Pith Number

pith:Q4TGMBGM

pith:2012:Q4TGMBGMEWKECHENOSCWSFFD2E

not attested not anchored not stored refs pending

UPDATE February 2012 - The Food Crises: Predictive validation of a quantitative model of food prices including speculators and ethanol conversion

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

arxiv:1203.1313 v2 · 2012-03-06 · physics.soc-ph · q-fin.GN · 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{Q4TGMBGMEWKECHENOSCWSFFD2E}

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	2026-05-18T03:58:50.739373Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87266604cc2594411c8d74856914a3d126a363df27c7325ea053ad648d36c1d9

Aliases

arxiv: 1203.1313 · arxiv_version: 1203.1313v2 · doi: 10.48550/arxiv.1203.1313 · pith_short_12: Q4TGMBGMEWKE · pith_short_16: Q4TGMBGMEWKECHEN · pith_short_8: Q4TGMBGM

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/Q4TGMBGMEWKECHENOSCWSFFD2E \
  | 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: 87266604cc2594411c8d74856914a3d126a363df27c7325ea053ad648d36c1d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "17ccf428053762a6cce01df956393876d6d45d70ddaa44aa934814fdab30afea",
    "cross_cats_sorted": [
      "q-fin.GN",
      "q-fin.ST"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2012-03-06T20:46:52Z",
    "title_canon_sha256": "7d6887aad119b8ecb1266afbaf76514562c2fafd8f5d22885ea81c3000a84cfb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.1313",
    "kind": "arxiv",
    "version": 2
  }
}