Pith Number

pith:3ZZF2GG2

pith:2011:3ZZF2GG2XEY7LU4XRFCF2UEVQP

not attested not anchored not stored refs pending

The Food Crises: A quantitative model of food prices including speculators and ethanol conversion

Karla Z. Bertrand, Marco Lagi, Yaneer Bar-Yam, Yavni Bar-Yam

arxiv:1109.4859 v1 · 2011-09-21 · q-fin.GN · physics.soc-ph · q-fin.ST

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3ZZF2GG2XEY7LU4XRFCF2UEVQP}

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	2026-05-18T04:12:32.778961Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de725d18dab931f5d39789445d509583c90d022995ee0649dd92ac7d6366f01f

Aliases

arxiv: 1109.4859 · arxiv_version: 1109.4859v1 · doi: 10.48550/arxiv.1109.4859 · pith_short_12: 3ZZF2GG2XEY7 · pith_short_16: 3ZZF2GG2XEY7LU4X · pith_short_8: 3ZZF2GG2

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/3ZZF2GG2XEY7LU4XRFCF2UEVQP \
  | 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: de725d18dab931f5d39789445d509583c90d022995ee0649dd92ac7d6366f01f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a06e2174a1296ed881dcf07d5ae2e1aad60d7cb5e0bcbbb58d9b52b1d2402557",
    "cross_cats_sorted": [
      "physics.soc-ph",
      "q-fin.ST"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-fin.GN",
    "submitted_at": "2011-09-21T19:28:04Z",
    "title_canon_sha256": "e7a1c8bc38462af3477d37666a0f6d43c5bccb96b19495f3c32df1d983dec64d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.4859",
    "kind": "arxiv",
    "version": 1
  }
}