Pith Number

pith:RY75RN2I

pith:2015:RY75RN2IDKUUV7TISROZRUGMIJ

not attested not anchored not stored refs pending

Predicting Ambulance Demand: a Spatio-Temporal Kernel Approach

David S. Matteson, Zhengyi Zhou

arxiv:1507.00364 v1 · 2015-07-01 · stat.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RY75RN2IDKUUV7TISROZRUGMIJ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T01:37:26.813492Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8e3fd8b7481aa94afe68945d98d0cc424cd6efb872e833eaa634de072b8ce920

Aliases

arxiv: 1507.00364 · arxiv_version: 1507.00364v1 · doi: 10.48550/arxiv.1507.00364 · pith_short_12: RY75RN2IDKUU · pith_short_16: RY75RN2IDKUUV7TI · pith_short_8: RY75RN2I

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/RY75RN2IDKUUV7TISROZRUGMIJ \
  | 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: 8e3fd8b7481aa94afe68945d98d0cc424cd6efb872e833eaa634de072b8ce920

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e40550837d52cf9e72c773e2d14a1984ecb33899f935f0708a974f6b70022f1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2015-07-01T20:27:29Z",
    "title_canon_sha256": "4310216d2059699ca50b6dedbd5b7d09b99c5df7d4f059939502fccd7ab25c4e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.00364",
    "kind": "arxiv",
    "version": 1
  }
}