Pith Number

pith:Z7AY2CWW

pith:2011:Z7AY2CWWPUZPEVK4SA4KZC6RRZ

not attested not anchored not stored refs pending

Pricing Weather Derivatives for Extreme Events

Richard L. Smith, Robert J. Erhardt

arxiv:1109.4168 v1 · 2011-09-19 · stat.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Z7AY2CWWPUZPEVK4SA4KZC6RRZ}

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	2026-05-18T04:12:44.071269Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cfc18d0ad67d32f2555c9038ac8bd18e4ca86b9cbfe2239f4eeef168cac22bb9

Aliases

arxiv: 1109.4168 · arxiv_version: 1109.4168v1 · doi: 10.48550/arxiv.1109.4168 · pith_short_12: Z7AY2CWWPUZP · pith_short_16: Z7AY2CWWPUZPEVK4 · pith_short_8: Z7AY2CWW

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/Z7AY2CWWPUZPEVK4SA4KZC6RRZ \
  | 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: cfc18d0ad67d32f2555c9038ac8bd18e4ca86b9cbfe2239f4eeef168cac22bb9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a18b31c61d35c705907331823e9b9b5433db3d5ac4a6b8c8a0643d0f4e0b1bfb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2011-09-19T20:47:16Z",
    "title_canon_sha256": "014475a8e3e006a9b49f9eed96ca3a328803f88bf81c706c08f65aa14553df79"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.4168",
    "kind": "arxiv",
    "version": 1
  }
}