-to-face proximity and mixing patterns with wearable sensors

A. Barrat, A.E. Tozzi, C. Cattuto, C. Rizzo, E. Pandolfi, F. Gesualdo, L. Isella, L. Rav\`a, M. Romano, V. Colizza, W. Van den Broeck

arxiv:1104.2515 v1 · 2011-04-13 · q-bio.QM · cs.HC

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ET3ICN5ELU4CDL6HURSDYPRAWK}

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	2026-05-18T04:24:34.694817Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

24f68137a45d3821afc7a4643c3e20b2a99a284a487a7181fa1b377ca13d692d

Aliases

arxiv: 1104.2515 · arxiv_version: 1104.2515v1 · doi: 10.48550/arxiv.1104.2515 · pith_short_12: ET3ICN5ELU4C · pith_short_16: ET3ICN5ELU4CDL6H · pith_short_8: ET3ICN5E

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/ET3ICN5ELU4CDL6HURSDYPRAWK \
  | 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: 24f68137a45d3821afc7a4643c3e20b2a99a284a487a7181fa1b377ca13d692d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f7006c3aee386267f048f96ae1629f14d27c1c8ae3732616bba4f7346141fbed",
    "cross_cats_sorted": [
      "cs.HC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.QM",
    "submitted_at": "2011-04-13T14:42:48Z",
    "title_canon_sha256": "754333a4a0a63a575734bd935475ea84aa0240f7acbc5157dab729c25b434a6d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.2515",
    "kind": "arxiv",
    "version": 1
  }
}