Pith Number

pith:O5TPTV6I

pith:2011:O5TPTV6IGGNOJDEPQEHPDDJCR6

not attested not anchored not stored refs pending

The Food Crises and Political Instability in North Africa and the Middle East

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

arxiv:1108.2455 v1 · 2011-08-11 · physics.soc-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{O5TPTV6IGGNOJDEPQEHPDDJCR6}

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	2026-05-18T04:15:37.668736Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7766f9d7c8319ae48c8f810ef18d228f972f936538c1103da04964763eda5a67

Aliases

arxiv: 1108.2455 · arxiv_version: 1108.2455v1 · doi: 10.48550/arxiv.1108.2455 · pith_short_12: O5TPTV6IGGNO · pith_short_16: O5TPTV6IGGNOJDEP · pith_short_8: O5TPTV6I

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/O5TPTV6IGGNOJDEPQEHPDDJCR6 \
  | 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: 7766f9d7c8319ae48c8f810ef18d228f972f936538c1103da04964763eda5a67

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ecc1890bc57bde7eee6e362ca8a7edf1f552d34f8016ec211fcb6f397b98cb79",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2011-08-11T16:34:49Z",
    "title_canon_sha256": "424898abd413adbcf5c1d336faf4a7f692707e91c4ef349f78033f4b084b3bbb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.2455",
    "kind": "arxiv",
    "version": 1
  }
}